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1. Genetic diversity and candidate genes for transient waterlogging tolerance in mungbean at the germination and seedling stages

Author: Khin Lay Kyu, Candy M. Taylor, Colin Andrew Douglas, Al Imran Malik, Timothy David Colmer, Kadambot H. M. Siddique, and William Erskine
Subjects: mungbean mini-core collection, waterlogging, GWAS, tolerance traits, candidate genes, heritability, Plant culture, SB1-1110
Abstract: Mungbean [Vigna radiata var. radiata (L.) Wilczek] production in Asia is detrimentally affected by transient soil waterlogging caused by unseasonal and increasingly frequent extreme precipitation events. While mungbean exhibits sensitivity to waterlogging, there has been insufficient exploration of germplasm for waterlogging tolerance, as well as limited investigation into the genetic basis for tolerance to identify valuable loci. This research investigated the diversity of transient waterlogging tolerance in a mini−core germplasm collection of mungbean and identified candidate genes for adaptive traits of interest using genome−wide association studies (GWAS) at two critical stages of growth: germination and seedling stage (i.e., once the first trifoliate leaf had fully−expanded). In a temperature−controlled glasshouse, 292 genotypes were screened for tolerance after (i) 4 days of waterlogging followed by 7 days of recovery at the germination stage and (ii) 8 days of waterlogging followed by 7 days of recovery at the seedling stage. Tolerance was measured against drained controls. GWAS was conducted using 3,522 high−quality DArTseq−derived SNPs, revealing five significant associations with five phenotypic traits indicating improved tolerance. Waterlogging tolerance was positively correlated with the formation of adventitious roots and higher dry masses. FGGY carbohydrate kinase domain−containing protein was identified as a candidate gene for adventitious rooting and mRNA-uncharacterized LOC111241851, Caffeoyl-CoA O-methyltransferase At4g26220 and MORC family CW-type zinc finger protein 3 and zinc finger protein 2B genes for shoot, root, and total dry matter production. Moderate to high broad−sense heritability was exhibited for all phenotypic traits, including seed emergence (81%), adventitious rooting (56%), shoot dry mass (81%), root dry mass (79%) and SPAD chlorophyll content (70%). The heritability estimates, marker−trait associations, and identification of sources of waterlogging tolerant germplasm from this study demonstrate high potential for marker−assisted selection of tolerance traits to accelerate breeding of climate−resilient mungbean varieties.
Published: 2024
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2. Cassava Witches’ Broom Disease in Southeast Asia: A Review of Its Distribution and Associated Symptoms

Author: Juan M. Pardo, Khonesavanh Chittarath, Pinkham Vongphachanh, Le Thi Hang, Samoul Oeurn, Warren Arinaitwe, Rafael Rodriguez, Sok Sophearith, Al Imran Malik, and Wilmer J. Cuellar
Subjects: cassava witches’ broom disease, phytoplasma, phyllody, diagnostics, Botany, QK1-989
Abstract: Cassava witches’ broom disease (CWBD) is one of the main diseases of cassava in Southeast Asia (SEA). Affected cassava plants show reduced internodal length and proliferation of leaves (phyllody) in the middle and top part of the plant, which results in reduced root yields of 50% or more. It is thought to be caused by phytoplasma; however, despite its widespread distribution in SEA still little is known about CWBD pathology. The overarching goal of this study was to review and corroborate published information on CWBD biology and epidemiology considering recent field observations. We report the following: (1) CWBD symptoms are conserved and persistent in SEA and are distinct from what has been reported as witches’ broom in Argentina and Brazil. (2) In comparison with cassava mosaic disease, another major disease of cassava in SEA, symptoms of CWBD develop later. (3) Phytoplasma detected in CWBD-affected plants belong to different ribosomal groups and there is no association study available indicating phytoplasma as the causing agent of CWBD. These findings are essential clues for designing surveillance and management strategies and for future studies to better understand the biology, tissue localization and spatial spread of CWBD in SEA and other potential risk areas.
Published: 2023
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3. Response of Mungbean (cvs. Celera II-AU and Jade-AU) and Blackgram (cv. Onyx-AU) to Transient Waterlogging

Author: Khin Lay Kyu, Al Imran Malik, Timothy David Colmer, Kadambot H. M. Siddique, and William Erskine
Subjects: mungbean, blackgram, waterlogging, adventitious roots, germination, Plant culture, SB1-1110
Abstract: Mungbean [Vigna radiata (L.) Wilczek] and blackgram [Vigna mungo (L.) Hepper] are important crops for smallholder farmers in tropical and subtropical regions. Production of both crops is affected by unexpected and increasingly frequent extreme precipitation events, which result in transient soil waterlogging. This study aimed to compare the waterlogging tolerance of mungbean and blackgram genotypes under the varying duration of waterlogging stress at germination and seedling stages. We evaluated the responses to different durations of transient waterlogging in a sandy clay loam under temperature-controlled glasshouse conditions. Waterlogging durations were 0, 1, 2, 3, 4, 5, 6, 7, and 8 days during germination and 0, 2, 4, 8, and 16 days during the seedling stage. We used two mungbean genotypes (green testa), Celera II-AU (small-seeded), and Jade-AU (large-seeded), contrasting in seed size and hypocotyl pigmentation, and a blackgram genotype (black testa), Onyx-AU. Waterlogging reduced soil redox potential, delayed or even prevented germination, decreased seedling establishment, and affected shoot and root development. In the seedlings waterlogged (WL) at 15 days after sowing (DAS), adventitious root formation and crown nodulation varied between the genotypes, and 16 days of waterlogging substantially reduced growth but did not result in plant death. Plants in soil with waterlogging for 8–16 days followed by drainage and sampling at 39 DAS had reduced shoot and root dry mass by 60–65% in mungbean and 40% in blackgram compared with continuously drained controls, due at least in part to fewer lateral roots. Soil plant analysis development (SPAD) chlorophyll content was also reduced. Onyx-AU, a blackgram genotype, was more tolerant to transient waterlogging than Jade-AU and Celera II-AU in both growth stages. Of the two mungbean genotypes, Celera II-AU had a greater seedling establishment than Jade-AU post waterlogging imposed at sowing. In contrast, Jade-AU had more plant biomass and greater recovery growth than Celera II-AU after waterlogging and recovery during the seedling stage. Both species were delayed in emergence in response to the shorter periods of transient waterlogging at germination, and with the longer waterlogging germination and emergence failed, whereas at the seedling stage both showed adaptation by the formation of adventitious roots.
Published: 2021
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4. Susceptibility of Cassava Varieties to Disease Caused by Sri Lankan Cassava Mosaic Virus and Impacts on Yield by Use of Asymptomatic and Virus-Free Planting Material

Author: Al Imran Malik, Sok Sophearith, Erik Delaquis, Wilmer J. Cuellar, Jenyfer Jimenez, and Jonathan C. Newby
Subjects: cassava, mosaic disease, virus, yield, Agriculture
Abstract: Cassava (Manihot esculenta Crantz) is a rainfed, smallholder-produced crop in mainland Southeast Asia, and is currently facing a serious challenge posed by the introduction of cassava mosaic disease (CMD). This study assessed the susceptibility of popular Asian varieties to CMD, yield penalties associated with the disease, and the efficacy of selecting clean or asymptomatic plants as seed for the following season. Field experiments evaluated agronomic management practices (i.e., fertilizer application, use of symptomatic and asymptomatic seed stakes) in Cambodia with six to nine popular varieties over three seasons under natural disease pressure. Popular cassava varieties KU50 and Huaybong60 showed superior CMD tolerance, with consistently fewer symptomatic plants, lower disease progress measures, and higher yields. Plants demonstrating symptoms at early stages of development, i.e., 60 days after planting, yielded significantly less than those developing symptoms later (i.e., 270 DAP) or not at all. Plants grown from clean stems yielded on average 20% to 2.7-fold higher than those grown from symptomatic planting material. A yield decline of ~50% was recorded with symptomatic planting materials of susceptible varieties (e.g., SC8, ~25 t ha−1) over successive years. The findings emphasize that farmers could use positive selection by choosing asymptomatic plants to significantly reduce yield losses.
Published: 2022
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5. Combinational Variation Temperature and Soil Water Response of Stomata and Biomass Production in Maize, Millet, Sorghum and Rice

Author: Phanthasin Khanthavong, Shin Yabuta, Al Imran Malik, Md Amzad Hossain, Isao Akagi, and Jun-Ichi Sakagami
Subjects: gs, leaf area, temperature-dependent, transpiration, water stress, water use efficiency, Botany, QK1-989
Abstract: Environmental responses of stomatal conductance (gs) as basic information for a photosynthesis-transpiration-coupled model have been increasing under global warming. This study identified the impact of gs behavior under different soil water statuses and temperatures in rice, maize, millet, and sorghum. The experiments consisted of various soil moisture statuses from flooding to drying and combination of soil moisture status and temperature. There was a reduction in shoot biomass of maize and sorghum caused by decreasing of gs, photosynthesis (A), and transpiration (E) in early imposed waterlogging without dependent temperature, whereas millet and rice were dependent on temperature variation. The effect of gradual soil drying, gs, A, and E of maize, millet, and sorghum were caused by low temperature, except rice. The impact of the combination of various soil water statuses and temperatures on gs is important for the trade-off between A and E, and consequently shoot biomass. However, we discovered that an ability to sustain gs is essential for photo assimilation and maintaining leaf temperature through evapotranspiration for biomass production, a mechanism of crop avoidance in variable soil water status and temperature.
Published: 2022
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6. Waterlogging Tolerance at Germination in Field Pea: Variability, Genetic Control, and Indirect Selection

Author: Md Shahin Uz Zaman, Al Imran Malik, Parwinder Kaur, Federico Martin Ribalta, and William Erskine
Subjects: germination, waterlogging tolerance, indirect selection, secondary traits, Pisum sp., Plant culture, SB1-1110
Abstract: In the Eastern Gangetic Plain of South Asia field pea (Pisum sativum L.) is often grown as a relay crop where soil waterlogging (WL) causes germination failure. To assess if selection for WL tolerance is feasible, we studied the response to WL stress at germination stage in a recombinant inbred line (RIL) population from a bi-parental cross between WL-contrasting parents and in a diversity panel to identify extreme phenotypes, understand the genetics of WL tolerance and find traits for possible use in indirect selection. The RIL population and the diversity panel were screened to test the ability of germination under both waterlogged and drained soils. A total of 50, most WL tolerant and sensitive, genotypes from each of both the RIL and the diversity panel were further evaluated to assay testa integrity/leakage in CaSO4 solution. Morphological characterization of both populations was undertaken. A wide range of variation in the ability to germination in waterlogged soil was observed in the RIL population (6–93%) and the diversity panel (5–100%) with a high broad-sense heritability (H2 > 85%). The variation was continuously distributed indicating polygenic control. Most genotypes with a dark colored testa (90%) were WL tolerant, whereas those with a light colored testa were all WL sensitive in both the RIL population and diversity panel. Testa integrity, measured by electrical conductivity of the leakage solute, was strongly associated with WL tolerance in the RIL population (rG = −1.00) and the diversity panel (rG = −0.90). Therefore, testa integrity can be effectively used in indirect selection for WL tolerance. Response to selection for WL tolerance at germination is confidently predicted enabling the adaptation of the ancient model pea to extreme precipitation events at germination.
Published: 2019
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7. Potassium Fertilisation Is Required to Sustain Cassava Yield and Soil Fertility

Author: Ming Fung Chua, Laothao Youbee, Saythong Oudthachit, Phanthasin Khanthavong, Erik J. Veneklaas, and Al Imran Malik
Subjects: cassava, potassium, soil fertility, nutrition, Agriculture
Abstract: Cassava is often grown in low-fertility soils and has a reputation for having modest nutrient requirements. The storage roots that are harvested, however, contain relatively large amounts of potassium (K). We carried out a field experiment in Laos to determine the growth response to K fertiliser and to examine the field’s K balance over the cropping season. Four different rates of K (0-40-80-120 kg K2O equivalents ha−1) were applied to cassava variety Rayong11. Harvests were done at 8 and 10 months after planting, when the crop was at early and full maturity respectively, to assess if any benefits for productivity or K balance could be achieved by early harvest. We found a positive effect of K fertiliser (up to 39% yield increase compared to no K fertiliser at early harvest, 21% at late harvest) and a positive effect of late harvest (on average a 35% increase compared to early harvest) on cassava root yield. Low-K crops benefited more from a late harvest. At 10 months, the harvested cassava contained 99–142 kg K ha−1, indicating that there was a net removal of K from the fields, even at high K fertilisation levels. This experiment was carried out in comparatively fertile soil with relatively high background K levels, yet, yield benefits of K fertilisation were observed and soil K reserves were depleted by the harvest. It can be concluded that K fertilisation of cassava is advisable for better yields and to avoid progressive depletion of the soil K capital.
Published: 2020
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8. Erratum: Searches for continuous gravitational waves from 15 supernova remnants and fomalhaut b with advanced LIGO (2019, ApJ, 875, 122)*

Author: A. Parida, S. S. Eikenberry, F. Frasconi, Chris A. Collins, R. Flaminio, Marcus E. Lower, Rosa Poggiani, V. Frey, E. K. Wessel, Nikhil Sarin, Odylio D. Aguiar, I. W. Martin, S. Farinon, P. Raffai, Andrew Matas, C. F. Da Silva Costa, M. A. Okada, G. Rutins, Graham Woan, Sebastiano Bernuzzi, D. Passuello, A. Cirone, H. S. Chen, Hyun Lee, J. D. Lough, K. Mason, S. A. Bilgili, E. C. Ferreira, Robert L. Byer, J. Calderón Bustillo, Sanjeev Dhurandhar, O. Halim, N. A. Robertson, Stuart Reid, F. J. Hayes, Patrick Godwin, N. Sennett, P. Kumar, Jacob Scheuer, B. R. Hall, J. Hanks, R. M. Martin, David A. Nichols, Edward K. Porter, J. G. Bartlett, Márton Tápai, K. W. Tsang, C. Horst, W. A. Campbell, Andreas Freise, C. V. Kalaghatgi, M. Rakhmanov, G. Pagano, Paul D. Lasky, J. W. Westhouse, M. C. Araya, Srishti Tiwari, C. Lazzaro, Patricia Schmidt, V. Brisson, Bernard F. Schutz, Li Ju, Matthew Pitkin, D. Cohen, Kiran Prasai, P. J. Veitch, S. A. Usman, C. Messenger, Liam Cunningham, E. A. M. Muniz, Daniel A. Shaddock, P. Gruning, Brittany Kamai, Riccardo Ciolfi, Alberto Vecchio, Geoffrey Mo, J. M. Fishner, Roman Schnabel, J. Hanson, M. Wade, M. Montani, P. Sharma, Héctor Estellés, N. Letendre, F. Ricci, A. Lenon, J. E. Brau, A. A. van Veggel, Richard Gray, Efim A. Khazanov, Peter T. H. Pang, C. Affeldt, G. Ballardin, Moritz Mehmet, A. A. Ciobanu, M. Granata, Minchuan Zhou, F. Marion, P. Brockill, Nancy Aggarwal, Hang Yu, P. G. Murray, Fabien Kéfélian, J. H. Hough, P. W. F. Forsyth, S. R. Thondapu, J. R. Palamos, Michele Zanolin, S. Mukherjee, T. J. Massinger, T. Vo, V. Kalogera, N. Leroy, G. D. Hammond, Javed Rana, H. Fong, G. Greco, M. Haney, T. A. Callister, Alec Mishkin, R. Cavalieri, S. R. P. Mohapatra, G. Giordano, K. Toland, A. K. Srivastava, A. E. Pace, H. Ohta, Vuk Mandic, B. Bécsy, M. Kasprzack, I. Dave, B. D. Lackey, R. L. Ward, Scott Coughlin, A.J. Weinstein, K. H. Lai, M. Phelps, H. S. Cho, L. Kuo, H. Yamamoto, E. Capocasa, M. Chan, S. Walsh, D. J. McManus, A. Schönbeck, B. Rajbhandari, Andrew Mehta, S. D. Linker, R. Robie, M. Fletcher, B. Hughey, R. D. Kennedy, José A. Font, Gregorio Carullo, S. Kumar, J. Prasad, H. K. Gulati, V. Raymond, Steven Bloemen, H. J. Bulten, Shiuh Chao, P. J. Sutton, N. Singh, C. Buy, Samuele Cortese, J. McIver, Vivishek Sudhir, P. A. Altin, A. Basti, N. A. Lockerbie, E. Schreiber, Charalampos Markakis, P. Grassia, Kipp Cannon, M. Steinke, P.H. Nguyen, Ryan N. Lang, Z. Doctor, Alyssa Garcia, J. H. Romie, Carlos O. Lousto, S. Sitmukhambetov, Alejandro Torres-Forné, A. Samajdar, D. M. Wysocki, T. Mistry, Mark A. Scheel, Charlie Hoy, F. Clara, M. A. Aloy, T. M. Evans, C. North, Thomas Dent, P. Corban, P. Ajith, B. Mours, Mandar Patil, Abhirup Ghosh, J. Neilson, Bala R. Iyer, Y. K. Lecoeuche, M. Muratore, Karsten Danzmann, Fabrizio Barone, N. Mukund, P. B. Covas, M. C. Edwards, T. Hinderer, Marta Colleoni, J. A. Giaime, Michael Pürrer, R. Pedurand, Benno Willke, A. Grado, D. C. Vander-Hyde, S. S. Y. Chua, J. Eichholz, J.-P. Coulon, Hua Wang, E. A. Chase, J. Betzwieser, G. Kang, L. R. Cominsky, O. A. Hannuksela, Z. Frei, A. Pal-Singh, S. Caride, Kevin Barkett, N. Bode, S. E. Gossan, Tristan Briant, R. Gustafson, Antoine Heidmann, Rana X. Adhikari, S. McCormick, C. Casentini, Slawomir Gras, D. Töyrä, H. Overmier, S. W. S. Ng, G. Wang, M. C. Heintze, J. S. Areeda, I. Belahcene, B. B. Lane, N. Mazumder, Maher Yazback, F. Donovan, J. Bosveld, N. A. Holland, N. V. Keerthana, M.L. Walker, C. Cahillane, L. Sun, M. C. Milovich-Goff, Dániel Barta, J. D. E. Creighton, V. Gayathri, P. Puppo, J.-D. Fournier, S. J. Kapadia, A. L. Stuver, A. S. Sengupta, H. W. Lee, I. Di Palma, S. T. Countryman, Francesco Pannarale, E. A. Huerta, J. L. Wright, Alessandra Corsi, B. W. Schulte, A. Rocchi, J. P. Zendri, R. Kashyap, Chandra Kant Mishra, R. Bhandare, Sylvain Marsat, Lee McCuller, T. Bulik, T. D. Abbott, O. Puncken, J. M. Gonzalez Castro, Philip F. Hopkins, C. Cocchieri, B. Goncharov, R. Birney, M. Kinley-Hanlon, I. Fiori, Shawn Rosofsky, Jun Liu, S. Raja, S. E. Strigin, D. Sellers, J. Meidam, Jeff R. Powell, Riccardo Sturani, D. Hoak, Stefan L. Danilishin, Patrick Brady, L. Matone, Haocun Yu, M. Landry, R. M. S. Schofield, Surabhi Sachdev, Christopher J. Moore, V. Avendano, R. Mittleman, Nelson Christensen, Geoffrey Lovelace, Soichiro Morisaki, John Worden, P. Couvares, Carl-Johan Haster, O. J. Piccinni, L. Rolland, C. L. Romel, Miriam Cabero, Alessandra Buonanno, L. Wallace, S. Biscoveanu, M. B. Shaner, Benjamin J. Owen, Alexander Urban, Antoni Ramos-Buades, V. V. Frolov, A. Singhal, F. Carbognani, Jordan Camp, R. L. Savage, A. S. Bell, M. Laxen, Anchal Gupta, A. Królak, B. D. Cheeseboro, G. Cerretani, P. J. Easter, J. F. J. van den Brand, M. J. Szczepańczyk, L. Di Fiore, E. Bonilla, S. Sunil, M. Tacca, Jessica Steinlechner, A. Neunzert, P.-F. Cohadon, M. Heurs, Irina Kowalska, E. Katsavounidis, Xiuling Li, C. I. Torrie, Jan Harms, Kazuhiro Agatsuma, Kin Sing Stephen Lee, Frank Ohme, M. Tonelli, R. De Rosa, Kwan-Lok Li, I. Nardecchia, Reed Essick, Martin Hendry, Cecilio García-Quirós, S. Kandhasamy, M. Fishbach, B. Sorazu, Christopher Wipf, Archisman Ghosh, A. P. Lundgren, Gabrielle Allen, E. J. Daw, M. Punturo, F. Garufi, Antonio Marquina, Surendra Nadh Somala, I. Dorrington, Robert J. McCarthy, T. A. Ferreira, R. Frey, Joseph Smith, S. Brunett, J. Zweizig, A. W. Heptonstall, E. L. Merilh, D. Barker, K. D. Giardina, Denis Martynov, Marco Bazzan, C. Ingram, L. Pinard, L. Naticchioni, Salvatore Vitale, R. Kirchhoff, B. L. Pearlstone, N. Man, Antonios Kontos, D. Moffa, J. J. McCann, J.-M. Isac, D. Hofman, Linqing Wen, A. Bisht, A. Kutynia, M. A. Page, Tyson Littenberg, Z. Tornasi, Junwei Cao, Sebastian Steinlechner, T. J. Slaven-Blair, S. ShyamSundar, C. Stachie, Hongyu Shen, O. de Varona, J. B. Kanner, Federico Ferrini, Lijing Shao, G. Vajente, S. M. Gaebel, Christopher P. L. Berry, S. H. Huttner, G. M. Harry, Andrea Chincarini, K. Venkateswara, Yuri Levin, C. Austin, C.D. Booth, M. Barsuglia, S. Appert, A. Giazotto, P. Shawhan, I. Ferrante, T. Z. Summerscales, A. Viceré, T. Huynh-Dinh, Fabio Hernandez, H. Cao, Ashok Kumar, D. J. Vine, W. Katzman, Alena Ananyeva, D. C. Coyne, Stanislav Babak, Rico K. L. Lo, Kendall Ackley, R. K. Nayak, F. Y. Khalili, Ken K. Y. Ng, A. Hreibi, M. Thomas, D. Fiorucci, Manuela Rizzo, H. Radkins, A. Bozzi, A. K. Prajapati, A. R. Wade, M. Agathos, M. Brinkmann, R. Quitzow-James, N. N. Janthalur, B. Sassolas, K. Izumi, L. Xiao, J. S. Lange, H. Y. Chia, M. C. Díaz, W. S. Kim, M. H. Wimmer, K. Haughian, S. Hochheim, M. Yvert, M. Nery, Marc Favata, L. E. Wade, Roger Jones, V. J. Roma, A. P. Spencer, G. Kuehn, C. M. Mow-Lowry, Sergey P. Vyatchanin, Andrew Melatos, M. Lorenzini, A. Masserot, M. Khursheed, Ettore Majorana, Robert Stone, Alessandro Nagar, D. D. Brown, Anthony A. Amato, N. van Bakel, Sebastien Biscans, P. Fulda, P. Charlton, F. Magaña-Sandoval, L. Aiello, M. Gosselin, A. R. Williamson, D. Huet, R. Green, M. Was, M. C. Tringali, A. K. Zadrożny, E. E. Cowan, V. Boschi, L. Zhang, J. H. Klika, M. Bawaj, J. Junker, M. van Beuzekom, K. W. Chung, David Coward, T. Hardwick, D. Steinmeyer, F. Travasso, M. Constancio, A. Allocca, Sascha Husa, G. Venugopalan, D.B. DeBra, Mikhail L. Gorodetsky, C. Whittle, Z. Khan, P. Ehrens, Paul M. Ricker, Y. Setyawati, H. Khan, S. E. Barclay, B. F. Whiting, F. Brighenti, C. Talbot, J. H. Briggs, J. Casanueva Diaz, D. H. Reitze, A. F. Brooks, P. J. Quinonez, V. Kringel, J. L. Willis, Ofek Birnholtz, M. F. Carney, P. Schale, R. Bonnand, Mariana Fazio, H. Vocca, C. Van Den Broeck, E. Sowell, Albrecht Rüdiger, Xing-Jiang Zhu, Jochen Kissel, Felice Sorrentino, V. Srivastava, D. Talukder, Michał Bejger, M. Standke, M. Croquette, David A. Williams, A. Effler, I. W. Harry, D. Mukherjee, Y. R. Chen, J. Jiang, Alessandro Bertolini, M. Fays, D. Moraru, J. C. Driggers, Matthew Evans, M. Bitossi, G. Bergmann, K. Wette, M. M. Hanke, Leo Singer, E. Cesarini, M. Hulko, T. D. Creighton, Eugeniy E. Mikhailov, Jörg Hennig, Eric Howell, A. Strunk, G. Vedovato, L. E. H. Datrier, D. B. Kozak, D. Stocks, C. Vorvick, P. Thomas, M. Arène, S. B. Anderson, Tim Dietrich, A. Perreca, G. Gemme, A. Di Lieto, R. A. Eisenstein, S. J. Chamberlin, Jishnu Suresh, G. D. Meadors, Z. A. Warden, R. Gouaty, T. Zelenova, Riccardo Bassiri, John J. Oh, M. Vasúth, Jonathan Cripe, N. Kijbunchoo, E. Cuoco, Sheelu Abraham, K. Kawabe, S. M. Aston, Michael W. Coughlin, G. D. O'Dea, Bruno Giacomazzo, Giuseppe Intini, M. Drago, Guenakh Mitselmakher, B. A. Boom, A. M. Sergeev, T. Etzel, J.-G. Ducoin, M. Eisenmann, A. Dmitriev, S. Leavey, Hai-Ping Cheng, A. Iess, L. K. Nuttall, D. Wilken, S. Katsanevas, R. Goetz, C. Adams, R. M. Blair, D. Sigg, S. W. Ballmer, D. M. Shoemaker, Binlei Ding, V. Bossilkov, Lindsay DeMarchi, I. Khan, K. Siellez, D. Sentenac, R. Macas, G. Billingsley, S. Macfoy, Sergio Gaudio, D. B. Tanner, A. Trovato, Olivier Minazzoli, Magnus Manske, M. Razzano, C. C. Yancey, F. Vetrano, Zachariah B. Etienne, Jennifer Watchi, E. Maros, R. C. Walet, V. P. Mitrofanov, R. Colgan, C. S. Unnikrishnan, G. Moreno, V. Kondrashov, P. Leaci, S. Meshkov, Seog Oh, S. P. Stevenson, Achamveedu Gopakumar, R. Inta, C. J. Richardson, S. Klimenko, M. J. Yap, C. Palomba, W. G. Anderson, G. Cella, F.L. Linde, P. Booker, L. Milano, S. C. Tait, N. V. Krishnendu, A. Pasqualetti, W. Del Pozzo, W. M. Farr, A. C. Green, Fausto Acernese, M. Korobko, B. C. Pant, C. Messick, J. Derby, J. Healy, K. A. Thorne, A. Cumming, M. Denys, M. Tse, S. Ascenzi, S. E. Dwyer, R. M. Magee, David Keitel, V. Germain, S. J. Cooper, Giacomo Ciani, K. Rao, Yongjung Kim, Peter Weßels, I. A. Bilenko, L. Haegel, David J. Ottaway, B. P. Abbott, H. Vahlbruch, J. C. Mills, E. K. Gustafson, K. Riles, J. Y. Vinet, H. Middleton, S. Doravari, H. Heitmann, Piotr Jaranowski, M. S. Shahriar, P. Ruggi, M. Weinert, H. A. G. Gabbard, D. M. Macleod, Karan Jani, B. L. Swinkels, Arunava Mukherjee, S. Privitera, L. Glover, Imre Bartos, Isabel Cordero-Carrión, H. Qi, E. Genin, J. Zhang, F. Baldaccini, B. U. Gadre, A. Lartaux-Vollard, B. Irwin, R. Shink, L. Rei, Huang-Wei Pan, Gijs Nelemans, S. Vass, Kenneth A. Strain, Jimin George, R. Coyne, C. Gray, G. H. Ogin, T. J. Shaffer, M. Sieniawska, Fabrice Matichard, A. Paoli, K. A. Santiago, F. Fidecaro, G. M. Guidi, G. Cagnoli, Arnold Miller, H. N. Isa, Suvadeep Bose, V. Tiwari, V. Quetschke, Yann Bouffanais, Martin M. Fejer, L. F. Ortega, D. Lumaca, M. Pedraza, R. Bork, S. Ghonge, Y. Minenkov, P. Bacon, K. AultONeal, K. Chakravarti, E. D. Hall, L. Sammut, Lionel London, D. George, R. K. Lanza, Y. Boetzel, Alexander C. Jenkins, P. Dupej, Eric B. Flynn, Z. Márka, M. Mantovani, T. Prestegard, D. W. Yeeles, Xie Chen, A. Markowitz, Fabio Marchesoni, P. Hello, Samuel Deléglise, M. Merzougui, A. Fernandez-Galiana, S. M. Scott, M. Obergaulinger, Turlough P. Downes, F. Cavalier, A. Ain, R. J. Trudeau, K. Holt, Chunglee Kim, L. van der Schaaf, S. A. Pai, C. De Rossi, W. Parker, A. Gennai, Rahul Kumar, Harald P. Pfeiffer, Milan Gupta, G. Dálya, B. Gateley, G. Cho, J. C. Bayley, Aaron Buikema, V. Sandberg, E. J. King, M. J. Cowart, S. Koley, M. Boer, G. Mendell, S. J. Jadhav, B. Idzkowski, V. Loriette, V. Skliris, J. K. Blackburn, E. Chassande-Mottin, Shubhanshu Tiwari, G. Koekoek, L. Trozzo, C. Pankow, P. M. Meyers, Koh Ueno, Christian Pedersen, Albert Lazzarini, Kyungmin Kim, N. Koper, H. Wittel, M. Deenadayalan, B. O'Reilly, A. W. Jones, Sheila Rowan, S. G. Schwalbe, D. Pascucci, R. De Pietri, S. Mitra, T. Sadecki, W. Ren, Rocco Romano, John D. Scott, J. Z. Wang, S. Grunewald, R. Prasanna, R. Cotesta, R. G. Ormiston, S. Kaufer, Rainer Weiss, David E. McClelland, Paul J. Groot, M. Zevin, R. A. Mercer, S. Ossokine, Jinsook Kim, Rebecca Fisher, J. Li, A. M. Holgado, H. Fair, Samaya Nissanke, X. Liu, M. A. Bizouard, K. Bossie, John Veitch, J. Lehmann, Al Imran Malik, K. G. Arun, J. D. Tasson, C. K. Cheong, J. R. Gair, M. Fitz-Axen, B. K. Berger, S. D'Antonio, N. Arnaud, K. E. Ramirez, W. Z. Korth, Daniel E. Holz, F. Di Renzo, Torrey Cullen, B. J. J. Slagmolen, Archana Pai, F. Paoletti, Vijay Varma, M. MacInnis, Marco Romanelli, M. Fyffe, F. Cipriano, David Blair, C. Fee, Gabriela Gonzalez, F. Aubin, G. Stratta, Jesper Munch, K. R. Corley, A. Mullavey, T. J. N. Nelson, J. Birch, S. Bae, P. Rapagnani, F. J. Raab, D. Tuyenbayev, B. Patricelli, D. S. Wu, Margaret Millhouse, S. Barnum, D. Buskulic, S. G. Gaonkar, E. Coccia, M. E. Zucker, C. Graef, B. A. Weaver, Xiaohui Fan, J. G. Rollins, Richard O'Shaughnessy, B. Barr, M. De Laurentis, D. Ugolini, P. Clearwater, G. Valdes, David Jones, M. R. Ganija, L.-W. Wei, Haixing Miao, G. Bogaert, R. Taylor, P. Popolizio, Koji Arai, Ryan Lynch, A. D. Viets, D. Meacher, E. J. Fauchon-Jones, E. J. Sanchez, S. Ponrathnam, G. A. Prodi, K. L. Dooley, Fangchen Feng, Lisa Barsotti, Kris Ryan, E. A. Quintero, Marco Cavaglia, J.J. Bero, Leo Tsukada, David H. Shoemaker, M. Lormand, D. J. Stops, S. Karki, Anirban Dasgupta, E. Z. Hamilton, R. J. G. Jonker, J. S. H. Lee, T. Dal Canton, J. Warner, R. Passaquieti, D. Verkindt, Mairi Sakellariadou, G. Pillant, S. H. R. Yuen, Keith Rose, K. S. Karvinen, F. Martelli, C. Rajan, Pablo Cerdá-Durán, Peter R. Saulson, V. Sequino, Tenglin Li, R. DeSalvo, D. Estevez, B. Pang, Paul T. Baker, O. V. Palashov, Sean T. McWilliams, D. Rosińska, J. C. Barayoga, V. Fafone, R. Tso, Jonathan Richardson, F. Piergiovanni, Chang-Hwan Lee, N. Sanchis-Gual, N. Radulescu, L. Mereni, Terry G. McRae, S. Mastrogiovanni, Richard J. Abbott, L. G. Prokhorov, Patrick M. Koch, S. Antier, S. Banagiri, A. Grant, D. Chatterjee, T. L. Lam, A. Pele, A. Chiummo, Nergis Mavalvala, Alessandro Longo, Richard J. Oram, M. Davier, Jerome Degallaix, François Bondu, F. Badaracco, Sebastian Khan, B. C. Barish, Hartmut Grote, R. J. E. Smith, John A. Clark, Ben Farr, Christophe Collette, Ho-Gyu Lee, G. Losurdo, Luca Gammaitoni, R. Metzdorff, C. J. Perez, B. D. O'Brien, M. K. M. Bader, O. Chaibi, Devon S. Johnson, C. Bradaschia, P. Oppermann, Neil J. Cornish, S. Frasca, M. Di Giovanni, Ik Siong Heng, Kai Staats, F-L. Lin, L. Conti, M. Chaturvedi, S. Márka, Stephen Fairhurst, Carl Blair, Peter Aufmuth, T. Di Girolamo, V. Mangano, A. L. Miller, S. Ghosh, László Á. Gergely, A. Macquet, P. Astone, B. Lantz, Daichi Tsuna, K. Mogushi, P. J. King, J. T. Whelan, S. G. Crowder, J. Feicht, Joey Shapiro Key, J. R. Sanders, António Alves da Silva, Q. Chu, S. V. Angelova, L. Magaña Zertuche, Lili Yang, Laura Cadonati, D. A. Steer, M. Branchesi, Zefeng Zhou, D. Y. T. Pong, L. Kleybolte, E. Massera, F. Wellmann, Edward Seidel, O. E. S. Sauter, J. Woehler, S. Chung, K. S. Phukon, A. Avila-Alvarez, Chad Hanna, A. Bramley, C. Kimball, J. Oberling, M. Pirello, K. Gill, Walter Winkler, A. S. Markosyan, Harald Lück, J. Bidler, M. Cho, G. Gaur, S. C. McGuire, J. F. Read, F. Nocera, C. Zhao, Alicia M. Sintes, S. Di Pace, K. Haris, T. Zhang, N. Demos, Thibaut Jacqmin, T. Regimbau, I. Maksimovic, G. Hemming, S. M. Koehlenbeck, M. Saleem, M. Oliver, Douglas Davis, Geraint Pratten, E. Goetz, Tarun Souradeep, Andrea Taracchini, D. Bersanetti, G. Ashton, S. Penn, J. V. van Heijningen, Yu Wang, F. Thies, G. L. Mansell, V. Dattilo, Edwin J. Son, Eric Thrane, Stefan Hild, Y. Ma, A. Brillet, C. Michel, M. Vardaro, Sarah Caudill, T. D. Knowles, F. Robinet, V. B. Adya, J. K. Wofford, F. Cleva, M. P. Ross, T. B. Edo, M. Pichot, Maximiliano Isi, E. M. Gretarsson, Ying Guo, D. Beniwal, Peter Fritschel, Wenxiao Wang, M. Masso-Reid, S. Kwang, L. E. Sanchez, Enrico Calloni, G. Traylor, Thomas Corbitt, L. Salconi, C. A. Costa, Zhihui Du, Laboratoire des matériaux avancés (LMA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), (Astro)-Particles Physics, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)
Subjects: Physics, [PHYS]Physics [physics], 010504 meteorology & atmospheric sciences, Gravitational wave, Astronomy, Astronomy and Astrophysics, 01 natural sciences, LIGO, Supernova, Fomalhaut, Space and Planetary Science, 0103 physical sciences, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences
Abstract: Equation (5) of the published article?(Abbott et al. 2019) is in error; it should read (Formula Presented) The upper limits on ò presented in the published article are unaffected by this error.
Published: 2021

9. Waterlogging tolerance of grass pea (Lathyrus sativus L.) at germination related to country of origin

Author: Al Imran Malik, William Erskine, Edi Wiraguna, and Timothy D. Colmer
Subjects: 0106 biological sciences, biology, Ecotype, food and beverages, 04 agricultural and veterinary sciences, biology.organism_classification, Sorghum, 01 natural sciences, Crop, Agronomy, Seedling, Germination, 040103 agronomy & agriculture, Lathyrus, 0401 agriculture, forestry, and fisheries, Drainage, Agronomy and Crop Science, 010606 plant biology & botany, Waterlogging (agriculture)
Abstract: Grass pea (Lathyrus sativus L.) has a Mediterranean origin and was spread to Western Europe, Africa and South Asia. Over time, this grain legume crop has become important in South Asia, where it is often affected by waterlogging at germination. Therefore, varieties with waterlogging tolerance of seeds at germination are needed. This study evaluated waterlogging tolerance in a grass pea diversity panel. First, morpho-agronomic traits of 53 grass pea genotypes from 7 diverse countries (Afghanistan, Australia, Bangladesh, Cyprus, Ethiopia, Greece and Pakistan) were measured in a glasshouse. Seeds of the collection were then sown into waterlogged soil for 6 days and is subsequently drained for 8 days. Finally, representative genotypes from each country of origin of the three survival patterns (described below) were then tested to identify the effect of seed priming on germination and seedling growth in waterlogged soil. Canonical analysis of six traits (seed weight, pod length, pod width, flowering time, time to maturity and seedling survival) showed that genotypes from Bangladesh and Ethiopia were similar. There was a significant variation amongst genotypes in waterlogging tolerance. Genotypes from Bangladesh and Ethiopia showed the highest percent seedling survival (54% and 47%), with an ability to germinate under waterlogging and then maintain growth from the first day of draining to the final sampling (Pattern 1). In contrast, genotypes from other origins either germinated during waterlogging, but did not survive during drainage (Pattern 2) or failed to germinate and had low seedling survival during waterlogging and drainage (Pattern 3). Priming seeds reduced seedling survival in grass pea. Despite Mediterranean origin, specific ecotypes of grass pea with greater waterlogging tolerance under warm wet conditions have been favoured in Bangladesh and Ethiopia where adaptation to extreme precipitation events at germination and seedling survival upon soil drainage is critical for successful crops.
Published: 2020

10. Rice acclimation to soil flooding: Low concentrations of organic acids can trigger a barrier to radial oxygen loss in roots

Author: Timothy D. Colmer, Hirokazu Takahashi, Mikio Nakazono, Dennis Konnerup, Ole Pedersen, Lukasz Kotula, and Al Imran Malik
Subjects: 0106 biological sciences, 0301 basic medicine, root internal aeration, Physiology, Acclimatization, Cell Respiration, soil phytotoxins, lignin, Oryza sativa, Plant Science, Genes, Plant, Lignin, Plant Roots, 01 natural sciences, Aerenchyma, Butyric acid, Soil, 03 medical and health sciences, chemistry.chemical_compound, suberin, Gene Expression Regulation, Plant, Suberin, Respiration, Food science, Organic Chemicals, transcripts, soil waterlogging, chemistry.chemical_classification, Hexanoic acid, ROL, root respiration, Water, Plant physiology, Oryza, Lipids, Floods, Oxygen, 030104 developmental biology, chemistry, aerenchyma, Phytotoxicity, 010606 plant biology & botany, Organic acid
Abstract: Waterlogged soils contain monocarboxylic acids produced by anaerobic microorganisms. These “organic acids” can accumulate to phytotoxic levels and promote development of a barrier to radial O2 loss (ROL) in roots of some wetland species. Environmental cues triggering root ROL barrier induction, a feature that together with tissue gas-filled porosity facilitates internal aeration, are important to elucidate for knowledge of plant stress physiology. We tested the hypothesis that comparatively low, non-toxic, concentrations of acetic, propionic, butyric, and/or hexanoic acids might induce root ROL barrier formation in rice. Each organic acid, individually, triggered the ROL barrier in roots but with no effect (acetic or butyric acids) or with only slight effects (propionic or hexanoic acids) on root extension. Transcripts of four genes related to suberin biosynthesis were increased by some of the organic acid treatments. Respiration in root tissues was not, or moderately, inhibited. Beyond a narrow concentration range, however, respiration declined exponentially and the order (least to greatest) for EC50 (effective concentration for 50% inhibition) was butyric, propionic, acetic, then hexanoic acid. An understanding of the environmental cue for root ROL barrier induction should enhance future work to elucidate the molecular regulation of this root trait contributing to plant flooding tolerance.
Published: 2019

11. Erratum: Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model [Phys. Rev. D 100, 122002 (2019)]

Author: S. J. Jadhav, Samuele Cortese, Charlie Hoy, V. Srivastava, M. Fays, Rebecca Fisher, J. Li, Chris A. Collins, T. Hinderer, A. Di Lieto, Rana X. Adhikari, Al Imran Malik, S. J. Chamberlin, M. Vasúth, Nikhil Sarin, Jonathan Cripe, M. Fyffe, Gabriela Gonzalez, K. R. Corley, F. Donovan, C. F. Da Silva Costa, V. Bossilkov, D. Lumaca, M. A. Okada, K. Mason, S. A. Bilgili, J. D. E. Creighton, Soichiro Morisaki, Jun Liu, E. C. Ferreira, Sanjeev Dhurandhar, D. B. Tanner, Sebastiano Bernuzzi, O. Halim, K. W. Tsang, W. Katzman, M. Yvert, R. M. S. Schofield, M. Nery, L. Naticchioni, R. M. Martin, David A. Nichols, M. Korobko, P. J. Veitch, W. A. Campbell, Ettore Majorana, Benjamin J. Owen, J. F. J. van den Brand, J. Junker, S. Sunil, M. Tacca, S. Hochheim, Martin Hendry, Cecilio García-Quirós, P. Ehrens, Paul M. Ricker, H. Khan, T. Prestegard, G. Cho, H. Fong, G. Greco, M. Bitossi, G. Bergmann, P. A. Altin, Antonios Kontos, S. Walsh, J. G. Bartlett, Márton Tápai, P.H. Nguyen, Junwei Cao, Y. Boetzel, A. Samajdar, K. Wette, F. Thies, John J. Oh, E. A. M. Muniz, Riccardo Ciolfi, Peter T. H. Pang, B. W. Schulte, L. Xiao, F. Ricci, C. Affeldt, R. Goetz, D. C. Vander-Hyde, C. Adams, A. A. Ciobanu, B. Mours, Mandar Patil, Abhirup Ghosh, Liam Cunningham, Archana Pai, F. Paoletti, Z. B. Etienne, Tristan Briant, P. Ruggi, P. Fulda, S. H. Huttner, A. Mullavey, T. J. N. Nelson, Peter Aufmuth, Gregorio Carullo, R. M. Blair, D. Sigg, T. Di Girolamo, S. W. Ballmer, D. M. Shoemaker, Hua Wang, L. Sun, S. R. P. Mohapatra, J. D. Lough, G. Giordano, K. Toland, D. J. Hofman, M. Punturo, Slawomir Gras, S. W. S. Ng, G. Moreno, S. Kumar, C. Buy, Callum Dale Booth, A. M. Sintes, Andrew Melatos, M. Lorenzini, A. Masserot, S. E. Barclay, J. L. Willis, J. McIver, J. H. Briggs, Mark Hannam, Ofek Birnholtz, S. Ghosh, László Á. Gergely, D. M. Wysocki, A. Macquet, B. Lantz, Daichi Tsuna, R. D. Kennedy, José A. Font, N. Singh, Eric Howell, S. Leavey, Chandra Kant Mishra, R. Bhandare, Piotr Jaranowski, K. Mogushi, N. Bode, D. George, Dániel Barta, R. K. Lanza, P. Dupej, Eric B. Flynn, B. Gateley, Aaron Buikema, R. W. L. Jones, C. C. Wipf, E. J. King, A. Strunk, N. Kijbunchoo, Sheelu Abraham, M. J. Cowart, Hai-Ping Cheng, A. Iess, L. K. Nuttall, S. T. Countryman, Surabhi Sachdev, Christopher J. Moore, S. Biscoveanu, Antoni Ramos-Buades, V. V. Frolov, S. Mitra, Xiaohui Fan, Richard O'Shaughnessy, B. Barr, A. D. Viets, D. Meacher, D. Tuyenbayev, Kevin Barkett, I. Dorrington, I. Di Palma, R. Kirchhoff, B. L. Pearlstone, Kendall Ackley, R. K. Nayak, H. Y. Chia, F. Magaña-Sandoval, A. Allocca, M. F. Carney, Ajay Kumar, Jörg Hennig, Charalampos Markakis, R. Pedurand, Benno Willke, A. Grado, T. Sadecki, W. Ren, S. Grunewald, R. Prasanna, R. L. Ward, P. J. Sutton, Alyssa Garcia, J. H. Romie, P. J. King, J. T. Whelan, K. H. Lai, S. G. Crowder, J. Feicht, Joey Shapiro Key, J. R. Sanders, M. Bawaj, M. M. Hanke, S. B. Anderson, M. R. Ganija, S. Ponrathnam, S. Karki, D. Verkindt, O. Puncken, M. B. Shaner, S. B. Coughlin, A. Neunzert, P.-F. Cohadon, M. Heurs, Reed Essick, Kazuhiro Agatsuma, F. Frasconi, T. Hardwick, D. Steinmeyer, F. Travasso, Michał Bejger, M. Standke, M. Croquette, A. Effler, J. Jiang, A. Perreca, G. Gemme, M. Drago, Guenakh Mitselmakher, Zhihui Du, A. Parida, S. S. Eikenberry, K. E. Ramirez, S. Barnum, Ryan Lynch, D. C. Williams, Sung-Po Chao, R. De Rosa, Kwan-Lok Li, D. Passuello, I. Nardecchia, A. Cirone, Hiroyuki Ohta, Robert J. McCarthy, Tim Dietrich, Jennifer Watchi, Sergio Gaudio, C. J. Richardson, J. Healy, V. Kringel, A. M. Holgado, R. Macas, G. Billingsley, S. Macfoy, N. Mukund, L. R. Cominsky, R. Gustafson, Linqing Wen, R. Flaminio, B. A. Boom, A. M. Sergeev, B. Pang, Z. Tornasi, P. Kumar, S. Kandhasamy, M. Fishbach, B. Sorazu, A. Kutynia, Paul T. Baker, A. K. Lenon, S. Mastrogiovanni, M. Pedraza, F. Cavalier, M. Fitz-Axen, Marcus E. Lower, J. S. Kissel, Hartmut Grote, S. Doravari, A. Singhal, Alena Ananyeva, Odylio D. Aguiar, I. W. Martin, Andrea Chincarini, A. K. Zadrożny, T. Z. Summerscales, Leo Tsukada, E. Z. Hamilton, S. A. Usman, Roman Schnabel, J. E. Brau, V. Boschi, M. van Beuzekom, R. Tso, Jonathan Richardson, L. Mereni, G. Losurdo, R. Metzdorff, M. C. Milovich-Goff, J. L. Wright, Patrick M. Koch, S. Antier, S. Banagiri, Alessandra Corsi, S. Raja, S. E. Strigin, H. S. Chen, S. Husa, S. Bose, J. Zweizig, V. Germain, J. Steinlechner, C. Cahillane, V. Gayathri, H. Fair, D. H. Shoemaker, P. Brockill, R. L. Savage, A. S. Bell, Hyun Lee, J. Calderón Bustillo, Edward K. Porter, C. Messenger, M. J. Yap, C. Palomba, S. Ascenzi, S. Privitera, M. S. Shahriar, Lee McCuller, T. Bulik, T. D. Abbott, G. Cagnoli, Devon S. Johnson, C. Horst, Alberto Vecchio, Geoffrey Mo, J. M. Fishner, M. Montani, H. J. Bulten, Geoffrey Lovelace, T. Mistry, G. Rutins, Graham Woan, M. H. Wimmer, M. Constancio, D. Rosińska, A. A. van Veggel, Richard Gray, Efim A. Khazanov, G. Ballardin, Moritz Mehmet, Kiran Prasai, Alessandra Buonanno, C.-J. Haster, Gabrielle Allen, J.-M. Isac, F. Marion, N. Leroy, Nancy Aggarwal, Zahoor Ali Khan, M. Phelps, S. Babak, Alexander C. Jenkins, Xie Chen, A. Markowitz, S. Vitale, G. Dálya, M. Laxen, Anchal Gupta, F. Y. Khalili, Robert L. Byer, Stuart Reid, F. J. Hayes, Jacob Scheuer, B. Bécsy, M. Kasprzack, Bala R. Iyer, S. S. Y. Chua, S. McCormick, C. Casentini, G. Wang, L. Matone, Vuk Mandic, Neil J. Cornish, M. J. Szczepańczyk, Denis Martynov, Marco Bazzan, F-L. Lin, D. J. McManus, C. Ingram, L. Pinard, B. R. Hall, Héctor Estellés, N. Letendre, Alec Mishkin, R. Cavalieri, I. Dave, C. Talbot, E. J. Daw, Maurizio Canepa, Antonio Marquina, Rosa Poggiani, V. Frey, A. K. Mehta, E. K. Wessel, S. Farinon, P. Raffai, T. L. Lam, Alessandro Longo, Richard J. Oram, François Bondu, F. Badaracco, Daniel E. Holz, B. J. J. Slagmolen, B. Patricelli, D. S. Wu, Margaret Millhouse, N. Sennett, Patrick Godwin, K. L. Dooley, Marta Colleoni, J. A. 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Katsanevas, I. Fiori, T. A. Ferreira, K. D. Giardina, J. K. Wofford, P. Leaci, P. Booker, K. W. Chung, S. Kaufer, Shawn Rosofsky, Haocun Yu, Archisman Ghosh, A. P. Lundgren, M. A. Page, Hongyu Shen, D. C. Coyne, K. Izumi, E. Cesarini, S. D. Linker, R. Robie, Mark A. Scheel, M. Fletcher, B. Hughey, Albert Lazzarini, S. G. Gaonkar, Jimin George, M. Sieniawska, K. Chakravarti, Fabio Marchesoni, P. Hello, Haixing Miao, Y. R. Chen, Samaya Nissanke, M. A. Bizouard, B. K. Berger, Ken K. Y. Ng, A. Hreibi, F. Clara, Alessandro Bertolini, Achamveedu Gopakumar, S. L. Danilishin, G. Bogaert, J. J. Bero, Manuela Rizzo, R. Taylor, Daniel A. Shaddock, Brittany Kamai, Rainer Weiss, G. Venugopalan, J. C. Driggers, D.B. DeBra, C. V. Kalaghatgi, J. Hanson, C. Whittle, Kyungmin Kim, B. O'Reilly, P. Gruning, K. Siellez, B. F. Schutz, N. V. Krishnendu, J. Derby, K. A. Thorne, M. Was, Isabel Cordero-Carrión, J. S. Lange, B. Irwin, M. C. Tringali, A. C. Green, Andrew Matas, J. Hanks, Fausto Acernese, C. Gray, G. H. Ogin, T. J. Shaffer, A. Ain, C. Fee, R. J. Trudeau, J. Birch, S. Bae, E. Coccia, C. S. Unnikrishnan, B. U. Gadre, W. M. Farr, B. C. Pant, J.-G. Ducoin, M. Eisenmann, R. C. Walet, Fangchen Feng, S. E. Gossan, M. Boer, Shubhanshu Tiwari, M. E. Zucker, C. Graef, B. A. Weaver, J. G. Rollins, Lindsay DeMarchi, L.-W. Wei, V. P. Mitrofanov, Lisa Barsotti, Anirban Dasgupta, L. Milano, W. Del Pozzo, Hang Yu, R. J. G. Jonker, H. Heitmann, M. A. Aloy, J. S. Areeda, K. A. Santiago, A. Gennai, Rahul Kumar, Harald P. Pfeiffer, Kris Ryan, E. A. Quintero, I. Belahcene, John Worden, A. S. Sengupta, H. W. Lee, P. Couvares, H. Vocca, Eugeniy E. Mikhailov, G. Vedovato, L. E. H. Datrier, D. B. Kozak, C. Messick, Imre Bartos, D. Stocks, M. Mantovani, Francesco Pannarale, C. Vorvick, L. Sammut, David Blair, S. Koley, Jan Harms, David E. McClelland, Lionel London, B. Idzkowski, V. Loriette, V. Skliris, G. Kang, A. Pal-Singh, A. Rocchi, B. B. Lane, C. Cocchieri, M. Khursheed, N. V. Keerthana, M.L. 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Subjects: Physics, data analysis method, erratum, 010308 nuclear & particles physics, Gravitational wave, Scorpius X-1, LIGO, gravitational radiation, gravitational radiation: direct detection, 01 natural sciences, gravitational radiation detector, Theoretical physics, cosmic rays, binary: spin, gravitational radiation: emission, 0103 physical sciences, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Experiments in gravity, X-ray: binary, Hidden Markov model, numerical calculations, 010303 astronomy & astrophysics, cosmology
Abstract: International audience; We present results from a semicoherent search for continuous gravitational waves from the low-mass x-ray binary Scorpius X-1, using a hidden Markov model (HMM) to track spin wandering. This search improves on previous HMM-based searches of LIGO data by using an improved frequency domain matched filter, the J-statistic, and by analyzing data from Advanced LIGO’s second observing run. In the frequency range searched, from 60 to 650 Hz, we find no evidence of gravitational radiation. At 194.6 Hz, the most sensitive search frequency, we report an upper limit on gravitational wave strain (at 95% confidence) of h095%=3.47×10-25 when marginalizing over source inclination angle. This is the most sensitive search for Scorpius X-1, to date, that is specifically designed to be robust in the presence of spin wandering.
Published: 2021

12. Potassium Fertilisation Is Required to Sustain Cassava Yield and Soil Fertility

Author: Erik J. Veneklaas, Laothao Youbee, Phanthasin Khanthavong, Al Imran Malik, Saythong Oudthachit, and Ming Fung Chua
Subjects: 0106 biological sciences, Field experiment, Potassium, potassium, soil fertility, lcsh:S, chemistry.chemical_element, Sowing, 04 agricultural and veterinary sciences, Biology, 01 natural sciences, cassava, lcsh:Agriculture, Crop, Nutrient, nutrition, chemistry, Agronomy, Yield (wine), Soil water, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Soil fertility, Agronomy and Crop Science, 010606 plant biology & botany
Abstract: Cassava is often grown in low-fertility soils and has a reputation for having modest nutrient requirements. The storage roots that are harvested, however, contain relatively large amounts of potassium (K). We carried out a field experiment in Laos to determine the growth response to K fertiliser and to examine the field&rsquo, s K balance over the cropping season. Four different rates of K (0-40-80-120 kg K2O equivalents ha&minus, 1) were applied to cassava variety Rayong11. Harvests were done at 8 and 10 months after planting, when the crop was at early and full maturity respectively, to assess if any benefits for productivity or K balance could be achieved by early harvest. We found a positive effect of K fertiliser (up to 39% yield increase compared to no K fertiliser at early harvest, 21% at late harvest) and a positive effect of late harvest (on average a 35% increase compared to early harvest) on cassava root yield. Low-K crops benefited more from a late harvest. At 10 months, the harvested cassava contained 99&ndash, 142 kg K ha&minus, 1, indicating that there was a net removal of K from the fields, even at high K fertilisation levels. This experiment was carried out in comparatively fertile soil with relatively high background K levels, yet, yield benefits of K fertilisation were observed and soil K reserves were depleted by the harvest. It can be concluded that K fertilisation of cassava is advisable for better yields and to avoid progressive depletion of the soil K capital.
Published: 2020
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13. GW190521: A Binary Black Hole Merger with a Total Mass of 150 M⊙

Author: Will M. Farr, L. Xiao, A. M. Holgado, K. G. Arun, M. Montani, Nancy Aggarwal, Zahoor Ali Khan, Roman Schnabel, H. L. Griggs, J. E. Brau, A. A. van Veggel, Efim A. Khazanov, G. Ballardin, P. Fulda, J. Smetana, R. Kirchhoff, B. L. Pearlstone, S. P. Jadhav, Patrick Das Gupta, S. G. Crowder, J. Bosveld, V. Fafone, J. L. Willis, M. Eisenmann, Ofek Birnholtz, Sebastiano Bernuzzi, Simone Mozzon, I. Dave, B. Hughey, O. Halim, Laura Cadonati, Carl-Johan Haster, Kendall Ackley, R. K. Nayak, S. D. Linker, K. W. Tsang, L. Rolland, H. Y. Chia, Mark A. Scheel, R. S. Bankar, M. C. Milovich-Goff, L. Kleybolte, Gianluca Grignani, Fabrizio Barone, A. Allocca, M. F. Carney, M. Rakhmanov, M. Kasprzack, K. Rose, S. Leavey, Hai-Ping Cheng, A. Iess, J. L. Wright, N. Man, Ajay Kumar, F. Clara, Alessandra Corsi, C. Whittle, D. Laghi, Daniel R. George, K. Haughian, M. Boer, J. B. Kanner, M. Mondin, S. E. Gossan, S. Gaudio, L. K. Nuttall, R. Macas, G. Billingsley, S. Macfoy, Azadeh Keivani, A. R. Guimaraes, Susan M. Scott, V. B. Adya, J. S. Areeda, G. R. Johns, H. Fong, G. Greco, E. J. Daw, Maurizio Canepa, P. H. Nguyen, Moritz Mehmet, C. Darsow-Fromm, B. B. Lane, M. Vardaro, S. Mastrogiovanni, Chad Hanna, A. Bramley, Antonio Marquina, Eric Hennes, A. S. Ubhi, T. A. Ferreira, P. Kumar, Héctor Estellés, C. Kimball, J. Oberling, M. Pirello, Charalampos Markakis, Y. K. Lecoeuche, G. M. Harry, K. Venkateswara, R. Cotesta, A. Cumming, F. Di Renzo, E. Genin, T. R. Saravanan, J. Zhang, F. Baldaccini, L. F. Ortega, R. Cummings, D. W. Yeeles, Felice Sorrentino, D. Moraru, K. D. Giardina, E. M. Santos, J. K. Wofford, M. A. Page, P. W. F. Forsyth, C. De Rossi, J. K. Blackburn, F. L. Linde, E. Chassande-Mottin, Sylvain Marsat, Sheila Rowan, M. Pürrer, C. Di Giorgio, C. Chan, Hartmut Grote, G. Rutins, Graham Woan, Robert L. Byer, J. Bidler, C. L. Tinsman, M. Fitz-Axen, P. Bacon, Daniel E. Holz, David A. Williams, J. Jones, I. W. Harry, Z. A. Warden, R. Gouaty, S. Wang, B. Patricelli, D. S. Wu, Margaret Millhouse, S. G. Gaonkar, Haixing Miao, H. Ohta, F. Di Giovanni, N. Letendre, Matteo Breschi, K. L. Dooley, Aaron Zimmerman, D. Nothard, Fangchen Feng, Karsten Danzmann, Andrea H. Tapia, G. Losurdo, Lisa Barsotti, Serena Vinciguerra, Benno Willke, Anirban Dasgupta, R. J. G. Jonker, M. Kovalam, C. Di Fronzo, Yuri Levin, J. Gniesmer, Alessandro Nagar, J. S. Lange, B. E. Ewing, Yang Yang, Xing-Jiang Zhu, E. Floden, Gianpietro Cagnoli, Giuseppe Intini, M. Punturo, G. G. Fronzé, M. C. Tringali, Alec Mishkin, R. Cavalieri, W. Parker, Stuart Reid, F. J. Hayes, Jacob Scheuer, I. Michaloliakos, G. Koekoek, A. J. Weinstein, Anindita Ganguly, Slawomir Gras, S. W. S. Ng, S. L. Danilishin, F. Nocera, Alicia M. Sintes, M. Curyło, Kun Li, T. Zhang, C. Cahillane, J. Hennig, V. Gayathri, Neil J. Cornish, F. Vetrano, Parthanil Roy, S. E. Dwyer, David Keitel, Nathan K. Johnson-McDaniel, S. J. Cooper, Jay D. Tasson, M. Landry, F. Frasconi, S. Hochheim, N. A. Robertson, J. G. Bartlett, Márton Tápai, Thibaut Jacqmin, C. I. Torrie, G. Pagano, Bernard F. Schutz, Li Ju, A. K. Srivastava, A. E. Pace, W. H. Wang, A. Basti, Ryan N. Lang, Krzysztof Piotrzkowski, T. J. Slaven-Blair, Albert Lazzarini, S. Walsh, Miriam Cabero, Alessandra Buonanno, R. Metzdorff, A. Lartaux-Vollard, Daniel A. Shaddock, Brittany Kamai, C. V. Kalaghatgi, J. Hanson, M. J. Szczepańczyk, Denis Martynov, Marco Bazzan, D. Singh, R. Flaminio, C. Ingram, A. Tripathee, L. Di Fiore, B. Mours, Suvadeep Bose, Gabrielle Allen, A. C. Green, David Jonathan Hofman, A. V. Bhandari, Z. Márka, F. Meylahn, C. Austin, M. Barsuglia, M. Oliver, L. Pinard, Douglas Davis, Geraint Pratten, Liam Cunningham, M. Merzougui, I. M. Pinto, D. Bersanetti, I. La Rosa, Jean-René Cudell, W. Z. Korth, Torrey Cullen, R. Jaume, R. A. Eisenstein, B. J. J. Slagmolen, Hee-Suk Cho, Jishnu Suresh, G. D. Meadors, Francisco Hernandez Vivanco, Hang Yu, Fausto Acernese, R. Gray, G. Vajente, S. M. Gaebel, J.-P. Coulon, M. 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R., Gier, C., Gill, K., Glanzer, J., Gniesmer, J., Godwin, P., Goetz, E., Goetz, R., Gohlke, N., Goncharov, B., Gonzalez, G., Gopakumar, A., Gossan, S. E., Gosselin, M., Gouaty, R., Grace, B., Grado, A., Granata, M., Grant, A., Gras, S., Grassia, P., Gray, C., Gray, R., Greco, G., Green, A. C., Green, R., Gretarsson, E. M., Griggs, H. L., Grignani, G., Grimaldi, A., Grimm, S. J., Grote, H., Grunewald, S., Gruning, P., Guidi, G. M., Guimaraes, A. R., Guixe, G., Gulati, H. K., Guo, Y., Gupta, A., Gupta, P., Gustafson, E. K., Gustafson, R., Haegel, L., Halim, O., Hall, E. D., Hamilton, E. Z., Hammond, G., Haney, M., Hanke, M. M., Hanks, J., Hanna, C., Hannam, M. D., Hannuksela, O. A., Hansen, T. J., Hanson, J., Harder, T., Hardwick, T., Haris, K., Harms, J., Harry, G. M., Harry, I. W., Hasskew, R. K., Haster, C. -J., Haughian, K., Hayes, F. J., Healy, J., Heidmann, A., Heintze, M. C., Heinze, J., Heitmann, H., Hellman, F., Hello, P., Hemming, G., Hendry, M., Heng, I. 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M., Martinez, V., Martynov, D. V., Masalehdan, H., Mason, K., Massera, E., Masserot, A., Massinger, T. J., Masso-Reid, M., Mastrogiovanni, S., Matas, A., Matichard, F., Mavalvala, N., Maynard, E., Mccann, J. J., Mccarthy, R., Mcclelland, D. E., Mccormick, S., Mcculler, L., Mcguire, S. C., Mcisaac, C., Mciver, J., Mcmanus, D. J., Mcrae, T., Mcwilliams, S. T., Meacher, D., Meadors, G. D., Mehmet, M., Mehta, A. K., Mejuto Villa, E., Melatos, A., Mendell, G., Mercer, R. A., Mereni, L., Merfeld, K., Merilh, E. L., Merritt, J. D., Merzougui, M., Meshkov, S., Messenger, C., Messick, C., Metzdorff, R., Meyers, P. M., Meylahn, F., Mhaske, A., Miani, A., Miao, H., Michaloliakos, I., Michel, C., Middleton, H., Milano, L., Miller, A. L., Millhouse, M., Mills, J. C., Milotti, E., Milovich-Goff, M. C., Minazzoli, O., Minenkov, Y., Mishkin, A., Mishra, C., Mistry, T., Mitra, S., Mitrofanov, V. P., Mitselmakher, G., Mittleman, R., Mo, G., Mogushi, K., Mohapatra, S. R. P., Mohite, S. R., Molina-Ruiz, M., Mondin, M., Montani, M., Moore, C. J., Moraru, D., Morawski, F., Moreno, G., Morisaki, S., Mours, B., Mow-Lowry, C. M., Mozzon, S., Muciaccia, F., Mukherjee, A., Mukherjee, D., Mukherjee, S., Mukund, N., Mullavey, A., Munch, J., Muniz, E. A., Murray, P. G., Nagar, A., Nardecchia, I., Naticchioni, L., Nayak, R. K., Neil, B. F., Neilson, J., Nelemans, G., Nelson, T. J. N., Nery, M., Neunzert, A., Ng, K. Y., Ng, S., Nguyen, C., Nguyen, P., Nichols, D., Nichols, S. A., Nissanke, S., Nitz, A., Nocera, F., Noh, M., North, C., Nothard, D., Nuttall, L. K., Oberling, J., O'Brien, B. D., Oganesyan, G., Ogin, G. H., Oh, J. J., Oh, S. H., Ohme, F., Ohta, H., Okada, M. A., Oliver, M., Olivetto, C., Oppermann, P., Oram, R. J., O'Reilly, B., Ormiston, R. G., Ortega, L. F., O'Shaughnessy, R., Ossokine, S., Osthelder, C., Ottaway, D. J., Overmier, H., Owen, B. J., Pace, A. E., Pagano, G., Page, M. A., Pagliaroli, G., Pai, A., Pai, S. A., Palamos, J. 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K., Srivastava, V., Staats, K., Stachie, C., Standke, M., Steer, D. A., Steinke, M., Steinlechner, J., Steinlechner, S., Steinmeyer, D., Stevenson, S., Stocks, D., Stops, D. J., Stover, M., Strain, K. A., Stratta, G., Strunk, A., Sturani, R., Stuver, A. L., Sudhagar, S., Sudhir, V., Summerscales, T. Z., Sun, L., Sunil, S., Sur, A., Suresh, J., Sutton, P. J., Swinkels, B. L., Szczepanczyk, M. J., Tacca, M., Tait, S. C., Talbot, C., Tanasijczuk, A. J., Tanner, D. B., Tao, D., Tapai, M., Tapia, A., Tapia San Martin, E. N., Tasson, J. D., Taylor, R., Tenorio, R., Terkowski, L., Thirugnanasambandam, M. P., Thomas, M., Thomas, P., Thompson, J. E., Thondapu, S. R., Thorne, K. A., Thrane, E., Tinsman, C. L., Saravanan, T. R., Tiwari, S., Tiwari, V., Toland, K., Tonelli, M., Tornasi, Z., Torres-Forne, A., Torrie, C. I., Tosta E Melo, I., Toyra, D., Travasso, F., Traylor, G., Tringali, M. C., Tripathee, A., Trovato, A., Trudeau, R. J., Tsang, K. W., Tse, M., Tso, R., Tsukada, L., Tsuna, D., Tsutsui, T., Turconi, M., Ubhi, A. S., Udall, R., Ueno, K., Ugolini, D., Unnikrishnan, C. S., Urban, A. L., Usman, S. A., Utina, A. C., Vahlbruch, H., Vajente, G., Valdes, G., Valentini, M., Van Bakel, N., Van Beuzekom, M., Van Den Brand, J. F. J., Van Den Broeck, C., Vander-Hyde, D. C., Van Der Schaaf, L., Van Heijningen, J. V., Van Veggel, A. A., Vardaro, M., Varma, V., Vass, S., Vasuth, M., Vecchio, A., Vedovato, G., Veitch, J., Veitch, P. J., Venkateswara, K., Venugopalan, G., Verkindt, D., Veske, D., Vetrano, F., Vicere, A., Viets, A. D., Vinciguerra, S., Vine, D. J., Vinet, J. -Y., Vitale, S., Vivanco, F. H., Vo, T., Vocca, H., Vorvick, C., Vyatchanin, S. P., Wade, A. R., Wade, L. E., Wade, M., Walet, R., Walker, M., Wallace, G. S., Wallace, L., Walsh, S., Wang, J. Z., Wang, S., Wang, W. H., Ward, R. L., Warden, Z. A., Warner, J., Was, M., Watchi, J., Weaver, B., Wei, L. -W., Weinert, M., Weinstein, A. J., Weiss, R., Wellmann, F., Wen, L., Wessels, P., Westhouse, J. W., Wette, K., Whelan, J. T., Whiting, B. F., Whittle, C., Wilken, D. M., Williams, D., Willis, J. L., Willke, B., Winkler, W., Wipf, C. C., Wittel, H., Woan, G., Woehler, J., Wofford, J. K., Wong, I. C. F., Wright, J. L., Wu, D. S., Wysocki, D. M., Xiao, L., Yamamoto, H., Yang, L., Yang, Y., Yang, Z., Yap, M. J., Yazback, M., Yeeles, D. W., Yu, H., Yuen, S. H. R., Zadrozny, A. K., Zadrozny, A., Zanolin, M., Zelenova, T., Zendri, J. -P., Zevin, M., Zhang, J., Zhang, L., Zhang, T., Zhao, C., Zhao, G., Zhou, M., Zhou, Z., Zhu, X. J., Zimmerman, A. B., Zucker, M. E., Zweizig, J., Arène, M., Bécsy, B., Calderón Bustillo, J., Castañeda, J., Cavaglià, M., Cerdá-Durán, P., Cieślar, M., Cordero-Carrión, I., Canton, T. Dal, Dálya, G., D’Angelo, B., D’Antonio, S., Deléglise, S., D’Emilio, V., de Varona, O., Díaz, M. C., D’Urso, D., Fronzè, G., García-Quirós, C., Ghosh, Abhirup, Ghosh, Archisman, González, G., Guixé, G., Gupta, Anchal, Hübner, M. T., Johnson-McDaniel, N. K., Kéfélian, F., Kim, Chunglee, Królak, A., Kumar, Rahul, Kumar, Rakesh, Lück, H., Magaña Hernandez, I., Magaña-Sandoval, F., Márka, S., Márka, Z., Mukherjee, Arunava, Mukherjee, Subroto, Muñiz, E. A., O’Brien, B. D., Oram, Richard J., O’Reilly, B., O’Shaughnessy, R., Périgois, C., Perriès, S., Pürrer, M., Rana, Javed, Rosińska, D., Roy, Santosh, Roy, Soumen, Schönbeck, A., Szczepańczyk, M. J., Tápai, M., Tiwari, Shubhanshu, Torres-Forné, A., Tosta e Melo, I., Töyrä, D., van Bakel, N., van Beuzekom, M., van den Brand, J. F. J., van der Schaaf, L., van Veggel, A. A., Vasúth, M., Viceré, A., Vivanco, Francisco Hernandez, Weßels, P., Yu, Hang, Yu, Haocun, Zadrożny, A. K., Zadrożny, A., Laboratoire des matériaux avancés (LMA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Centre National de la Recherche Scientifique (CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Institut des Fonctions Optiques pour les Technologies de l'informatiON (Institut FOTON), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Laboratoire Kastler Brossel (LKB [Collège de France]), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Collège de France (CdF (institution)), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut des Hautes Etudes Scientifiques (IHES), IHES, LIGO Scientific, Virgo, RS: FSE Grav. waves and fundamental physics, Grav. waves and fundamental physics, RS: FSE MSP, Abbott, R, Abbott, T, Abraham, S, Acernese, F, Ackley, K, Adams, C, Adhikari, R, Adya, V, Affeldt, C, Agathos, M, Agatsuma, K, Aggarwal, N, Aguiar, O, Aich, A, Aiello, L, Ain, A, Ajith, P, Akcay, S, Allen, G, Allocca, A, Altin, P, Amato, A, Anand, S, Ananyeva, A, Anderson, S, Anderson, W, Angelova, S, Ansoldi, S, Antier, S, Appert, S, Arai, K, Araya, M, Areeda, J, Arene, M, Arnaud, N, Aronson, S, Arun, K, Asali, Y, Ascenzi, S, Ashton, G, Aston, S, Astone, P, Aubin, F, Aufmuth, P, Aultoneal, K, Austin, C, Avendano, V, Babak, S, Bacon, P, Badaracco, F, Bader, M, Bae, S, Baer, A, Baird, J, Baldaccini, F, Ballardin, G, Ballmer, S, Bals, A, Balsamo, A, Baltus, G, Banagiri, S, Bankar, D, Bankar, R, Barayoga, J, Barbieri, C, Barish, B, Barker, D, Barkett, K, Barneo, P, Barone, F, Barr, B, Barsotti, L, Barsuglia, M, Barta, D, Bartlett, J, Bartos, I, Bassiri, R, Basti, A, Bawaj, M, Bayley, J, Bazzan, M, Becsy, B, Bejger, M, Belahcene, I, Bell, A, Beniwal, D, Benjamin, M, Bentley, J, Bergamin, F, Berger, B, Bergmann, G, Bernuzzi, S, Berry, C, Bersanetti, D, Bertolini, A, Betzwieser, J, Bhandare, R, Bhandari, A, Bidler, J, Biggs, E, Bilenko, I, Billingsley, G, Birney, R, Birnholtz, O, Biscans, S, Bischi, M, Biscoveanu, S, Bisht, A, Bissenbayeva, G, Bitossi, M, Bizouard, M, Blackburn, J, Blackman, J, Blair, C, Blair, D, Blair, R, Bobba, F, Bode, N, Boer, M, Boetzel, Y, Bogaert, G, Bondu, F, Bonilla, E, Bonnand, R, Booker, P, Boom, B, Bork, R, Boschi, V, Bose, S, Bossilkov, V, Bosveld, J, Bouffanais, Y, Bozzi, A, Bradaschia, C, Brady, P, Bramley, A, Branchesi, M, Brau, J, Breschi, M, Briant, T, Briggs, J, Brighenti, F, Brillet, A, Brinkmann, M, Brockill, P, Brooks, A, Brooks, J, Brown, D, Brunett, S, Bruno, G, Bruntz, R, Buikema, A, Bulik, T, Bulten, H, Buonanno, A, Buscicchio, R, Buskulic, D, Byer, R, Cabero, M, Cadonati, L, Cagnoli, G, Cahillane, C, Calderon Bustillo, J, Callaghan, J, Callister, T, Calloni, E, Camp, J, Canepa, M, Cannon, K, Cao, H, Cao, J, Carapella, G, Carbognani, F, Caride, S, Carney, M, Carullo, G, Casanueva Diaz, J, Casentini, C, Castaneda, J, Caudill, S, Cavaglia, M, Cavalier, F, Cavalieri, R, Cella, G, Cerda-Duran, P, Cesarini, E, Chaibi, O, Chakravarti, K, Chan, C, Chan, M, Chandra, K, Chao, S, Charlton, P, Chase, E, Chassande-Mottin, E, Chatterjee, D, Chaturvedi, M, Chatziioannou, K, Chen, H, Chen, X, Chen, Y, Cheng, H, Cheong, C, Chia, H, Chiadini, F, Chierici, R, Chincarini, A, Chiummo, A, Cho, G, Cho, H, Cho, M, Christensen, N, Chu, Q, Chua, S, Chung, K, Chung, S, Ciani, G, Ciecielag, P, Cieslar, M, Ciobanu, A, Ciolfi, R, Cipriano, F, Cirone, A, Clara, F, Clark, J, Clearwater, P, Clesse, S, Cleva, F, Coccia, E, Cohadon, P, Cohen, D, Colleoni, M, Collette, C, Collins, C, Colpi, M, Constancio, M, Conti, L, Cooper, S, Corban, P, Corbitt, T, Cordero-Carrion, I, Corezzi, S, Corley, K, Cornish, N, Corre, D, Corsi, A, Cortese, S, Costa, C, Cotesta, R, Coughlin, M, Coughlin, S, Coulon, J, Countryman, S, Couvares, P, Covas, P, Coward, D, Cowart, M, Coyne, D, Coyne, R, Creighton, J, Creighton, T, Cripe, J, Croquette, M, Crowder, S, Cudell, J, Cullen, T, Cumming, A, Cummings, R, Cunningham, L, Cuoco, E, Curylo, M, Canton, T, Dalya, G, Dana, A, Daneshgaran-Bajastani, L, D'Angelo, B, Danilishin, S, D'Antonio, S, Danzmann, K, Darsow-Fromm, C, Dasgupta, A, Datrier, L, Dattilo, V, Dave, I, Davier, M, Davies, G, Davis, D, Daw, E, Debra, D, Deenadayalan, M, Degallaix, J, De Laurentis, M, Deleglise, S, Delfavero, M, De Lillo, N, Del Pozzo, W, Demarchi, L, D'Emilio, V, Demos, N, Dent, T, De Pietri, R, De Rosa, R, De Rossi, C, Desalvo, R, de Varona, O, Dhurandhar, S, Diaz, M, Diaz-Ortiz, M, Dietrich, T, Di Fiore, L, Di Fronzo, C, Di Giorgio, C, Di Giovanni, F, Di Giovanni, M, Di Girolamo, T, Di Lieto, A, Ding, B, Di Pace, S, Di Palma, I, Di Renzo, F, Divakarla, A, Dmitriev, A, Doctor, Z, Donovan, F, Dooley, K, Doravari, S, Dorrington, I, Downes, T, Drago, M, Driggers, J, Du, Z, Ducoin, J, Dupej, P, Durante, O, D'Urso, D, Dwyer, S, Easter, P, Eddolls, G, Edelman, B, Edo, T, Edy, O, Effler, A, Ehrens, P, Eichholz, J, Eikenberry, S, Eisenmann, M, Eisenstein, R, Ejlli, A, Errico, L, Essick, R, Estelles, H, Estevez, D, Etienne, Z, Etzel, T, Evans, M, Evans, T, Ewing, B, Fafone, V, Fairhurst, S, Fan, X, Farinon, S, Farr, B, Farr, W, Fauchon-Jones, E, Favata, M, Fays, M, Fazio, M, Feicht, J, Fejer, M, Feng, F, Fenyvesi, E, Ferguson, D, Fernandez-Galiana, A, Ferrante, I, Ferreira, E, Ferreira, T, Fidecaro, F, Fiori, I, Fiorucci, D, Fishbach, M, Fisher, R, Fittipaldi, R, Fitz-Axen, M, Fiumara, V, Flaminio, R, Floden, E, Flynn, E, Fong, H, Font, J, Forsyth, P, Fournier, J, Frasca, S, Frasconi, F, Frei, Z, Freise, A, Frey, R, Frey, V, Fritschel, P, Frolov, V, Fronze, G, Fulda, P, Fyffe, M, Gabbard, H, Gadre, B, Gaebel, S, Gair, J, Galaudage, S, Ganapathy, D, Ganguly, A, Gaonkar, S, Garcia-Quiros, C, Garufi, F, Gateley, B, Gaudio, S, Gayathri, V, Gemme, G, Genin, E, Gennai, A, George, D, George, J, Gergely, L, Ghonge, S, Ghosh, A, Ghosh, S, Giacomazzo, B, Giaime, J, Giardina, K, Gibson, D, Gier, C, Gill, K, Glanzer, J, Gniesmer, J, Godwin, P, Goetz, E, Goetz, R, Gohlke, N, Goncharov, B, Gonzalez, G, Gopakumar, A, Gossan, S, Gosselin, M, Gouaty, R, Grace, B, Grado, A, Granata, M, Grant, A, Gras, S, Grassia, P, Gray, C, Gray, R, Greco, G, Green, A, Green, R, Gretarsson, E, Griggs, H, Grignani, G, Grimaldi, A, Grimm, S, Grote, H, Grunewald, S, Gruning, P, Guidi, G, Guimaraes, A, Guixe, G, Gulati, H, Guo, Y, Gupta, A, Gupta, P, Gustafson, E, Gustafson, R, Haegel, L, Halim, O, Hall, E, Hamilton, E, Hammond, G, Haney, M, Hanke, M, Hanks, J, Hanna, C, Hannam, M, Hannuksela, O, Hansen, T, Hanson, J, Harder, T, Hardwick, T, Haris, K, Harms, J, Harry, G, Harry, I, Hasskew, R, Haster, C, Haughian, K, Hayes, F, Healy, J, Heidmann, A, Heintze, M, Heinze, J, Heitmann, H, Hellman, F, Hello, P, Hemming, G, Hendry, M, Heng, I, Hennes, E, Hennig, J, Heurs, M, Hild, S, Hinderer, T, Hoback, S, Hochheim, S, Hofgard, E, Hofman, D, Holgado, A, Holland, N, Holt, K, Holz, D, Hopkins, P, Horst, C, Hough, J, Howell, E, Hoy, C, Huang, Y, Hubner, M, Huerta, E, Huet, D, Hughey, B, Hui, V, Husa, S, Huttner, S, Huxford, R, Huynh-Dinh, T, Idzkowski, B, Iess, A, Inchauspe, H, Ingram, C, Intini, G, Isac, J, Isi, M, Iyer, B, Jacqmin, T, Jadhav, S, James, A, Jani, K, Janthalur, N, Jaranowski, P, Jariwala, D, Jaume, R, Jenkins, A, Jiang, J, Johns, G, Johnson-McDaniel, N, Jones, A, Jones, D, Jones, J, Jones, P, Jones, R, Jonker, R, Ju, L, Junker, J, Kalaghatgi, C, Kalogera, V, Kamai, B, Kandhasamy, S, Kang, G, Kanner, J, Kapadia, S, Karki, S, Kashyap, R, Kasprzack, M, Kastaun, W, Katsanevas, S, Katsavounidis, E, Katzman, W, Kaufer, S, Kawabe, K, Kefelian, F, Keitel, D, Keivani, A, Kennedy, R, Key, J, Khadka, S, Khalili, F, Khan, I, Khan, S, Khan, Z, Khazanov, E, Khetan, N, Khursheed, M, Kijbunchoo, N, Kim, C, Kim, G, Kim, J, Kim, K, Kim, W, Kim, Y, Kimball, C, King, P, Kinley-Hanlon, M, Kirchhoff, R, Kissel, J, Kleybolte, L, Klimenko, S, Knowles, T, Knyazev, E, Koch, P, Koehlenbeck, S, Koekoek, G, Koley, S, Kondrashov, V, Kontos, A, Koper, N, Korobko, M, Korth, W, Kovalam, M, Kozak, D, Kringel, V, Krishnendu, N, Krolak, A, Krupinski, N, Kuehn, G, Kumar, A, Kumar, P, Kumar, R, Kumar, S, Kuo, L, Kutynia, A, Lackey, B, Laghi, D, Lalande, E, Lam, T, Lamberts, A, Landry, M, Lane, B, Lang, R, Lange, J, Lantz, B, Lanza, R, La Rosa, I, Lartaux-Vollard, A, Lasky, P, Laxen, M, Lazzarini, A, Lazzaro, C, Leaci, P, Leavey, S, Lecoeuche, Y, Lee, C, Lee, H, Lee, J, Lee, K, Lehmann, J, Leroy, N, Letendre, N, Levin, Y, Li, A, Li, J, Li, K, Li, T, Li, X, Linde, F, Linker, S, Linley, J, Littenberg, T, Liu, J, Liu, X, Llorens-Monteagudo, M, Lo, R, Lockwood, A, London, L, Longo, A, Lorenzini, M, Loriette, V, Lormand, M, Losurdo, G, Lough, J, Lousto, C, Lovelace, G, Luck, H, Lumaca, D, Lundgren, A, Ma, Y, Macas, R, Macfoy, S, Macinnis, M, Macleod, D, Macmillan, I, Macquet, A, Magana Hernandez, I, Magana-Sandoval, F, Magee, R, Majorana, E, Maksimovic, I, Malik, A, Man, N, Mandic, V, Mangano, V, Mansell, G, Manske, M, Mantovani, M, Mapelli, M, Marchesoni, F, Marion, F, Marka, S, Marka, Z, Markakis, C, Markosyan, A, Markowitz, A, Maros, E, Marquina, A, Marsat, S, Martelli, F, Martin, I, Martin, R, Martinez, V, Martynov, D, Masalehdan, H, Mason, K, Massera, E, Masserot, A, Massinger, T, Masso-Reid, M, Mastrogiovanni, S, Matas, A, Matichard, F, Mavalvala, N, Maynard, E, Mccann, J, Mccarthy, R, Mcclelland, D, Mccormick, S, Mcculler, L, Mcguire, S, Mcisaac, C, Mciver, J, Mcmanus, D, Mcrae, T, Mcwilliams, S, Meacher, D, Meadors, G, Mehmet, M, Mehta, A, Mejuto Villa, E, Melatos, A, Mendell, G, Mercer, R, Mereni, L, Merfeld, K, Merilh, E, Merritt, J, Merzougui, M, Meshkov, S, Messenger, C, Messick, C, Metzdorff, R, Meyers, P, Meylahn, F, Mhaske, A, Miani, A, Miao, H, Michaloliakos, I, Michel, C, Middleton, H, Milano, L, Miller, A, Millhouse, M, Mills, J, Milotti, E, Milovich-Goff, M, Minazzoli, O, Minenkov, Y, Mishkin, A, Mishra, C, Mistry, T, Mitra, S, Mitrofanov, V, Mitselmakher, G, Mittleman, R, Mo, G, Mogushi, K, Mohapatra, S, Mohite, S, Molina-Ruiz, M, Mondin, M, Montani, M, Moore, C, Moraru, D, Morawski, F, Moreno, G, Morisaki, S, Mours, B, Mow-Lowry, C, Mozzon, S, Muciaccia, F, Mukherjee, A, Mukherjee, D, Mukherjee, S, Mukund, N, Mullavey, A, Munch, J, Muniz, E, Murray, P, Nagar, A, Nardecchia, I, Naticchioni, L, Nayak, R, Neil, B, Neilson, J, Nelemans, G, Nelson, T, Nery, M, Neunzert, A, Ng, K, Ng, S, Nguyen, C, Nguyen, P, Nichols, D, Nichols, S, Nissanke, S, Nitz, A, Nocera, F, Noh, M, North, C, Nothard, D, Nuttall, L, Oberling, J, O'Brien, B, Oganesyan, G, Ogin, G, Oh, J, Oh, S, Ohme, F, Ohta, H, Okada, M, Oliver, M, Olivetto, C, Oppermann, P, Oram, R, O'Reilly, B, Ormiston, R, Ortega, L, O'Shaughnessy, R, Ossokine, S, Osthelder, C, Ottaway, D, Overmier, H, Owen, B, Pace, A, Pagano, G, Page, M, Pagliaroli, G, Pai, A, Pai, S, Palamos, J, Palashov, O, Palomba, C, Pan, H, Panda, P, Pang, P, Pankow, C, Pannarale, F, Pant, B, Paoletti, F, Paoli, A, Parida, A, Parker, W, Pascucci, D, Pasqualetti, A, Passaquieti, R, Passuello, D, Patricelli, B, Payne, E, Pearlstone, B, Pechsiri, T, Pedersen, A, Pedraza, M, Pele, A, Penn, S, Perego, A, Perez, C, Perigois, C, Perreca, A, Perries, S, Petermann, J, Pfeiffer, H, Phelps, M, Phukon, K, Piccinni, O, Pichot, M, Piendibene, M, Piergiovanni, F, Pierro, V, Pillant, G, Pinard, L, Pinto, I, Piotrzkowski, K, Pirello, M, Pitkin, M, Plastino, W, Poggiani, R, Pong, D, Ponrathnam, S, Popolizio, P, Porter, E, Powell, J, Prajapati, A, Prasai, K, Prasanna, R, Pratten, G, Prestegard, T, Principe, M, Prodi, G, Prokhorov, L, Punturo, M, Puppo, P, Purrer, M, Qi, H, Quetschke, V, Quinonez, P, Raab, F, Raaijmakers, G, Radkins, H, Radulesco, N, Raffai, P, Rafferty, H, Raja, S, Rajan, C, Rajbhandari, B, Rakhmanov, M, Ramirez, K, Ramos-Buades, A, Rana, J, Rao, K, Rapagnani, P, Raymond, V, Razzano, M, Read, J, Regimbau, T, Rei, L, Reid, S, Reitze, D, Rettegno, P, Ricci, F, Richardson, C, Richardson, J, Ricker, P, Riemenschneider, G, Riles, K, Rizzo, M, Robertson, N, Robinet, F, Rocchi, A, Rodriguez-Soto, R, Rolland, L, Rollins, J, Roma, V, Romanelli, M, Romano, R, Romel, C, Romero-Shaw, I, Romie, J, Rose, C, Rose, D, Rose, K, Rosinska, D, Rosofsky, S, Ross, M, Rowan, S, Rowlinson, S, Roy, P, Roy, S, Ruggi, P, Rutins, G, Ryan, K, Sachdev, S, Sadecki, T, Sakellariadou, M, Salafia, O, Salconi, L, Saleem, M, Salemi, F, Samajdar, A, Sanchez, E, Sanchez, L, Sanchis-Gual, N, Sanders, J, Santiago, K, Santos, E, Sarin, N, Sassolas, B, Sathyaprakash, B, Sauter, O, Savage, R, Savant, V, Sawant, D, Sayah, S, Schaetzl, D, Schale, P, Scheel, M, Scheuer, J, Schmidt, P, Schnabel, R, Schofield, R, Schonbeck, A, Schreiber, E, Schulte, B, Schutz, B, Schwarm, O, Schwartz, E, Scott, J, Scott, S, Seidel, E, Sellers, D, Sengupta, A, Sennett, N, Sentenac, D, Sequino, V, Sergeev, A, Setyawati, Y, Shaddock, D, Shaffer, T, Sharifi, S, Shahriar, M, Sharma, A, Sharma, P, Shawhan, P, Shen, H, Shikauchi, M, Shink, R, Shoemaker, D, Shukla, K, Shyamsundar, S, Siellez, K, Sieniawska, M, Sigg, D, Singer, L, Singh, D, Singh, N, Singha, A, Singhal, A, Sintes, A, Sipala, V, Skliris, V, Slagmolen, B, Slaven-Blair, T, Smetana, J, Smith, J, Smith, R, Somala, S, Son, E, Soni, S, Sorazu, B, Sordini, V, Sorrentino, F, Souradeep, T, Sowell, E, Spencer, A, Spera, M, Srivastava, A, Srivastava, V, Staats, K, Stachie, C, Standke, M, Steer, D, Steinke, M, Steinlechner, J, Steinlechner, S, Steinmeyer, D, Stevenson, S, Stocks, D, Stops, D, Stover, M, Strain, K, Stratta, G, Strunk, A, Sturani, R, Stuver, A, Sudhagar, S, Sudhir, V, Summerscales, T, Sun, L, Sunil, S, Sur, A, Suresh, J, Sutton, P, Swinkels, B, Szczepanczyk, M, Tacca, M, Tait, S, Talbot, C, Tanasijczuk, A, Tanner, D, Tao, D, Tapai, M, Tapia, A, Tapia San Martin, E, Tasson, J, Taylor, R, Tenorio, R, Terkowski, L, Thirugnanasambandam, M, Thomas, M, Thomas, P, Thompson, J, Thondapu, S, Thorne, K, Thrane, E, Tinsman, C, Saravanan, T, Tiwari, S, Tiwari, V, Toland, K, Tonelli, M, Tornasi, Z, Torres-Forne, A, Torrie, C, Tosta E Melo, I, Toyra, D, Travasso, F, Traylor, G, Tringali, M, Tripathee, A, Trovato, A, Trudeau, R, Tsang, K, Tse, M, Tso, R, Tsukada, L, Tsuna, D, Tsutsui, T, Turconi, M, Ubhi, A, Udall, R, Ueno, K, Ugolini, D, Unnikrishnan, C, Urban, A, Usman, S, Utina, A, Vahlbruch, H, Vajente, G, Valdes, G, Valentini, M, van Bakel, N, van Beuzekom, M, van den Brand, J, Van Den Broeck, C, Vander-Hyde, D, van der Schaaf, L, Van Heijningen, J, van Veggel, A, Vardaro, M, Varma, V, Vass, S, Vasuth, M, Vecchio, A, Vedovato, G, Veitch, J, Veitch, P, Venkateswara, K, Venugopalan, G, Verkindt, D, Veske, D, Vetrano, F, Vicere, A, Viets, A, Vinciguerra, S, Vine, D, Vinet, J, Vitale, S, Vivanco, F, Vo, T, Vocca, H, Vorvick, C, Vyatchanin, S, Wade, A, Wade, L, Wade, M, Walet, R, Walker, M, Wallace, G, Wallace, L, Walsh, S, Wang, J, Wang, S, Wang, W, Ward, R, Warden, Z, Warner, J, Was, M, Watchi, J, Weaver, B, Wei, L, Weinert, M, Weinstein, A, Weiss, R, Wellmann, F, Wen, L, Wessels, P, Westhouse, J, Wette, K, Whelan, J, Whiting, B, Whittle, C, Wilken, D, Williams, D, Willis, J, Willke, B, Winkler, W, Wipf, C, Wittel, H, Woan, G, Woehler, J, Wofford, J, Wong, I, Wright, J, Wu, D, Wysocki, D, Xiao, L, Yamamoto, H, Yang, L, Yang, Y, Yang, Z, Yap, M, Yazback, M, Yeeles, D, Yu, H, Yuen, S, Zadrozny, A, Zanolin, M, Zelenova, T, Zendri, J, Zevin, M, Zhang, J, Zhang, L, Zhang, T, Zhao, C, Zhao, G, Zhou, M, Zhou, Z, Zhu, X, Zimmerman, A, Zucker, M, Zweizig, J, The LIGO Scientific Collaboration, The Virgo Collaboration, Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut des Hautes Études Scientifiques (IHES), National Science Foundation (US), Science and Technology Facilities Council (UK), Agencia Estatal de Investigación (España), Generalitat de Catalunya, Govern de les Illes Balears, Generalitat Valenciana, European Commission, IoP (FNWI), Faculty of Science, Gravitation and Astroparticle Physics Amsterdam, Other Research IHEF (IoP, FNWI), Astroparticle Physics (IHEF, IoP, FNWI), and (Astro)-Particles Physics
Subjects: Astronomy, General Physics and Astronomy, detector: network, Astrophysics, Gravitational waves, Binary black holes, Intermediate mass black holes, 01 natural sciences, General Relativity and Quantum Cosmology, gravitational waves, black holes, GW190521, BBH, Intermediate mass black holes, LIGO, 10. No inequality, QC, QB, Settore FIS/01, astro-ph.HE, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, PAIR-INSTABILITY, Settore FIS/05, statistical analysis: Bayesian, Supernova, Physical Sciences, Physique des particules élémentaires, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Astrophysics - High Energy Astrophysical Phenomena, Gravitational wave, data analysis method, gr-qc, Physics, Multidisciplinary, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Physics and Astronomy(all), Gravitation and Astrophysics, pair-instability, Settore FIS/05 - Astronomia e Astrofisica, Binary black hole, Binary black holes, Neutron stars,gravitational waves, supernova, 0103 physical sciences, 010306 general physics, Luminosity distance, STFC, GW190521, Science & Technology, 9. Industry and infrastructure, gravitational radiation, RCUK, black hole: mass, gravitational waves, black hole, gravitational radiation detector, Redshift, Black hole, wave: model, VIRGO, black hole: binary, Intermediate-mass black hole, gravitational radiation: emission, BBH, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: LIGO Scientific Collaboration and Virgo Collaboration: et al., On May 21, 2019 at 03:02:29 UTC Advanced LIGO and Advanced Virgo observed a short duration gravitational-wave signal, GW190521, with a three-detector network signal-to-noise ratio of 14.7, and an estimated false-alarm rate of 1 in 4900 yr using a search sensitive to generic transients. If GW190521 is from a quasicircular binary inspiral, then the detected signal is consistent with the merger of two black holes with masses of 85+21−14M⊙ and 66+17−18M⊙ (90% credible intervals). We infer that the primary black hole mass lies within the gap produced by (pulsational) pair-instability supernova processes, with only a 0.32% probability of being below 65M⊙. We calculate the mass of the remnant to be 142+28−16M⊙, which can be considered an intermediate mass black hole (IMBH). The luminosity distance of the source is 5.3+2.4−2.6Gpc corresponding to a redshift of 0.82+0.28−0.34. The inferred rate of mergers similar to GW190521 is 0.13+0.30−0.11Gpc−3yr−1., The authors gratefully acknowledge the support of the United States National Science Foundation (NSF) for the construction and operation of the LIGO Laboratory and Advanced LIGO as well as the Science and Technology Facilities Council (STFC) of the United Kingdom, the Max-Planck-Society (MPS), and the State of Niedersachsen/Germany for support of the construction of Advanced LIGO and construction and operation of the GEO600 detector. Additional support for Advanced LIGO was provided by the Australian Research Council. The authors gratefully acknowledge the Italian Istituto Nazionale di Fisica Nucleare (INFN), the French Centre National de la Recherche Scientifique (CNRS) and the Netherlands Organization for Scientific Research, for the construction and operation of the Virgo detector and the creation and support of the EGO consortium. The authors also gratefully acknowledge research support from these agencies as well as by the Council of Scientific and Industrial Research of India, the Department of Science and Technology, India, the Science & Engineering Research Board (SERB), India, the Ministry of Human Resource Development, India, the Spanish Agencia Estatal de Investigación, the Vicepresidencia i Conselleria d’Innovació, Recerca i Turisme and the Conselleria d’Educació i Universitat del Govern de les Illes Balears, the Conselleria d’Innovació, Universitats, Ciencia i Societat Digital de la Generalitat Valenciana and the CERCA Programme Generalitat de Catalunya, Spain, the National Science Centre of Poland, the Swiss National Science Foundation (SNSF), the Russian Foundation for Basic Research, the Russian Science Foundation, the European Commission, the European Regional Development Funds (ERDF), the Royal Society, the Scottish Funding Council, the Scottish Universities Physics Alliance, the Hungarian Scientific Research Fund (OTKA), the French Lyon Institute of Origins (LIO), the Belgian Fonds de la Recherche Scientifique (FRS-FNRS), Actions de Recherche Concertees (ARC) and Fonds Wetenschappelijk Onderzoek–Vlaanderen (FWO), Belgium, the Paris Île-de-France Region, the National Research, Development and Innovation Office Hungary (NKFIH), the National Research Foundation of Korea, Industry Canada and the Province of Ontario through the Ministry of Economic Development and Innovation, the Natural Science and Engineering Research Council Canada, the Canadian Institute for Advanced Research, the Brazilian Ministry of Science, Technology, Innovations, and Communications, the International Center for Theoretical Physics South American Institute for Fundamental Research (ICTPSAIFR), the Research Grants Council of Hong Kong, the National Natural Science Foundation of China (NSFC), the Leverhulme Trust, the Research Corporation, the Ministry of Science and Technology (MOST), Taiwan and the Kavli Foundation. The authorsgratefully acknowledge the support of the NSF, STFC, INFN and CNRS for provision of computational resources.
Published: 2020

14. Changes in gene expression during germination reveal pea genotypes with either 'quiescence' or 'escape' mechanisms of waterlogging tolerance

Author: Parwinder Kaur, Al Imran Malik, Shahin Uz Zaman, and William Erskine
Subjects: 0106 biological sciences, 0301 basic medicine, chemistry.chemical_classification, biology, Physiology, Protein metabolism, Lipid metabolism, Plant Science, biology.organism_classification, 01 natural sciences, Pisum, Cell biology, 03 medical and health sciences, chemistry.chemical_compound, 030104 developmental biology, chemistry, Adenine nucleotide, Gene expression, Storage protein, Gene, 010606 plant biology & botany, Waterlogging (agriculture)
Abstract: Waterlogging causes germination failure in pea (Pisum sativum L.). Three genotypes (BARI Motorshuti-3, Natore local-2 [NL-2], and Kaspa) contrasting in ability to germinate in waterlogged soil were exposed to different durations of waterlogging. Whole genome RNAseq was employed to capture differentially expressing genes. The ability to germinate in waterlogged soil was associated with testa colour and testa membrane integrity as confirmed by electrical conductivity measurements. Genotypes Kaspa and NL-2 displayed different mechanisms of tolerance. In Kaspa, an energy conserving strategy was indicated by a strong upregulation of tyrosine protein kinsase and down regulation of linoleate 9S-lipoxygenase 5, a fat metabolism gene. In contrast, a faster energy utilization strategy was suggested in NL-2 by the marked upregulation of a subtilase family protein and peroxisomal adenine nucleotide carrier 2, a fat metabolizing gene. Waterlogging susceptibility in germinating seeds of genotype BARI Motorshuti-3 was linked to upregulation of a kunitz-type trypsin/protease inhibitor that blocks protein metabolism and may lead to excessive lipid metabolism and the membrane leakage associated with waterlogging damage. Pathway analyses based on gene ontologies showed seed storage protein metabolism as upregulated in tolerant genotypes and downregulated in the sensitive genotype. Understanding the tolerance mechanism provides a platform to breed for adaptation to waterlogging stress at germination in pea.
Published: 2018

15. Waterlogging tolerance of pea at germination

Author: Parwinder Kaur, M. S. Zaman, Al Imran Malik, and William Erskine
Subjects: 0106 biological sciences, Germplasm, Conventional tillage, biology, Sowing, 04 agricultural and veterinary sciences, Plant Science, biology.organism_classification, 01 natural sciences, Pisum, Tillage, Sativum, Agronomy, Germination, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Agronomy and Crop Science, 010606 plant biology & botany, Waterlogging (agriculture)
Abstract: Peas (Pisum sativum L.) are exposed to waterlogging at germination when grown as relay in rice-based cropping. Ninety-one germplasm accessions were evaluated in relay (sown in waterlogged soil), and subsequently 10 diverse genotypes compared under relay and sole cropping (conventional tillage sowing) over two seasons in Bangladesh. Contrasting genotypes, BM-3, NL-2 and Kaspa, were further evaluated in three waterlogging treatments (drained control, 4 and 8 days waterlogging) in the glasshouse. Conspicuous variation in waterlogging tolerance at germination was observed in the field and confirmed under controlled conditions. In relay sowing in 2011, emergence of a few genotypes was affected by waterlogging. In 2012, emergence in relay was severely affected (12 plants/m2) compared to sole sowing (37 plants/m2). Among genotypes BM-3 had 6 plants/m2 emerge, which all subsequently died, in contrast to NL-2 in which emergence was 13 plants/m2 with all plants surviving. In the glasshouse, there was 14% emergence in BM-3, 40% in NL-2 and 55% in Kaspa after 8 days of waterlogging. Such marked differences in waterlogging tolerance at germination in the model pea are the first reported and illustrate prospects for selection to improve adaptation to relay sowing in South Asia.
Published: 2017

16. Cropping system intensification: vegetable pea can replace fallow between rainfed monsoon rice and irrigated spring rice

Author: B. Anwar, M. A. Hossain, Ken Flower, M. S. Rahman, William Erskine, Munsur Rahman, M. Nasim, M. O. Ali, and Al Imran Malik
Subjects: 0106 biological sciences, Oryza sativa, 04 agricultural and veterinary sciences, Biology, Upland rice, 01 natural sciences, Crop, Sativum, Agronomy, 040103 agronomy & agriculture, Genetics, 0401 agriculture, forestry, and fisheries, Animal Science and Zoology, Cultivar, Cropping system, Agronomy and Crop Science, Cropping, Legume, 010606 plant biology & botany
Abstract: SUMMARYThe Eastern Gangetic Plain is among the world's most intensively farmed regions, where rainfed and irrigated agriculture coexist. While the region and especially Bangladesh is a major producer of rice (Oryza sativa L. ssp. indica), there is potential to further develop sustainable rice production systems. Specifically, there is scope to include a replacement crop for the short fallow between rice crops in the dominant cropping pattern of rainfed monsoon rice harvest followed by irrigated spring rice. The aim of the current research was to identify a suitable cool-season legume crop – pea (Pisum sativum L.) or lentil (Lens culinaris Medik. ssp. culinaris) – that could be grown in the brief period between rice crops. The study comprised four crop sequence experiments comparing legume cultivars differing in maturity grown in between both long and short duration rice cultivars. These experiments were done at the Bangladesh Rice Research Institute regional station at Rajshahi over three cropping cycles. This was followed by an evaluation of pea vs. fallow between rice crops on three farmers’ fields in one cropping cycle. Here it is demonstrated that green pod vegetable pea is one of the best options to intensify the rainfed monsoon rice–fallow–spring irrigated rice cropping system, notwithstanding other remunerative rabi cropping options that could displace boro rice. The inclusion of an extra crop, pea as green pod vegetable, increased farm productivity by 1·4-fold over the dominant cropping sequence (rice–fallow–rice) and farm net income by fourfold. The study highlighted the advantages in total system productivity and monetary return of crop intensification with the inclusion of a pea crop between successive rice crops instead of a fallow period.
Published: 2017

17. Diel O2 Dynamics in Partially and Completely Submerged Deepwater Rice: Leaf Gas Films Enhance Internodal O2 Status, Influence Gene Expression and Accelerate Stem Elongation for 'Snorkelling' during Submergence

Author: Motoyuki Ashikari, Ole Pedersen, Al Imran Malik, Masaya Koike, Timothy D. Colmer, Keisuke Nagai, Yoshinao Mori, and Yusuke Kurokawa
Subjects: 0106 biological sciences, 0301 basic medicine, Physiology, Stem elongation, Plant Science, Biology, 01 natural sciences, 03 medical and health sciences, Photosynthesis, Diel vertical migration, Plant stem, Oryza sativa, Ecotype, fungi, food and beverages, Oryza, Plant Transpiration, Cell Biology, General Medicine, Deepwater rice, Oxygen, Plant Leaves, Horticulture, 030104 developmental biology, Shoot, Elongation, 010606 plant biology & botany
Abstract: Deepwater rice has a remarkable shoot elongation response to partial submergence. Shoot elongation to maintain air-contact enables 'snorkelling' of O2 to submerged organs. Previous research has focused on partial submergence of deepwater rice. We tested the hypothesis that leaf gas films enhance internode O2 status and stem elongation of deepwater rice when completely submerged. Diel patterns of O2 partial pressure (pO2) were measured in internodes of deepwater rice when partially or completely submerged, and with or without gas films on leaves, for the completely submerged plants. We also took measurements for paddy rice. Deepwater rice elongated during complete submergence and the shoot tops emerged. Leaf gas films improved O2 entry during the night, preventing anoxia in stems, which is of importance for elongation of the submerged shoots. Expressions of O2 deprivation inducible genes were upregulated in completely submerged plants during the night, and more so when gas films were removed from the leaves. Diel O2 dynamics showed similar patterns in paddy and deepwater rice. We demonstrated that shoot tops in air enabled 'snorkelling' and increased O2 in internodes of both rice ecotypes; however, 'snorkelling' was achieved only by rapid shoot elongation by deepwater rice, but not by paddy rice.
Published: 2018

18. Stempedia: a weather-based model to explore and manage the risk of lentil Stemphylium blight disease

Author: Munsur Rahman, William Erskine, A. H. M. Mahfuzul Haque, Ashraf U. Ahmed, B Nessa, Al Imran Malik, Tapan K. Day, Moin U. Salam, and Subash Subedi
Subjects: 0106 biological sciences, food.ingredient, Stemphylium, business.industry, Risk aversion, Sowing, 04 agricultural and veterinary sciences, Plant Science, Biology, 01 natural sciences, Fungicide, Toxicology, food, Agronomy, Agriculture, Sunshine duration, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Blight, business, Cropping, 010606 plant biology & botany
Abstract: Lentil Stemphylium blight is a fungal disease threatening sustainable lentil-based cropping in South Asia including Bangladesh. A weather-based model ʻStempediaʼ was developed to understand the risk of the disease. Daily maximum temperature and sunshine hours are the two most important parameters of the model. When tested with field data from Bangladesh and Nepal, the model simulated the disease severity well both without (R 2 = 0.89, n = 17) and with (R 2 = 0.80, n = 18) fungicide application scenarios. As a result, Stempedia was subjected to experimentation to explore the risk and risk management options related to the disease under Bangladesh conditions. Taking Gazipur - a central regional district - as an example, the model identified that, predominantly, gradual reductions in sunshine hours (or, increased cloudiness) during the early part of the ‘disease susceptible window’ had increased the disease severity over the last 30 years. The model simulated Ishurdi, a north-western regional district, as more disease prone than Gazipur and Jessore, a south-eastern regional district. Stempedia simulated seasonal variability of the disease and predicted reduced severity with delayed sowing, the magnitude of which differed between regions. Stempedia also predicted financial returns with three foliar applications of an effective fungicide but this depended on the timing of application. The best financial return occurred with an early fungicide application, as soon as the disease appeared during initiation of flowering, followed by further application(s) if a disease-producing environment was expected. We conclude that the model has potential to assess regional and seasonal risks of this disease and to determine risk aversion by manipulating sowing time. This model can further be used to formulate the principle of foliar fungicide application to achieve financial gain.
Published: 2016

19. Rice leaf hydrophobicity and gas films are conferred by a wax synthesis gene (LGF1) and contribute to flood tolerance

Author: Yoshinao Mori, Ole Pedersen, Keisuke Nagai, Yuko Sasaki-Sekimoto, Nagao Hayashi, Takeshi Kuroha, Huangqi Qu, Hiroyuki Ohta, Al Imran Malik, Mie Shimojima, Timothy D. Colmer, Phung Danh Huan, Kousuke Shimazaki, Yusuke Kurokawa, Motoyuki Ashikari, Jun-Ichi Itoh, Atsushi Yoshimura, Saori Aiga, and Yosuke Toda
Subjects: 0106 biological sciences, 0301 basic medicine, Physiology, Mutant, Plant Science, Primary alcohol, Genes, Plant, Photosynthesis, 01 natural sciences, Plant Epidermis, Epicuticular wax, 03 medical and health sciences, Plant Proteins, Wax, Oryza sativa, Base Sequence, Chemistry, Genetic Complementation Test, fungi, food and beverages, Oryza, Adaptation, Physiological, Floods, Biosynthetic Pathways, Plant Leaves, Complementation, Horticulture, 030104 developmental biology, Waxes, visual_art, Mutation, visual_art.visual_art_medium, Gases, Hydrophobic and Hydrophilic Interactions, Function (biology), 010606 plant biology & botany
Abstract: Floods impede gas (O2and CO2) exchange between plants and the environment. A mechanism to enhance plant gas exchange under water comprises gas films on hydrophobic leaves, but the genetic regulation of this mechanism is unknown. We used a rice mutant (dripping wet leaf 7, drp7) which does not retain gas films on leaves, and its wild-type (Kinmaze), in gene discovery for this trait. Gene complementation was tested in transgenic lines. Functional properties of leaves as related to gas film retention and underwater photosynthesis were evaluated. Leaf Gas Film 1 (LGF1) was identified as the gene determining leaf gas films. LGF1 regulates C30 primary alcohol synthesis, which is necessary for abundant epicuticular wax platelets, leaf hydrophobicity and gas films on submerged leaves. This trait enhanced underwater photosynthesis 8.2-fold and contributes to submergence tolerance. Gene function was verified by a complementation test of LGF1 expressed in the drp7 mutant background, which restored C30 primary alcohol synthesis, wax platelet abundance, leaf hydrophobicity, gas film retention, and underwater photosynthesis. The discovery of LGF1 provides an opportunity to better understand variation amongst rice genotypes for gas film retention ability and to target various alleles in breeding for improved submergence tolerance for yield stability in flood-prone areas.
Published: 2018

20. Changes in gene expression during germination reveal pea genotypes with either 'quiescence' or 'escape' mechanisms of waterlogging tolerance

Author: Md Shahin Uz, Zaman, Al Imran, Malik, William, Erskine, and Parwinder, Kaur
Subjects: Gene Expression Regulation, Plant, Stress, Physiological, Gene Expression Profiling, Peas, Water, Germination, Transcriptome, Adaptation, Physiological
Abstract: Waterlogging causes germination failure in pea (Pisum sativum L.). Three genotypes (BARI Motorshuti-3, Natore local-2 [NL-2], and Kaspa) contrasting in ability to germinate in waterlogged soil were exposed to different durations of waterlogging. Whole genome RNAseq was employed to capture differentially expressing genes. The ability to germinate in waterlogged soil was associated with testa colour and testa membrane integrity as confirmed by electrical conductivity measurements. Genotypes Kaspa and NL-2 displayed different mechanisms of tolerance. In Kaspa, an energy conserving strategy was indicated by a strong upregulation of tyrosine protein kinsase and down regulation of linoleate 9S-lipoxygenase 5, a fat metabolism gene. In contrast, a faster energy utilization strategy was suggested in NL-2 by the marked upregulation of a subtilase family protein and peroxisomal adenine nucleotide carrier 2, a fat metabolizing gene. Waterlogging susceptibility in germinating seeds of genotype BARI Motorshuti-3 was linked to upregulation of a kunitz-type trypsin/protease inhibitor that blocks protein metabolism and may lead to excessive lipid metabolism and the membrane leakage associated with waterlogging damage. Pathway analyses based on gene ontologies showed seed storage protein metabolism as upregulated in tolerant genotypes and downregulated in the sensitive genotype. Understanding the tolerance mechanism provides a platform to breed for adaptation to waterlogging stress at germination in pea.
Published: 2017

21. Relay sowing of lentil (Lens culinaris subsp. culinaris) to intensify rice-based cropping

Author: M.S. Zaman, William Erskine, Al Imran Malik, M. O. Ali, Ken Flower, and Munsur Rahman
Subjects: 0106 biological sciences, Sowing, 04 agricultural and veterinary sciences, Biology, 01 natural sciences, Agronomy, Sufficient time, 040103 agronomy & agriculture, Genetics, 0401 agriculture, forestry, and fisheries, Animal Science and Zoology, Cultivar, Agronomy and Crop Science, Cropping, Rice crop, Legume, 010606 plant biology & botany
Abstract: SUMMARYThe cropping systems of the Eastern Gangetic Plains of Bangladesh, India and Nepal are based on rice. There is a scope to intensify such systems through diversification with lentil, the most popular food legume. Two strategies were evaluated to fit lentil into the short fallow between successive monsoonal (i.e., T. aman) and pre-monsoonal (aus) or irrigated rice (boro) crop. These were early-flowering sole-cropped lentil and relay-sown lentil into rice. Firstly, 18 early-flowering lentil lines at three contrasting sowing dates were tested over two seasons on a research station at Ishurdi in Bangladesh. Secondly, relay sowing was evaluated at the same location with six early-flowering lines and two control cultivars in two seasons. It was also assessed on ten farms in Western Bangladesh, comparing relay with sole cropping over 3 years. Flowering in the early-flowering lentil lines was consistently 9–17 days earlier, than the control cultivars, but they did not achieve an economic yield (
Published: 2015

22. Differential nitrogen supply causes large variability in photosynthetic traits in wheat germplasm

Author: Zed Rengel, Al Imran Malik, and Szilvia Veres
Subjects: 0106 biological sciences, Germplasm, Stomatal conductance, Chlorophyll content, chemistry.chemical_element, Növénytermesztési és kertészeti tudományok, 04 agricultural and veterinary sciences, Plant Science, Biology, Photosynthesis, 01 natural sciences, Nitrogen, chemistry, Agronomy, Anthesis, Co2 concentration, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Agrártudományok, Agronomy and Crop Science, Chlorophyll fluorescence, 010606 plant biology & botany
Abstract: Increased food production and enhanced sustainability depend on improving nitrogen-use efficiency (NUE) of crops. Breeding for enhanced NUE can take advantage of doubled-haploid populations derived from parents differing in the trait. This study evaluated variation in photosynthetic parameters at various growth stages in 43 wheat genotypes (parents of the existing doubled-haploid mapping populations) under optimal and low (one-quarter of the optimal) N supply. For relative chlorophyll content, the genotype × N treatment interaction was significant at tillering, booting, pre-anthesis and anthesis. Genotypes with small differences in relative chlorophyll content between the two N supplies were CD87 at tillering and pre-anthesis, and Batavia at anthesis. Potential photochemical activity (Fv/Fm) was measured at tillering and anthesis. The genotype × N treatment interaction was significant in both growth stages. Based on net photosynthesis, stomatal conductance and intrinsic water usez efficiency, there was variable potential of the genotypes to cope with low N supply; significant differences were found among genotypes at ambient CO2 and between N treatments at elevated CO2 concentration (2000 µmol mol–1) for all three parameters. Based on all studied parameters, a dissimilarity matrix was constructed, separating the 43 genotypes into four groups. Group 2 comprised 15 of the genotypes (Batavia, Beaver, Calingiri, CD87, Frame, Krichauff, Neepawa, Soissons, Spear, Stiletto, WAWHT2036, WAWHT2074, Westonia, Wilgoyne, Yitpi), characterised by small differences in relative chlorophyll content and Fv/Fm caused by different N supply at tillering and anthesis. These genotypes therefore appear to have relative tolerance to low N supply and a potential to be used in discerning the molecular basis of tolerance to low N supply.
Published: 2017

23. Cassava breeding and agronomy in Asia: 50 years of history and future directions.

Author: Al Imran Malik, Pasajee Kongsil, Vũ Anh Nguyễn, Wenjun Ou, Sholihin, Srean, Pao, Sheela, M. N., López-Lavalle, Luis Augusto Becerra, Yoshinori Utsumi, Cheng Lu, Piya Kittipadakul, Hữu Hỷ Nguyễn, Ceballos, Hernan, Trọng Hiển Nguyễn, Gomez, Michael Selvaraj, Pornsak Aiemnaka, Labarta, Ricardo, Songbi Chen, Suwaluk Amawan, and Sok, Sophearith
Subjects: *CASSAVA, *AGRONOMY, *MOSAIC diseases, *BREEDING, *AGRICULTURAL research, *TECHNOLOGICAL innovations
Abstract: In Asia, cassava (Manihot esculenta) is cultivated by more than 8 million farmers, driving the rural economy of many countries. The International Center for Tropical Agriculture (CIAT), in partnership with national agricultural research institutes (NARIs), instigated breeding and agronomic research in Asia, 1983. The breeding program has successfully released high-yielding cultivars resulting in an average yield increase from 13.0 t ha-1 in 1996 to 21.3 t ha-1 in 2016, with significant economic benefits. Following the success in increasing yields, cassava breeding has turned its focus to higher-value traits, such as waxy cassava, to reach new market niches. More recently, building resistance to invasive pests and diseases has become a top priority due to the emergent threat of cassava mosaic disease (CMD). The agronomic research involves driving profitability with advanced technologies focusing on better agronomic management practices thereby maintaining sustainable production systems. Remote sensing technologies are being tested for trait discovery and large-scale field evaluation of cassava. In summary, cassava breeding in Asia is driven by a combination of food and market demand with technological innovations to increase the productivity. Further, exploration in the potential of data-driven agriculture is needed to empower researchers and producers for sustainable advancement. [ABSTRACT FROM AUTHOR]
Published: 2020
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24. A major locus involved in the formation of the radial oxygen loss barrier in adventitious roots of teosinte Zea nicaraguensis is located on the short-arm of chromosome 3

Author: Al Imran Malik, Saori Sato, Hirokazu Takahashi, Timothy D. Colmer, Kohtaro Watanabe, Shunsaku Nishiuchi, Yoshiro Mano, Fumie Omori, and Mikio Nakazono
Subjects: 0106 biological sciences, 0301 basic medicine, Physiology, Introgression, Plant Science, Poaceae, 01 natural sciences, Lignin, Plant Roots, Chromosomes, Plant, Permeability, Aerenchyma, 03 medical and health sciences, Suberin, Exodermis, Botany, biology, Periodic Acid, food and beverages, Phytotoxin, biology.organism_classification, Physical Chromosome Mapping, Zea nicaraguensis, Lipids, Apoplast, Oxygen, 030104 developmental biology, Genetic Loci, Chromosomal region, 010606 plant biology & botany
Abstract: A radial oxygen loss (ROL) barrier in roots of waterlogging-tolerant plants promotes oxygen movement via aerenchyma to the root tip, and impedes soil phytotoxin entry. The molecular mechanism and genetic regulation of ROL barrier formation are largely unknown. Zea nicaraguensis, a waterlogging-tolerant wild relative of maize (Zea mays ssp. mays), forms a tight ROL barrier in its roots when waterlogged. We used Z. nicaraguensis chromosome segment introgression lines (ILs) in maize (inbred line Mi29) to elucidate the chromosomal region involved in regulating root ROL barrier formation. A segment of the short-arm of chromosome 3 of Z. nicaraguensis conferred ROL barrier formation in the genetic background of maize. This chromosome segment also decreased apoplastic solute permeability across the hypodermis/exodermis. However, the IL and maize were similar for suberin staining in the hypodermis/exodermis at 40 mm and further behind the root tip. Z. nicaraguensis contained suberin in the hypodermis/exodermis at 20 mm and lignin at the epidermis. The IL with ROL barrier, however, did not contain lignin in the epidermis. Discovery of the Z. nicaraguensis chromosomal region responsible for root ROL barrier formation has improved knowledge of this trait and is an important step towards improvement of waterlogging tolerance in maize.
Published: 2016
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25. Differential nitrogen-use efficiency in wheat parents of doubled-haploid mapping populations

Author: Al Imran Malik, Zed Rengel, and Szilvia Veres
Subjects: 0106 biological sciences, Plant growth, food and beverages, Soil Science, chemistry.chemical_element, Greenhouse, Növénytermesztési és kertészeti tudományok, 04 agricultural and veterinary sciences, Plant Science, Biology, 01 natural sciences, Nitrogen, Agronomy, chemistry, Genotype, 040103 agronomy & agriculture, Doubled haploidy, 0401 agriculture, forestry, and fisheries, Grain yield, Agrártudományok, Cultivar, 010606 plant biology & botany
Abstract: The modern wheat cultivars have been selected for non-limiting nitrogen (N) input situations and therefore require large amounts of fertiliser N. The relatively high price of fossil fuels increases the cost of N fertilisers, putting pressure on wheat farmers. Doubled-haploid mapping populations can lead to identification of specific loci that might be useful in marker-assisted breeding for increased N-use efficiency. Forty-one mostly Australian genotypes of wheat (Triticum aestivum L.) (parents of existing doubled-haploid mapping populations) were grown to maturity in soil in a glasshouse. Two N treatments were tested: optimal (685 mg N pot−1) and low (171 mg N pot−1). Plant growth was significantly lower in most genotypes (with the exception of Mendos and Gamenya) at low compared with optimal N supply. Leaf-6 extension rate in the low-N treatment was on average 76 % of that in the optimal N treatment. Grain yield was significantly affected by the treatment x genotype interaction, ranging from 2.5 (genotype WAWHT2046) to 7.0 g per plant (genotype Mendos) under low N supply, and from 3.8 (genotype Wilgoyne) to 10.1 g per plant (genotype Lang) under optimal N supply. Based on responses to differential N supply, Mendos and Wilgoyne ranked as N-use efficient. In contrast, ten genotypes (Cadoux, Frame, Gamenya, Halberd, Janz, Lang, Neepawa, Spear, Sunco and Tasman) were ranked as N-use inefficient. The old genotype Gamenya was relatively N-use efficient, but had a poor response to N fertilisation. Amery and Janz responded similarly to Gamenya. Even though genotypes used in the current study were bred mostly for yield, a range of differential responses to the low- and optimal-N treatments implies that efficient use of N at low supply and efficient response to N fertilisation might have been inadvertently selected for in some breeding programmes, suggesting a potential for breeding wheat cultivars with improved N-use efficiency.
Published: 2016

26. Enhanced formation of aerenchyma and induction of a barrier to radial oxygen loss in adventitious roots of Zea nicaraguensis contribute to its waterlogging tolerance as compared with maize (Zea mays ssp. mays)

Author: Timothy D. Colmer, Tomomi Abiko, Lukasz Kotula, Mikio Nakazono, Al Imran Malik, and Katsuhiro Shiono
Subjects: Rhizosphere, biology, Physiology, Suberin, Exodermis, Botany, Shoot, Oxygen transport, Plant Science, biology.organism_classification, Hydroponics, Zea nicaraguensis, Aerenchyma
Abstract: Enhancement of oxygen transport from shoot to root tip by the formation of aerenchyma and also a barrier to radial oxygen loss (ROL) in roots is common in waterlogging- tolerant plants.Zea nicaraguensis (teosinte),a wild relative of maize (Zea mays ssp. mays), grows in waterlogged soils. We investigated the formation of aerenchyma and ROL barrier induction in roots of Z. nicaraguensis, in compari- son with roots of maize (inbred line Mi29), in a pot soil system and in hydroponics. Furthermore, depositions of suberin in the exodermis/hypodermis and lignin in the epi- dermis of adventitious roots of Z. nicaraguensis and maize grown in aerated or stagnant deoxygenated nutrient solu- tion were studied. Growth of maize was more adversely affected by low oxygen in the root zone (waterlogged soil or stagnant deoxygenated nutrient solution) compared with Z. nicaraguensis. In stagnant deoxygenated solution, Z. nicaraguensis was superior to maize in transporting oxygen from shoot base to root tip due to formation of larger aerenchyma and a stronger barrier to ROL in adventitious roots. The relationships between the ROL barrier formation and suberin and lignin depositions in roots are discussed. The ROL barrier, in addition to aerenchyma, would contribute to the waterlogging tolerance of Z. nicaraguensis.
Published: 2012

27. Transfer of the barrier to radial oxygen loss in roots of Hordeum marinum to wheat (Triticum aestivum ): evaluation of four H. marinum -wheat amphiploids

Author: Al Imran Malik, Timothy D. Colmer, and A. K. M. R. Islam
Subjects: Hordeum marinum, Physiology, chemistry.chemical_element, Plant Science, Plant Roots, Oxygen, Aerenchyma, Soil, Dry weight, Biomass, Triticum, Hybrid, biology, Chinese spring, Hordeum, biology.organism_classification, Cell Hypoxia, Culture Media, Solutions, chemistry, Agronomy, Shoot, Hybridization, Genetic, Porosity, Plant Shoots
Abstract: • Wide hybridization of waterlogging-tolerant Hordeum marinum with wheat (Triticum aestivum) to produce an amphiploid might be one approach to improve waterlogging tolerance in wheat. • Growth, root aerenchyma and porosity, and radial oxygen loss (ROL) along roots were measured in four H. marinum-wheat amphiploids and their parents (four accessions of H. marinum and Chinese Spring wheat) in aerated or stagnant nutrient solution. A soil experiment was also conducted. • Hordeum marinum maintained shoot dry mass in stagnant nutrient solution, whereas the growth of wheat was markedly reduced (40% of aerated control). Two of the four amphiploids were more tolerant than wheat (shoot dry masses of 59-72% of aerated controls). The porosity of adventitious roots when in stagnant solution was higher in H. marinum (19-25%) and the four amphiploids (20-24%) than in wheat (16%). In stagnant solution, adventitious roots of H. marinum formed a strong ROL barrier in basal zones, whereas, in wheat, the barrier was weak. Two amphiploids formed a strong ROL barrier and two formed a moderate barrier when in stagnant solution. • This study demonstrates the transfer of higher root porosity and a barrier to ROL from H. marinum to wheat through wide hybridization and the production of H. marinum-wheat amphiploids.
Published: 2010

28. Salt tolerance and avoidance mechanisms at germination of annual pasture legumes: importance for adaptation to saline environments

Author: Timothy D. Colmer, Al Imran Malik, M. Stockdale, and Phillip Nichols
Subjects: Trifolium subterraneum, geography, Soil salinity, geography.geographical_feature_category, biology, Soil Science, Plant Science, biology.organism_classification, Pasture, Salinity, Agronomy, Germination, Imbibition, Medicago polymorpha, Legume
Abstract: Mechanisms for tolerance and avoidance of salinity at germination were examined in five self-regenerating annual pasture legumes of Mediterranean origin (Medicago polymorpha, Melilotus siculus, Trifolium subterraneum, T. michelianum and T. tomentosum). The maximum NaCl concentrations, for which no reduction in germination percentage occurred, were 300 mM for M. siculus, 240 mM for M. polymorpha and 120 mM for T. michelianum, T. subterraneum and T. tomentosum. Following 21 days exposure to 300 mM NaCl, imbibed seeds of T. subterraneum showed reduced germinability upon transfer to non-saline solution, whereas those of the four other species recovered full germinability. Following exposure to 600 mM NaCl, however, only T. michelianum and Melilotus siculus had some degree of recovery, with 38% and 31% germinability, respectively. Na+ in imbibed seed tissues of all species increased markedly with increasing NaCl concentration, while K+ decreased in all but Melilotus siculus. Seed coat impermeability (‘hard seeds’) acted as protection against the toxic effects of salinity. Melilotus siculus, Medicago polymorpha and T. tomentosum showed a delay in hard-seed breakdown (‘seed softening’) over the summer–autumn period, compared to T. subterraneum and T. michelianum, which acts to defer germination until soil surface salinity levels are likely to be lower. These three species also had higher levels of residual hard seeds. The results from this study support field observations that Melilotus siculus and Medicago polymorpha are the best adapted annual pasture legumes for highly saline soils in southern Australia, T. tomentosum and T. michelianum have some adaptation to moderately and mildly saline soils, respectively, whereas T. subterraneum has no adaptive traits for even mildly saline environments. A model for annual legume germination on saline land in southern Australia is also presented.
Published: 2008

29. Salt tolerance in a Hordeum marinum-Triticum aestivum amphiploid, and its parents

Author: S. Islam, Timothy D. Colmer, A. K. M. R. Islam, and Al Imran Malik
Subjects: Hordeum marinum, Ploidies, biology, Physiology, Vegetative reproduction, Sodium, Hordeum, Plant Science, Sodium Chloride, biology.organism_classification, Plant Leaves, Salinity, Horticulture, Dry weight, Halophyte, Seeds, Botany, Potassium, Poaceae, Proline, Chlorine, Crosses, Genetic, Triticum
Abstract: Growth, grain production, and physiological traits were evaluated for Hordeum marinum, Triticum aestivum (cv. Chinese Spring), and a H. marinum-T. aestivum amphiploid, when exposed to NaCl treatments in a nutrient solution. H. marinum was more salt tolerant than T. aestivum and the amphiploid was intermediate, both for vegetative growth and relative grain production. H. marinum was best able to 'exclude' Na(+) and Cl(-), particularly at high external NaCl. At 300 mM NaCl, concentrations of Na(+) (153 micromol g(-1) dry mass) and Cl(-) (75 micromol g(-1) dry mass) in the youngest fully-expanded leaf blade of H. marinum were, respectively, only 7% and 4% of those in T. aestivum; and in the amphiploid the Na(+) and Cl(-) concentrations were 39% and 36% of those in T. aestivum. Glycinebetaine and proline concentrations in the youngest fully-expanded leaf blade of plants exposed to 200 mM NaCl were highest in H. marinum (128 and 60 micromol g(-1) dry mass, respectively), lowest in T. aestivum (85 and 37 micromol g(-1) dry mass), and intermediate in the amphiploid (108 and 54 micromol g(-1) dry mass). Thus, salt tolerance of H. marinum was expressed in the H. marinum-T. aestivum amphiploid.
Published: 2007

30. Seed germination and seedling development in response to submergence in tree species of the Central Amazonian floodplains

Author: Maria Teresa Fernandez PIEDADE, Susana Chamorro, Ruben Heleno, William Erskine, AL IMRAN MALIK, Cristiane Silva Ferreira, and Augusto Cesar Franco
Subjects: Floodplain, Submersion (coastal management), Plant Science, Tropismo, Sementes, Carbohydrate reserves, Botany, Colonization, Ecosystem, flood tolerance, Research Articles, cell wall storage polysaccharides, geography, geography.geographical_feature_category, biology, tropism, Germinação, food and beverages, biology.organism_classification, seed germination in water, Amazônia, Agronomy, Seedling, Germination, Soil water, Epigeal, submergence tolerance
Abstract: This study shows that Central Amazonian floodplain trees can cope with long-term flooding during the early life-history stages. Seven of the eight studied species germinated and formed seedlings under water that endured submersion without any apparent injury for periods of 20 to 115 days, depending on the species. Only one of the seven did not survive re-exposure to air. The ability to germinate and form seedlings in water that subsequently are able to thrive in aerated soils would allow the most use of the short terrestrial phase available for seedling establishment in the lower portions of the flood-level gradient., Successful germination and seedling establishment are crucial steps for maintenance and expansion of plant populations and recovery from perturbations. Every year the Amazon River and its tributaries overflow and flood the adjacent forest, exerting a strong selective pressure on traits related to seedling recruitment. We examined seed characteristics, stored reserves, germination, seedling development and survival under water of eight representative tree species from the lower portions of the flood-level gradient to identify adaptive strategies that contribute to their regeneration in this extreme ecosystem. Submerged seedlings were assessed for longevity and survival until they showed symptoms of injury. At this point, the remaining healthy seedlings were planted in unsaturated soil to monitor recovery after re-exposure to air over 30 days. All small (seed mass ≤0.17 g) seeds had epigeal phanerocotylar-type germination, a trait that would allow plants to acquire light and CO2 in the shortest time. Cell wall storage polysaccharide was a major component of all seeds, suggesting plant investment in structural reserves. Seven of the eight species germinated and formed healthy seedlings under water that endured submersion without any apparent injury for periods of 20–115 days, depending on the species. Seedlings of some species changed the direction of root growth and grew towards the surface of the water, which might have increased the uptake of oxygen to the tissues. Only one of the seven species did not survive re-exposure to air. Species able to germinate and produce seedlings under submersion, which subsequently are able to establish in aerated soils, would have more time available for terrestrial growth. This is critical for colonization of lower portions of the flood-level gradient where establishment is constrained by the short terrestrial phase that precedes the next flood.
Published: 2015

31. Tolerance of three grain legume species to transient waterlogging

Author: William Erskine, Tadhamin Iskander Ailewe, and Al Imran Malik
Subjects: Chlorophyll, porosity, Vegetative reproduction, Crop yield, fungi, food and beverages, SPECIAL ISSUE: Plant Responses to Low-Oxygen Environments, Plant Science, legume, Biology, biology.organism_classification, intra-species variation, waterlogging, chemistry.chemical_compound, Agronomy, chemistry, Dry weight, Germination, Shoot, Lathyrus, Legume, Research Articles
Abstract: Crop production can be limited by soil waterlogging. Tolerance to waterlogging can vary between and within species. This study quantified tolerance to soil waterlogging in two divergent genotypes of pea (Pisum sativum), two of lentil (Lens culinaris) and a grasspea (Lathyrus sativus) control at germination and during vegetative growth. Soil waterlogging at 10 mm depth had no significant effect on shoot and root dry mass after 14 days. Significant genetic variation in both pea and lentil in tolerance to waterlogging after germination and subsequent recovery was evident. Screening of additional pea and lentil germplasm for waterlogging conditions is clearly warranted., Waterlogging reduces the yield of food crops. Tolerance to waterlogging could vary between and within species. This study aimed to quantify tolerance to soil waterlogging in two divergent genotypes of pea (Pisum sativum), two of lentil (Lens culinaris) and a grasspea (Lathyrus sativus) control at germination and during vegetative growth. Following germination, seeds were grown for 14 days in soil waterlogged with the water table 10 mm below the surface, and then by draining the pots and allowing to recover for 21 days—to be compared with 35 days of continuous waterlogging. In both pea and lentil, the pair of genotypes contrasted widely with large-seeded pea genotype Kaspa and lentil genotype Nugget showing higher (2-fold) root porosity and less effect on shoot nitrogen content under waterlogging than the other genotypes (NPE and ATC). During recovery, the same two genotypes—Kaspa pea and Nugget lentil—also recovered better than their smaller-seeded species pairs. Soil waterlogging at 10 mm depth had no significant effect on shoot and root dry mass after 14 days. Root penetration into waterlogged soil was restricted to ∼100 mm depth and its distribution altered for pea and lentil genotypes but not for grasspea. Within the small sample studied, we demonstrated a significant genetic variation in both pea and lentil in tolerance to waterlogging after germination and subsequent recovery for the first time. Screening of additional pea and lentil germplasm for waterlogging conditions is clearly warranted.
Published: 2014

32. Aerenchyma formation and radial O2loss along adventitious roots of wheat with only the apical root portion exposed to O2deficiency

Author: Hans Lambers, M. Schortemeyer, Al Imran Malik, and Timothy D. Colmer
Subjects: Nutrient solution, Physiology, Shoot, Botany, Plant Science, Soil surface, Root system, Biology, Aerenchyma formation, Aerenchyma, Waterlogging (agriculture)
Abstract: This study investigated aerenchyma formation and function in adventitious roots of wheat (Triticum aestivum L.) when only a part of the root system was exposed to O 2 deficiency. Two experimental systems were used: (1) plants in soil waterlogged at 200 mm below the surface; or (2) a nutrient solution system with only the apical region of a single root exposed to deoxygenated stagnant agar solution with the remainder of the root system in aerated nutrient solution. Porosity increased two- to three-fold along the entire length of the adventitious roots that grew into the water-saturated zone 200 mm below the soil surface, and also increased in roots that grew in the aerobic soil above the water-saturated zone. Likewise, adventitious roots with only the tips growing into deoxygenated stagnant agar solution developed aerenchyma along the entire main axis. Measurements of radial O 2 loss (ROL), taken using root-sleeving O 2 electrodes, showed this aerenchyma was functional in conducting O 2 . The ROL measured near tips of intact roots in deoxygenated stagnant agar solution, while the basal part of the root remained in aerated solution, was sustained when the atmosphere around the shoot was replaced by N 2 . This illustrates the importance of O 2 diffusion into the basal regions of roots within an aerobic zone, and the subsequent longitudinal movement of O 2 within the aerenchyma, to supply O 2 to the tip growing in an O 2 deficient zone.
Published: 2003

33. Short-term waterlogging has long-term effects on the growth and physiology of wheat

Author: Hans Lambers, Timothy D. Colmer, Tim L. Setter, Al Imran Malik, and Marcus Schortemeyer
Subjects: Physiology, fungi, food and beverages, Tiller (botany), Plant Science, Root system, Biology, Apex (geometry), Agronomy, Shoot, Root mass, Poaceae, Drainage, Waterlogging (agriculture)
Abstract: Summary • The effect of different durations of waterlogging and subsequent drainage is described for 3-wk-old wheat (Triticum aestivum) plants. • In a pot experiment, plants were subjected to waterlogging to the soil surface for 0, 3, 7, 14, 21 or 28 d, and then drained to allow recovery for up to 25 d. • During waterlogging, the seminal root system stopped growing. Adventitious roots grew to a maximum length of c. 150 mm. Leaf nitrogen concentration was severely decreased by waterlogging. When waterlogged pots were drained, seminal root mass did not recover to control values, even when waterlogging lasted only 3 or 7 d, due to death of existing apices and no initiation of new lateral roots. By contrast, adventitious roots resumed elongation after drainage. By the end of the experiment, shoot mass remained two- to threefold lower in plants from all waterlogged treatments compared with continuously drained controls, due to lower tiller numbers and shorter final leaf lengths in previously waterlogged plants. • The results demonstrate that even short periods (as little as 3 d) of waterlogging have considerable long-term effects on the growth of young wheat plants.
Published: 2002

34. Microarray analysis of laser-microdissected tissues indicates the biosynthesis of suberin in the outer part of roots during formation of a barrier to radial oxygen loss in rice (Oryza sativa)

Author: Takaki Yamauchi, Timothy D. Colmer, Bijayalaxmi Mohanty, So Yamazaki, Al Imran Malik, Yoshiaki Nagamura, Katsuhiro Shiono, Naoko K. Nishizawa, Nobuhiro Tsutsumi, and Mikio Nakazono
Subjects: Physiology, Microarray analysis techniques, Oxygen transport, food and beverages, Promoter, Oryza, Plant Science, Biology, Lignin, Lipids, Plant Roots, WRKY protein domain, Aerenchyma, Oxygen, Biochemistry, Suberin, Cell Wall, Gene expression, MYB, Microdissection, Oligonucleotide Array Sequence Analysis
Abstract: Internal aeration is crucial for root growth in waterlogged soil. A barrier to radial oxygen loss (ROL) can enhance long-distance oxygen transport via the aerenchyma to the root tip; a higher oxygen concentration at the apex enables root growth into anoxic soil. The ROL barrier is formed within the outer part of roots (OPR). Suberin and/or lignin deposited in cell walls are thought to contribute to the barrier, but it is unclear which compound is the main constituent. This study describes gene expression profiles during ROL barrier formation in rice roots to determine the relative responses of suberin and/or lignin biosyntheses for the barrier. OPR tissues were isolated by laser microdissection and their transcripts were analysed by microarray. A total of 128 genes were significantly up- or downregulated in the OPR during the barrier formation. Genes associated with suberin biosynthesis were strongly upregulated, whereas genes associated with lignin biosynthesis were not. By an ab initio analysis of the promoters of the upregulated genes, the putative cis-elements that could be associated with transcription factors, WRKY, AP2/ERF, NAC, bZIP, MYB, CBT/DREB, and MADS, were elucidated. They were particularly associated with the expression of transcription factor genes containing WRKY, AP2, and MYB domains. A semiquantitative reverse-transcription PCR analysis of genes associated with suberin biosynthesis (WRKY, CYP, and GPAT) confirmed that they were highly expressed during ROL barrier formation. Overall, these results suggest that suberin is a major constituent of the ROL barrier in roots of rice.
Published: 2014

35. Physiology of Nitrogen-Use Efficiency

Author: Al Imran Malik and Zed Rengel
Subjects: Transcriptome, chemistry, business.industry, Botany, chemistry.chemical_element, Genetically modified crops, Biology, business, Nitrogen, Biotechnology
Published: 2013

36. Enhanced formation of aerenchyma and induction of a barrier to radial oxygen loss in adventitious roots of Zea nicaraguensis contribute to its waterlogging tolerance as compared with maize (Zea mays ssp. mays)

Author: Tomomi, Abiko, Lukasz, Kotula, Katsuhiro, Shiono, Al Imran, Malik, Timothy David, Colmer, and Mikio, Nakazono
Subjects: Oxygen, Solutions, Soil, Water, Adaptation, Physiological, Lignin, Lipids, Plant Roots, Zea mays, Plant Shoots
Abstract: Enhancement of oxygen transport from shoot to root tip by the formation of aerenchyma and also a barrier to radial oxygen loss (ROL) in roots is common in waterlogging-tolerant plants. Zea nicaraguensis (teosinte), a wild relative of maize (Zea mays ssp. mays), grows in waterlogged soils. We investigated the formation of aerenchyma and ROL barrier induction in roots of Z. nicaraguensis, in comparison with roots of maize (inbred line Mi29), in a pot soil system and in hydroponics. Furthermore, depositions of suberin in the exodermis/hypodermis and lignin in the epidermis of adventitious roots of Z. nicaraguensis and maize grown in aerated or stagnant deoxygenated nutrient solution were studied. Growth of maize was more adversely affected by low oxygen in the root zone (waterlogged soil or stagnant deoxygenated nutrient solution) compared with Z. nicaraguensis. In stagnant deoxygenated solution, Z. nicaraguensis was superior to maize in transporting oxygen from shoot base to root tip due to formation of larger aerenchyma and a stronger barrier to ROL in adventitious roots. The relationships between the ROL barrier formation and suberin and lignin depositions in roots are discussed. The ROL barrier, in addition to aerenchyma, would contribute to the waterlogging tolerance of Z. nicaraguensis.
Published: 2012

37. Tolerance of Hordeum marinum accessions to O2 deficiency, salinity and these stresses combined

Author: Timothy D. Colmer, Jeremy P. English, and Al Imran Malik
Subjects: Wild species, Hordeum marinum, Salinity, Plant Science, Sodium Chloride, Plant Roots, Aerenchyma, Chlorides, Stress, Physiological, Botany, Databases, Genetic, Triticeae, biology, Abiotic stress, Sodium, Australia, food and beverages, Hordeum, Articles, biology.organism_classification, Adaptation, Physiological, Oxygen, Plant Leaves, Solutions, Agronomy, Shoot, Potassium, Porosity
Abstract: When root-zone O(2) deficiency occurs together with salinity, regulation of shoot ion concentrations is compromised even more than under salinity alone. Tolerance was evaluated amongst 34 accessions of Hordeum marinum, a wild species in the Triticeae, to combined salinity and root-zone O(2) deficiency. Interest in H. marinum arises from the potential to use it as a donor for abiotic stress tolerance into wheat.Two batches of 17 H. marinum accessions, from (1) the Nordic Gene Bank and (2) the wheat belt of Western Australia, were exposed to 0.2 or 200 mol m(-3) NaCl in aerated or stagnant nutrient solution for 28-29 d. Wheat (Triticum aestivum) was included as a sensitive check species. Growth, root porosity, root radial O(2) loss (ROL) and leaf ion (Na(+), K(+), Cl(-)) concentrations were determined.Owing to space constraints, this report is focused mainly on the accessions from the Nordic Gene Bank. The 17 accessions varied in tolerance; relative growth rate was reduced by 2-38 % in stagnant solution, by 8-42 % in saline solution (aerated) and by 39-71 % in stagnant plus saline treatment. When in stagnant solution, porosity of adventitious roots was 24-33 %; salinity decreased the root porosity in some accessions, but had no effect in others. Roots grown in stagnant solution formed a barrier to ROL, but variation existed amongst accessions in apparent barrier 'strength'. Leaf Na(+) concentration was 142-692 micromol g(-1) d. wt for plants in saline solution (aerated), and only increased to 247-748 micromol g(-1) d. wt in the stagnant plus saline treatment. Leaf Cl(-) also showed only small effects of stagnant plus saline treatment, compared with saline alone. In comparison with H. marinum, wheat was more adversely affected by each stress alone, and particularly when combined; growth reductions were greater, adventitious root porosity was 21 %, it lacked a barrier to ROL, leaf K(+) declined to lower levels, and leaf Na(+) and Cl(-) concentrations were 3.1-9-fold and 2.8-6-fold higher, respectively, in wheat.Stagnant treatment plus salinity reduced growth more than salinity alone, or stagnant alone, but some accessions of H. marinum were still relatively tolerant of these combined stresses, maintaining Na(+) and Cl(-) 'exclusion' even in an O(2)-deficient, saline rooting medium.
Published: 2008

38. Submergence tolerance in Hordeum marinum: dissolved CO2 determines underwater photosynthesis and growth

Author: Ole Pedersen, Al Imran Malik, and Timothy D. Colmer
Subjects: Ecophysiology, Hordeum marinum, ved/biology, ved/biology.organism_classification_rank.species, Plant Science, Biology, biology.organism_classification, Photosynthesis, Aerenchyma, Agronomy, Aquatic plant, Shoot, Terrestrial plant, Agronomy and Crop Science, Waterlogging (agriculture)
Abstract: Floodwaters differ markedly in dissolved CO2, yet the effects of CO2 on submergence responses of terrestrial plants have rarely been examined. The influence of dissolved CO2 on underwater photosynthesis and growth was evaluated for three accessions of the wetland plant Hordeum marinum Huds. All three accessions tolerated complete submergence, but only when in CO2 enriched floodwater. Plants submerged for 7 days in water at air equilibrium (18 µM CO2) suffered loss of biomass, whereas those with 200 µM CO2 continued to grow. Higher underwater net photosynthesis at 200 µM CO2 increased by 2.7- to 3.2-fold sugar concentrations in roots of submerged plants, compared with at air equilibrium CO2. Leaf gas films enhancing gas exchange with floodwater, lack of a shoot elongation response conserving tissue sugars and high tissue porosity (24–31% in roots) facilitating internal O2 movement, would all contribute to submergence tolerance in H. marinum. The present study demonstrates that dissolved CO2 levels can determine submergence tolerance of terrestrial plants. So, submergence experiments should be conducted with defined CO2 concentrations and enrichment might be needed to simulate natural environments and, thus, provide relevant plant responses.
Published: 2010

39. Tolerance of combined salinity and O2 deficiency in Hordeum marinum accessions from the grain-belt of Western Australia

Author: AL IMRAN MALIK, English, J. P., Kelly Shepherd, Islam, A. K. M. R., and Timothy Colmer

40. Changes in physiological and morphological traits of roots and shoots of wheat in response to different depths of waterlogging

Author: Hans Lambers, Timothy D. Colmer, Marcus Schortemeyer, and Al Imran Malik
Subjects: Ecophysiology, Stomatal conductance, fungi, food and beverages, Plant Science, Biology, Field capacity, Agronomy, Relative growth rate, Soil water, Shoot, Poaceae, Agronomy and Crop Science, Waterlogging (agriculture)
Abstract: The growth reduction of wheat (Triticum aestivum L.) during and after waterlogging stress depends on the depth of water from the soil surface. In a pot experiment with 3-week-old plants, soil was waterlogged for 14 d at the surface, or at 100 or 200 mm below the surface, and pots were then drained to assess recovery. A fully drained treatment kept at field capacity served as control. During waterlogging, the relative growth rate of roots decreased more than that of shoots (by 6–27% for shoots, by 15–74% for roots), and plant growth was reduced proportionally as the water level was increased. Light-saturated net photosynthesis was reduced by 70–80% for the two most severe waterlogging treatments, but was little affected for plants in soil waterlogged at 200 mm below the surface. The number of adventitious roots formed per stem in plants grown in waterlogged soil increased up to 1.5 times, but the number of tillers per plant was reduced by 24–62%. The adventitious roots only penetrated 85–116 mm below the water level in all waterlogging treatments. Adventitious root porosity was enhanced up to 10-fold for plants grown in waterlogged soil, depending on water level and position along the roots. Porosity also increased in basal zones of roots above the water level when the younger tissues had penetrated the waterlogged zone. Fourteen days after draining the pots, growth rates of plants where the soil had been waterlogged at 200 mm below the surface had recovered, while those of plants in the more severely waterlogged treatments had only partially recovered. These findings show that the depth of waterlogging has a large impact on the response of wheat both during and after a waterlogging event so that assessment of recovery is essential in evaluating waterlogging tolerance in crops.

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40 results on '"Al Imran Malik"'

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