178 results on '"Irene Romero"'
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2. Effect of Short-Term High-CO2 Treatments on the Quality of Highbush and Rabbiteye Blueberries During Cold Storage
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Jose David Toledo-Guerrero, Maria Dolores Álvarez, Beatriz Herranz, M. Isabel Escribano, Carmen Merodio, Irene Romero, and M. Teresa Sanchez-Ballesta
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cell wall ,gene expression ,low temperature ,mechanical properties ,Vaccinium ,Botany ,QK1-989 - Abstract
The global demand for blueberries has increased due to their health benefits, but postharvest losses, particularly firmness loss and decay, present significant challenges. This study evaluated the effects of high CO2 concentrations (15% and 20%) applied for 3 d at 1.0 °C on highbush (cv. ‘Duke’) and rabbiteye (cv. ‘Ochlockonee’) blueberries, with a focus on quality maintenance during cold storage. The quality parameters evaluated included titratable acidity, pH, total soluble solids, weight loss, and decay. The effect of gaseous treatments on firmness was analyzed using mechanical parameters and the expression of genes related to cell wall integrity (XTH23, PL8, PG, PM3, EXP4, and VcGH5). Treatment efficacy varied between species. High CO2 levels reduced decay in both cultivars, but only the highbush cultivar (‘Duke’) showed improvements in firmness. In ‘Duke’, CO2 treatments affected the expression of XTH23, PL8, and GH5, while the role of PG and PME in maintaining firmness was minimal, with no significant differences between treatments. In ‘Ochlockonee’, CO2 effectively reduced weight loss but did not improve firmness. In conclusion, these results highlight the need for tailored postharvest strategies for different blueberry cultivars and suggest that short-term high CO2 treatments may effectively prolong the postharvest life of highbush blueberries.
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- 2024
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3. Editorial: Omics technologies and fruit postharvest quality
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Irene Romero, Ana Margarida Fortes, and Fabrizio Costa
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fruit ,postharvest ,quality ,omics ,chilling injury ,ethylene ,Plant culture ,SB1-1110 - Published
- 2024
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4. Biomarker-guided intervention to prevent acute kidney injury after major surgery (BigpAK-2 trial): study protocol for an international, prospective, randomised controlled multicentre trial
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Joachim Gerss, Javier Ripollés-Melchor, Emmanuel Futier, Melanie Meersch, Carola Wempe, Detlef Kindgen-Milles, Alexander Zarbock, Markus W Hollmann, Sigismond Lasocki, Thomas Rimmele, Tim Rahmel, Michael Adamzik, Hartmuth Nowak, Ingeborg Welters, Brian Johnston, Ane Abad-motos, Alfredo Abad-gurumeta, Marc Moritz Berger, Davide Ricci, Maurizio Cecconi, Gudrun Kunst, Christian Stoppe, Christian Putensen, Marlies Ostermann, Sascha Ott, Brijesh Patel, Gabriele Baldini, Antoine Lamblin, Karen Williams, Elena Mancini, Christian Arndt, Hinnerk Wulf, Marc Irqsusi, Wim Vandenberghe, John Kellum, Raphael Weiss, Jackie Donovan, Lui G Forni, Giacomo Monti, Céline Monard, Markus A Weigand, Thorsten Brenner, Ulrich Jaschinski, Carlos Lopez, Maxime Leger, Emmanuel Rineau, Philipp Simon, María Gómez-Rojo, Lars Bergmann, Alicia Waite, Savino Spadaro, Alexander Wolf, Andrew Spence, Simon Dubler, Alexander PJ Vlaar, Patrick Schober, Ben C Creagh-Brown, Nandor Marczin, Emilio Maseda, Christian Strauss, Stefano Romagnoli, Christian Nusshag, Ulrich Gobel, Ángel Candela-Toha, Jon Silversides, Nuttha Lumlertgul, Khaschayar Saadat-Gilani, Vincent Legros, Timo Brandenburger, Thomas Dimski, Laura Huthmann, Claude Pelletier, Manon Schleß, Peter Rosenberger, Helene Häberle, Jan Gerrit Haaker, Matthias Gründel, Lucia Cattin, Laura Villarino Villa, Juan Victor Lorente, Christine Martin, Jan Larmann, Wolfgang Bauer, Giovanni Borghi, Benjamin O’Brien, Thilo von Groote, Antoine Guillaume Schneider, Silvia De Rosa, Diego Parise, Alice Bernard, Paula Fernández-Valdes-Bango, Irene Romero Bhathal, A Suarez-de-la-Rica, Gianluca Villa, Raquel García-Álvarez, Antonio Siniscalchi, Richard Ellerkmann, Florian Espeter, Christian Porschen, Mahan Sadjadi, Michael Storck, Tobias Brix, Dana Meschede, Wida Amini, Carina Stenger, Julius Freytag, Jens Brands, Matthias Unterberg, Britta Marko, Fabian Dusse, Wolfgang A Wetsch, Sandra E Stoll, Hendrik Drinhaus, Bernd W Böttiger, Onnen Mörer, Lars-Olav Harnisch, Roswitha Lubjuhn, Daniel Heise, Christian Bode, Andrea Sauer, Konrad Peukert, Lennart Wild, Philippe Kruse, Jan Menzenbach, Valbona Mirakaj, Sabine Hermann, Stefanie Decker, Mona Jung-König, Tobias Hölle, Sarah Dehne, Jörg Reutershan, Thomas Prüfer, Stefan Pielmeier, Indra Wimmelmeier, Michaela Scholz, Andrea Paris, Isabel Christina Gallego Zapata, Holger Pohl, Nirmeen Fayed, Kai Dielmann, Evelyn Martin, Tilo Koch, Alexander Mück, Philipp Deetjen, Ngoc Bich Mehlmann, Peter M Spieth, Andreas Güldner, Axel Rand, Maximillian Ragaller, Martin Mirus, Rebecca Bockholt, Marc Herzog, Maren Kleine-Brüggeney, Ant Isabelle Cristiani, Marion Ohl, Monica Vieira Da Silva, Gilda Filipe de Castro Reblo, Matthias Hilty, Katharina Spanaus, Benedetta Mura, Eleonora Terreni, Francesco Magiotti, Lorenzo Turi, Cristiana Laici, Chiara Capozzi, Andrea Castelli, Massimiliano Greco, Antonio Messina, Gianluca Castellani, Romina Aceto, Vinicio Danzi, Alessandro Rigobello, Massimo De Cal, Monica Zanella, Gaetano Scaramuzzo, Riccardo La Rosa, Paolo Priani, Alberto Volta Carlo, Stefano Turi, Martina Baiardo Redaelli, Marilena Marmiere, Kittisak Weerapolchai, Shelley Lorah, Fabiola D’Amato, Aneta Bociek, Rosario Lim, Benjie Cendreda, Reynaldo Dela Cuesta, Eirini Kosifidou, Zoka Milan, Juliana Fernanda, Emma Clarey, Daveena Meeks, Nicholas J Lees, Marco Scaramuzzi, Orinta Kviatkovske, Adam Glass, Christine Turley, Charlotte Quinn, Syeda Haider, Adam Rossiter, Syed Nasser, Ned Gilbert-Kawai, Tatjana Besse-Hammer, Eric Hoste, Hannah Schaubroeck, Jan De Waele, Jenni Breel, Eline de Klerk, Harm-Jan de Grooth, Lothar Schwarte, Alexander Loer, Alicia Ruiz-Escobar, Diana Fernández-García, Nerea Gómez-Pérez, Pascual Crespo-Aliseda, Cristina Cerro-Zaballos, Cristina Fernández-Martín, Eduardo Martín-Montero, Alejandro Suarez de la Rica, Héctor Berges Gutiérrez, Maria del Pino Heredia Pérez, Maria de los Reyes Bellido Fernández, Liena Izquierdo López, Javier Valiente Lourtau, Ma Angeles Ferre Colomer, Ma Azucena Pajares Moncho, Maria Jesús Montero Hernández, Esther Pérez Sancho, Silvia Polo Matínez, Pedro Rivera Soria, Maider Puyada Jáuregui, Hugo Rivera Ramos, Marta Antelo Adrán, Ramón Adalia Bartolomé, Patricia Galán Menéndez, Laura Llinares Espin, Yuri Santiago Loaiza Aldean, Víctor MoralesAriza, Rosalía Navarro-Perez, Luis Santé-Serna, Pedro de la Calle-Elguezabal, Rubén Sánchez-Martín, Inés De Soto, Pau Vallhonrat Alcántara, Laura Perelló Cerdà, Gal·la Rouras Hurtado, Paula Rodriguez Nieto, John Narros Sicluna, Angel Molero Molinero, Juan Pablo Nocete, Elena Murcia Sánchez, Stanislas Abrard, Marie-Luce Parrouffe, Frank Bidar, Lucie Aupetitgendre, Ugo Schiff, Bertille Paquette, Gaëlle Sellier, Nathalie Borgnetta, Benjamin Brochet, Thierry Floch, Julien Coffinet, and Marion Leclercq-Rouget
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Medicine - Abstract
Introduction Previous studies demonstrated that the implementation of the Kidney Disease Improving Global Outcomes (KDIGO) guideline-based bundle, consisting of different supportive measures in patients at high risk for acute kidney injury (AKI), might reduce rate and severity of AKI after surgery. However, the effects of the care bundle in broader population of patients undergoing surgery require confirmation.Methods and analysis The BigpAK-2 trial is an international, randomised, controlled, multicentre trial. The trial aims to enrol 1302 patients undergoing major surgery who are subsequently admitted to the intensive care or high dependency unit and are at high-risk for postoperative AKI as identified by urinary biomarkers (tissue inhibitor of metalloproteinases 2*insulin like growth factor binding protein 7 (TIMP-2)*IGFBP7)). Eligible patients will be randomised to receive either standard of care (control) or a KDIGO-based AKI care bundle (intervention). The primary endpoint is the incidence of moderate or severe AKI (stage 2 or 3) within 72 hours after surgery, according to the KDIGO 2012 criteria. Secondary endpoints include adherence to the KDIGO care bundle, occurrence and severity of any stage of AKI, change in biomarker values during 12 hours after initial measurement of (TIMP-2)*(IGFBP7), number of free days of mechanical ventilation and vasopressors, need for renal replacement therapy (RRT), duration of RRT, renal recovery, 30-day and 60-day mortality, intensive care unit length-of-stay and hospital length-of-stay and major adverse kidney events. An add-on study will investigate blood and urine samples from recruited patients for immunological functions and kidney damage.Ethics and dissemination The BigpAK-2 trial was approved by the Ethics Committee of the Medical Faculty of the University of Münster and subsequently by the corresponding Ethics Committee of the participating sites. A study amendment was approved subsequently. In the UK, the trial was adopted as an NIHR portfolio study. Results will be disseminated widely and published in peer-reviewed journals, presented at conferences and will guide patient care and further research.Trial registration number NCT04647396.
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- 2023
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5. Are the Blueberries We Buy Good Quality? Comparative Study of Berries Purchased from Different Outlets
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M. Teresa Sanchez-Ballesta, Carmen Marti-Anders, M. Dolores Álvarez, M. Isabel Escribano, Carmen Merodio, and Irene Romero
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blueberries ,quality ,firmness ,fungal infection ,anthocyanin content ,phenolic content ,Chemical technology ,TP1-1185 - Abstract
Blueberries (Vaccinium corymbosum L.) are becoming increasingly popular for their nutritional and health benefits, and their economic value is therefore increasing. The loss of quality that can occur due to softening and fungal attack is an important consideration when marketing blueberries. Despite the added value of blueberries, no studies have been carried out on how the fruit arrives at the outlets just before purchase by the consumer in terms of firmness, physico-chemical parameters, phenolic compounds, and fungal growth. The aim of this work has been, therefore, to investigate possible differences in quality parameters between blueberries purchased from ten different outlets, regardless of the supplier. The results showed that all the samples were of acceptable quality, although they all had a low maturity index at the point of sale. None of the samples studied showed clear signs of fungal decay at the time of purchase, although we were able to grow and identify some pathogen specimens after cultivation. In terms of total phenolic and anthocyanin content, as well as antioxidant activity, all the samples showed low values, possibly due to their postharvest storage, but they were within the expected range for this fruit. On the other hand, differences in the measured parameters were observed between samples of the same cultivar while no differences were found between conventionally and organically grown blueberries. This suggests that preharvest (such as edaphoclimatic conditions, agricultural practices, and cultivars) and postharvest factors (such as treatments used, storage, and transport temperatures) could influence the berry quality when they reach the consumer.
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- 2023
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6. Transcriptomic analysis of CO2-treated strawberries (Fragaria vesca) with enhanced resistance to softening and oxidative stress at consumption
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Ivan del Olmo, Irene Romero, Maria Dolores Alvarez, Rosa Tarradas, Maria Teresa Sanchez-Ballesta, Maria Isabel Escribano, and Carmen Merodio
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cell wall ,CO2 ,firmness ,H2O2 ,lignin ,RNA-seq ,Plant culture ,SB1-1110 - Abstract
One of the greatest threats to wild strawberries (Fragaria vesca Mara des Bois) after harvest is the highly perishability at ambient temperature. Breeders have successfully met the quality demands of consumers, but the prevention of waste after harvest in fleshy fruits is still pending. Most of the waste is due to the accelerated progress of senescence-like process after harvest linked to a rapid loss of water and firmness at ambient temperature. The storage life of strawberries increases at low temperature, but their quality is limited by the loss of cell structure. The application of high CO2 concentrations increased firmness during cold storage. However, the key genes related to resistance to softening and cell wall disassembly following transference from cold storage at 20°C remain unclear. Therefore, we performed RNA-seq analysis, constructing a weighted gene co-expression network analysis (WGCNA) to identify which molecular determinants play a role in cell wall integrity, using strawberries with contrasting storage conditions, CO2-cold stored (CCS), air-cold stored (ACS), non-cold stored (NCS) kept at ambient temperature, and intact fruit at harvest (AH). The hub genes associated with the cell wall structural architecture of firmer CO2-treated strawberries revealed xyloglucans stabilization attributed mainly to a down-regulation of Csl E1, XTH 15, Exp-like B1 and the maintenance of expression levels of nucleotide sugars transferases such as GMP and FUT as well as improved lamella integrity linked to a down-regulation of RG-lyase, PL-like and PME. The preservation of cell wall elasticity together with the up-regulation of LEA, EXPA4, and MATE, required to maintain cell turgor, is the mechanisms controlled by high CO2. In stressed air-cold stored strawberries, in addition to an acute softening, there is a preferential transcript accumulation of genes involved in lignin and raffinose pathways. Non-cold stored strawberries kept at 20°C after harvest are characterized by an enrichment in genes mainly involved in oxidative stress and up-expression of genes involved in jasmonate biosynthesis. The present results on transcriptomic analysis of CO2-treated strawberries with enhanced resistance to softening and oxidative stress at consumption will help to improve breeding strategies of both wild and cultivated strawberries.
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- 2022
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7. Evaluation of the Morpho-Physiological, Biochemical and Molecular Responses of Contrasting Medicago truncatula Lines under Water Deficit Stress
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Loua Haddoudi, Sabrine Hdira, Mohsen Hanana, Irene Romero, Imen Haddoudi, Asma Mahjoub, Hatem Ben Jouira, Naceur Djébali, Ndiko Ludidi, Maria Teresa Sanchez-Ballesta, Chedly Abdelly, and Mounawer Badri
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Medicago truncatula ,water deficit stress ,morpho-physiological characters ,biochemical parameters ,DREB1B ,Botany ,QK1-989 - Abstract
Medicago truncatula is a forage crop of choice for farmers, and it is a model species for molecular research. The growth and development and subsequent yields are limited by water availability mainly in arid and semi-arid regions. Our study aims to evaluate the morpho-physiological, biochemical and molecular responses to water deficit stress in four lines (TN6.18, JA17, TN1.11 and A10) of M. truncatula. The results showed that the treatment factor explained the majority of the variation for the measured traits. It appeared that the line A10 was the most sensitive and therefore adversely affected by water deficit stress, which reduced its growth and yield parameters, whereas the tolerant line TN6.18 exhibited the highest root biomass production, a significantly higher increase in its total protein and soluble sugar contents, and lower levels of lipid peroxidation with greater cell membrane integrity. The expression analysis of the DREB1B gene using RT-qPCR revealed a tissue-differential expression in the four lines under osmotic stress, with a higher induction rate in roots of TN6.18 and JA17 than in A10 roots, suggesting a key role for DREB1B in water deficit tolerance in M. truncatula.
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- 2021
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8. Morpho-Physiological, Biochemical, and Genetic Responses to Salinity in Medicago truncatula
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Sabrine Hdira, Loua Haddoudi, Mohsen Hanana, Irene Romero, Asma Mahjoub, Hatem Ben Jouira, Ndiko Ludidi, Maria Teresa Sanchez-Ballesta, Chedly Abdelly, and Mounawer Badri
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Medicago truncatula ,morpho-physiological traits ,biochemical parameters ,AP2/ERF family ,salt stress ,Botany ,QK1-989 - Abstract
We used an integrated morpho-physiological, biochemical, and genetic approach to investigate the salt responses of four lines (TN1.11, TN6.18, JA17, and A10) of Medicago truncatula. Results showed that TN1.11 exhibited a high tolerance to salinity, compared with the other lines, recording a salinity induced an increase in soluble sugars and soluble proteins, a slight decrease in malondialdehyde (MDA) accumulation, and less reduction in plant biomass. TN6.18 was the most susceptible to salinity as it showed less plant weight, had elevated levels of MDA, and lower levels of soluble sugars and soluble proteins under salt stress. As transcription factors of the APETALA2/ethylene responsive factor (AP2/ERF) family play important roles in plant growth, development, and responses to biotic and abiotic stresses, we performed a functional characterization of MtERF1 gene. Real-time PCR analysis revealed that MtERF1 is mainly expressed in roots and is inducible by NaCl and low temperature. Additionally, under salt stress, a greater increase in the expression of MtERF1 was found in TN1.11 plants than that in TN6.18. Therefore, the MtERF1 pattern of expression may provide a useful marker for discriminating among lines of M. truncatula and can be used as a tool in breeding programs aiming at obtaining Medicago lines with improved salt tolerance.
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- 2021
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9. Expression of Structural Flavonoid Biosynthesis Genes in Dark-Blue and White Myrtle Berries (Myrtus communis L.)
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Silvia Medda, Maria Teresa Sanchez-Ballesta, Irene Romero, Leonarda Dessena, and Maurizio Mulas
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myrtle berry ,pigmentation ,anthocyanins ,flavonoids gene expression ,RT-qPCR ,Botany ,QK1-989 - Abstract
Within the myrtle (Myrtus communis L.) species, different genotypes may produce dark-blue berries or white berries depending on the peel color upon ripening. One dark-blue cultivar and one white myrtle cultivar were used to study the molecular mechanisms underlying flavonoid biosynthesis. The relative expression levels of common (PAL, CHS, CHI, DFR and LDOX) and specific (FLS, ANR, LAR and UFGT) flavonoid genes were analyzed during fruit development by means of quantitative real-time polymerase chain reaction (RT-qPCR). Moreover, the anthocyanin content was determined, and it showed an increase with the ripening of the berries of the dark-blue cultivar. The results showed an increased transcript abundance of PAL, CHI, DFR, LDOX and UFGT gene expression in the dark-blue cultivar compared to the white one, as well as a strong positive correlation between the changes in gene expression and anthocyanin accumulation. The transcript levels of UFGT showed sharp increases at 150 and 180 days after full blooming (DAF) in the dark-blue cultivar, which corresponded with anthocyanin accumulation. However, ripening seemed to modulate the expression of genes implicated in flavonols (i.e., FLS) and flavan-3-ols (i.e., LAR and ANR) in different manners. However, whereas FLS transcript accumulation increased at the end of the ripening period in the dark-blue cultivar, LAR and ANR gene expression decreased in both cultivars.
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- 2021
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10. MHC Intratumoral Heterogeneity May Predict Cancer Progression and Response to Immunotherapy
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Irene Romero, Cristina Garrido, Ignacio Algarra, Virginia Chamorro, Antonia Collado, Federico Garrido, and Angel M. Garcia-Lora
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intratumoral heterogeneity ,MHC ,metastases ,T lymphocytes ,immunotherapy ,Immunologic diseases. Allergy ,RC581-607 - Abstract
An individual tumor can present intratumoral phenotypic heterogeneity, containing tumor cells with different phenotypes that do not present irreversible genetic alterations. We have developed a mouse cancer model, named GR9, derived from a methylcholanthrene-induced fibrosarcoma that was adapted to tissue culture and cloned into different tumor cell lines. The clones showed diverse MHC-I phenotypes, ranging from highly positive to weakly positive MHC-I expression. These MHC-I alterations are due to reversible molecular mechanisms, because surface MHC-I could be recovered by IFN-γ treatment. Cell clones with high MHC-I expression demonstrated low local oncogenicity and high spontaneous metastatic capacity, whereas MHC-I-low clones showed high local oncogenicity and no spontaneous metastatic capacity. Although MHC-I-low clones did not metastasize, they produced MHC-I-positive dormant micrometastases controlled by the host immune system, i.e., in a state of immunodormancy. The metastatic capacity of each clone was directly correlated with the host T-cell subpopulations; thus, a strong decrease in cytotoxic and helper T lymphocytes was observed in mice with numerous metastases derived from MHC-I positive tumor clones but a strong increase was observed in those with dormant micrometastases. Immunotherapy was administered to the hosts after excision of the primary tumor, producing a recovery in their immune status and leading to the complete eradication of overt spontaneous metastases or their decrease. According to these findings, the combination of MHC-I surface expression in primary tumor and metastases with host T-cell subsets may be a decisive indicator of the clinical outcome and response to immunotherapy in metastatic disease, allowing the identification of responders to this approach.
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- 2018
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11. Deciphering the Role of CBF/DREB Transcription Factors and Dehydrins in Maintaining the Quality of Table Grapes cv. Autumn Royal Treated with High CO2 Levels and Stored at 0°C
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Maria Vazquez-Hernandez, Irene Romero, M. I. Escribano, Carmen Merodio, and M. T. Sanchez-Ballesta
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CBF/DREB ,dehydrins ,transcription factors ,Vitis vinifera ,carbon dioxide ,low temperature ,Plant culture ,SB1-1110 - Abstract
C-repeat/dehydration-responsive element binding factors (CBF/DREB) are transcription factors which play a role in improving plant cold stress resistance and recognize the DRE/CRT element in the promoter of a set of cold regulated genes. Dehydrins (DHNs) are proteins that accumulate in plants in response to cold stress, which present, in some cases, CBF/DREB recognition sequences in their promoters and are activated by members of this transcription factor family. The application of a 3-day gaseous treatment with 20 kPa CO2 at 0°C to table grapes cv. Autumn Royal maintained the quality of the bunches during postharvest storage at 0°C, reducing weight loss and rachis browning. In order to determine the role of CBF/DREB genes in the beneficial effect of the gaseous treatment by regulating DHNs, we have analyzed the gene expression pattern of three VviDREBA1s (VviDREBA1-1, VviDREBA1-6, and VviDREBA1-7) as well as three VviDHNs (VviDHN1a, VviDHN2, and VviDHN4), in both alternative splicing forms. Results showed that the differences in VviDREBA1s expression were tissue and atmosphere composition dependent, although the application of high levels of CO2 caused a greater increase of VviDREBA1-1 in the skin, VviDREBA1-6 in the pulp and VviDREBA1-7 in the skin and pulp. Likewise, the application of high levels of CO2 regulated the retention of introns in the transcripts of the dehydrins studied in the different tissues analyzed. The DHNs promoter analysis showed that VviDHN2 presented the cis-acting DRE and CRT elements, whereas VviDHN1a presented only the DRE motif. Our electrophoretic mobility shift assays (EMSA) showed that VviDREBA1-1 was the only transcription factor that had in vitro binding capacity to the CRT element of the VviDHN2 promoter region, indicating that the transcriptional regulation of VviDHN1a and VviDHN4 would be carried out by activating other independent routes of these transcription factors. Our results suggest that the application of high CO2 levels to maintain table grape quality during storage at 0°C, leads to an activation of CBF/DREBs transcription factors. Among these factors, VviDREBA1-1 seems to participate in the transcriptional activation of VviDHN2 via CRT binding, with the unspliced form of this DHN being activated by high CO2 levels in all the tissues analyzed.
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- 2017
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12. Analysis of the Performance of Various PV Module Technologies in Peru
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Irene Romero-Fiances, Emilio Muñoz-Cerón, Rafael Espinoza-Paredes, Gustavo Nofuentes, and Juan De la Casa
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PV technologies ,performance ratio ,yields ,Peru ,Technology - Abstract
A knowledge gap exists about the actual behavior of PV grid-connected systems (PVGCS) using various PV technologies in Peru. This paper presents the results of an over three-year-long performance evaluation of a 3.3-kWp monocrystalline silicon (sc-Si) PVGCS located in Arequipa, a 3.3-kWp sc-Si PVGCS located in Tacna, and a 3-kWp policrystalline (mc-Si) PVGCS located in Lima. An assessment of the performance of a 3.5-kWp amorphous silicon/crystalline silicon hetero-junction (a-Si/µc-Si) PVGCS during over one and a half years of being in Lima is also presented. The annual final yields obtained lie within 1770–1992 kWh/kW, 1505–1540 kWh/kW, and 736–833 kWh/kW for Arequipa, Tacna, and Lima, respectively, while the annual PV array energy yield achieved by a-Si/µc-Si is 1338 kWh/kW. The annual performance ratio stays in the vicinity of 0.83 for sc-Si in Arequipa and Tacna while this parameter ranges from 0.70 to 0.77 for mc-Si in Lima. An outstanding DC annual performance ratio of 0.97 is found for a-Si/µc-Si in the latter site. The use of sc-Si and presumably, mc-Si PV modules in desert climates, such as that of Arequipa and Tacna, is encouraged. However, sc-Si and presumably, mc-Si-technologies experience remarkable temperature and low irradiance losses in Lima. By contrast, a-Si/µc-Si PV modules perform much better in the latter site thanks to being less influenced by both temperature and low light levels.
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- 2019
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13. Expression profiles and DNA-binding affinity of five ERF genes in bunches of Vitis vinifera cv. Cardinal treated with high levels of CO2 at low temperature
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Irene Romero, Maria Vazquez-Hernandez, M. Isabel Escribano, Carmen Merodio, and M Teresa Sanchez-Ballesta
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Carbon Dioxide ,Transcription Factors ,Low temperature ,Vitis vinifera ,ERFs ,Plant culture ,SB1-1110 - Abstract
Ethylene response factors (ERFs) play an important role in plants by regulating defense response through interaction with various stress pathways. After harvest, table grapes (Vitis vinifera L.) are subject to a range of problems associated with postharvest storage at 0ºC, such as fungal attack, water loss and rachis browning. The application of a 3-day high CO2 treatment maintained fruit quality and activated the induction of transcription factors belonging to different families such as ERF. In this paper, we have isolated five VviERFs from table grapes cv. Cardinal, whose deduced amino acid sequence contained the conserved apetalous (AP2)/ERF domain. The phylogeny and putative conserved motifs in VviERFs were analyzed and compared with those previously reported in Vitis. VviERFs-c gene expression was studied by quantitative real-time RT-PCR (RT-qPCR) in the different tissues of bunches stored at low temperature and treated with high levels of CO2. The results showed that in most of the tissues analyzed, VviERFs-c gene expression was induced by the storage under normal atmosphere although the application of high levels of CO2 caused a greater increase in the VviERFs-c transcript accumulation. The promoter regions of two PRs (Pathogenesis Related Proteins), Vcchit1b and Vcgns1, were obtained and the in silico analysis revealed the presence of a cis-acting ethylene response element (GCC box). In addition, gene expression of these two PRs was analyzed in the pulp and rachis of CO2-treated and non-treated table grapes stored at 0ºC and results showed significant correlations with VviERF2-c and VviERF6L7-c gene expression in rachis, and between VviERF11-c and Vcchit1b in pulp. Finally by using electro mobility shift assays (EMSA), we denoted differences in binding of VviERFs to the GCC sequences present in the promoters of both PRs, with VviERF6L7-c being the only member which did not bind to any tested probe. Overall, our results suggest that the beneficial effect of high CO2 treatment maintaining table grape quality seems to be mediated by the regulation of ERFs and in particular VviERF2-c might play an important role by modulating the expression of PRs.
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- 2016
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14. Low temperature and short-term high-CO2 treatment in postharvest storage of table grapes at two maturity stages: Effects on transcriptome profiling.
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Raquel Rosales, Irene Romero, Carlos Fernandez-Caballero, M. Isabel Escribano, Carmen Merodio, and M Teresa Sanchez-Ballesta
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Carbon Dioxide ,Microarray Analysis ,postharvest ,Low temperature ,Vitis vinifera ,Plant culture ,SB1-1110 - Abstract
Table grapes (Vitis vinifera cv. Cardinal) are highly perishable and their quality deteriorates during postharvest storage at low temperature mainly because of sensitivity to fungal decay and senescence of rachis. The application of a 3-day CO2 treatment (20 kPa CO2 + 20 kPa O2 + 60 kPa N2) at 0ºC reduced total decay and retained fruit quality in early and late-harvested table grapes during postharvest storage. In order to study the transcriptional responsiveness of table grapes to low temperature and high CO2 levels in the first stage of storage and how the maturity stage affect these changes, we have performed a comparative large-scale transcriptional analysis using the custom-made GrapeGen GeneChip®. In the first stage of storage, low temperature led to a significantly intense change in grape skin transcriptome irrespective of fruit maturity, although there were different changes within each stage. In the case of CO2 treated samples, in comparison to fruit at time zero, only slight differences were observed. Functional enrichment analysis revealed that major modifications in the transcriptome profile of early- and late-harvested grapes stored at 0ºC are linked to biotic and abiotic stress-responsive terms. However, in both cases there is a specific reprogramming of the transcriptome during the first stage of storage at 0ºC in order to withstand the cold stress. Thus, genes involved in gluconeogenesis, photosynthesis, mRNA translation and lipid transport were up-regulated in the case of early-harvested grapes, and genes related to protein folding stability and intracellular membrane trafficking in late-harvested grapes. The beneficial effect of high CO2 treatment maintaining table grape quality seems to be an active process requiring the induction of several transcription factors and kinases in early-harvested grapes, and the activation of processes associated to the maintenance of energy in late-harvested grapes.
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- 2016
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15. La influencia de la Postmodernidad en Orgullo y Prejuicio (1813): Persiguiendo a Jane Austen (2008), Dan Zeff.
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Irene Romero González
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Postmodernidad ,Orgullo y Prejuicio ,Persiguiendo a Jane Austen ,cine ,literatura ,anacronismos ,Communication. Mass media ,P87-96 - Abstract
Las novelas de Jane Austen siguen inspirando nuevos relatos cinematográficos pues éstos toman sus historias o sus personajes y los adaptan a contextos culturales y axiológicos actuales de gran diversidad. Es el caso de la novela de Orgullo y Prejuicio de la que se han realizado numerosas adaptaciones clásicas, así como que ha sido objeto de referencia en películas, en trabajos literarios y de adaptaciones postmodernas. Uno de estos trabajos postmodernos es Persiguiendo a Jane Austen una serie inglesa que nos adentra en el mundo de la Regencia a través de las vivencias de una mujer contemporánea que descubre una puerta que comunica ambos mundos y que le permite vivir la historia de Austen bajo la piel de Elizabeth Bennet. A lo largo de este trabajo se realizará un análisis comparado entre esta adaptación postmoderna y su referente literario para comprobar cómo influyen las ideas de la Postmodernidad en un clásico de la literatura decimonónica, pues es una tendencia que nos ayuda a replantearnos un periodo de la historia y a reinterpretar el contexto de la novela original a uno distinto y original.
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- 2012
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16. Statistical analysis plan for the biomarker-guided intervention to prevent acute kidney injury after major surgery (BigpAK-2) study: An international randomised controlled multicentre trial
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Wempe, Carola, Storck, Michael, Brix, Tobias, Strauss, Christian, Sadjadi, Mahan, Weiss, Raphael, Booke, Hendrik, Loomann, Lisa, Amini, Wida, Meschede, Dana, Göbel, Ulrich, Haaker, Jan Gerrit, Brenner, Thorsten, Espeter, Florian, Rahmel, Tim, Adamzik, Michael, Brandenburger, Timo, Putensen, Christian, Bode, Christian, Kruse, Philippe, Wild, Lennart, Rosenberger, Peter, Bernard, Alice, Jung-König, Mona, Larmann, Jan, Reutershan, Jörg, Arndt, Christian, Vojnar, Benjamin, Spieth, Peter M., Schneider, Antoine, Monard, Céline, Mura, Benedetta, Villa, Gianluca, Laici, Cristiana, Siniscalchi, Antonio, Capozzi, Chiara, Sita, Marco, Cattin, Lucia, de Rosa, Silvia, Spadaro, Savino, Franco, D'Arcangelo Benito, Ostermann, Marlies, Gossage, James, Verzelloni, Alessandra, Scaramuzzi, Marco, Glass, Adam, Silversides, Jon, Lonsdale, Elliot, Forni, Lui G., Haider, Syeda, Rossiter, Adam, Welters, Ingeborg, Hoste, Eric, Hollmann, Markus W., Ripollés-Melchor, Javier, Fernández-Valdes-Bango, Paula, Parise-Roux, Diego, Martin González, Maria Carmen, Bathal, Irene Romero, Jáuregui, Maider Puyada, Navarro-Perez, Rosalía, De Soto, Inés, García-Álvarez, Raquel, Sánchez, Elena Murcia, Suarez-de-la-Rica, Alejandro, Lalande, Robin, von Groote, Thilo, Danzer, Moritz Fabian, Meersch, Melanie, Zarbock, Alexander, and Gerß, Joachim
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- 2024
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17. La reinserción de la mujer ex-combatiente. Un legado de guerra
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Irene Romero
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Guerra civil ,Mujeres en la guerra ,Guerrillas ,Social sciences (General) ,H1-99 - Abstract
No hay resúmenes disponibles Realidad: Revista de Ciencias Sociales y Humanidades No. 44, 1995: 369-383
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- 1995
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18. Stenosis detection in coronary angiography images using deep learning models.
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Rafael M. Luque-Baena, Irene Romero Granados, Ariadna Jiménez-Partinen, Esteban J. Palomo, and Manuel Jiménez-Navarro
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- 2022
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19. Gestational diabetes prevalence and outcomes in women undergoing assisted reproductive techniques (ART)
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Gemma, Sesmilo, Pilar, Prats, Manuel, Álvarez, Irene, Romero, Mireia, Guerrero, Ignacio, Rodríguez, Alberto, Rodríguez-Melcón, Sandra, Garcia, and Bernat, Serra Also
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Nutrition and Dietetics ,Endocrinology ,Endocrinology, Diabetes and Metabolism - Abstract
Infertility affects millions worldwide and use of assisted reproductive techniques (ART) is in high demand.To investigate whether women that underwent ART at our hospital had a higher incidence of GDM than women who conceived spontaneously, if the ART subtype affects the GDM rate and to study obstetrical outcomes in women with GDM in both groups.This was a retrospective analysis of prospectively collected data of singleton pregnancies attended at Hospital Universitari Dexeus between 2008 and 2019. Age18 years, pregestational diabetes, metformin prior to pregnancy and multiple pregnancies were excluded.A total of 29,529 patients were included. Pregnancy was achieved by ART in 2596 (8.8%): in vitro fertilisation (IVF/ICSI) 32.8%, frozen embryo transfer (FET) 37.7%, oocyte donor receptors (ODR) 17.2% and insemination 12.2%. The GDM rate was 8.9% (12.7% in ART vs 8.5% in non-ART, p0.001). The GDM was 11.2% in IVF/ICSI, 17.7% in ODR, 13% in FET and 9.1% in the insemination group (p=0.001). In a multivariable analysis adjusting for age, parity and BMI, ART was not associated with GDM [OR 1.03 (0.90-1.19)], nor was type of ART. Pregnancy outcomes in GDM patients were similar in both groups except for C-section rates (30.0% in ART vs 15.9% in non-ART (p0.001).Despite a higher prevalence of GDM in ART pregnancies, ART was not associated with an increased risk of GDM when adjusting for age, parity and BMI. The prognosis of GDM in ART and non-ART was similar except for C-section rates.
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- 2022
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20. Postharvest High-CO2 Treatments on the Quality of Soft Fruit Berries: An Integrated Transcriptomic, Proteomic, and Metabolomic Approach
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Irene Romero, M. Isabel Escribano, Carmen Merodio, M. Teresa Sanchez-Ballesta, Comisión Interministerial de Ciencia y Tecnología, CICYT (España), Agencia Estatal de Investigación (España), and Ministerio de Ciencia, Innovación y Universidades (España)
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Fruit quality ,Omics technologies ,Postharvest ,Gaseous treatments ,General Chemistry ,Soft fruit berries ,General Agricultural and Biological Sciences - Abstract
Soft fruits are appreciated for their taste qualities and for being a source of health-promoting compounds. However, their postharvest is affected by their high respiratory rates and susceptibility to fungal decay. Our aim here is to provide a perspective on the application of short-term high-CO2 treatments at a low temperature to maintain the postharvest quality of soft fruits. This work also suggests using a multi-omics approach to better understand the role of the cell wall and phenolic compounds in maintaining quality. Finally, the contribution of high-throughput transcriptomic technologies to understand the mechanisms modulated by the short-term gaseous treatments is also highlighted., This work was supported by CICYT Project PID2020-113965RB-I00/AEI/10.13039/501100011033.
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- 2022
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21. Impact of duration and missing data on the long-term photovoltaic degradation rate estimation
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Gustavo Nofuentes, George Makrides, Irene Romero-Fiances, George E. Georghiou, Juan de la Casa, Joshua S. Stein, Marios Theristis, and Andreas Livera
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Noise ,Renewable Energy, Sustainability and the Environment ,Ordinary least squares ,Statistics ,Photovoltaic system ,Autoregressive integrated moving average ,Duration (project management) ,Missing data ,Robust principal component analysis ,Mathematics ,Term (time) - Abstract
Accurate quantification of photovoltaic (PV) system degradation rate (RD) is essential for lifetime yield predictions. Although RD is a critical parameter, its estimation lacks a standardized methodology that can be applied on outdoor field data. The purpose of this paper is to investigate the impact of time period duration and missing data on RD by analyzing the performance of different techniques applied to synthetic PV system data at different linear RD patterns and known noise conditions. The analysis includes the application of different techniques to a 10-year synthetic dataset of a crystalline Silicon PV system, with emulated degradation levels and imputed missing data. The analysis demonstrated that the accuracy of ordinary least squares (OLS), year-on-year (YOY), autoregressive integrated moving average (ARIMA) and robust principal component analysis (RPCA) techniques is affected by the evaluation duration with all techniques converging to lower RD deviations over the 10-year evaluation, apart from RPCA at high degradation levels. Moreover, the estimated RD is strongly affected by the amount of missing data. Filtering out the corrupted data yielded more accurate RD results for all techniques. It is proven that the application of a change-point detection stage is necessary and guidelines for accurate RD estimation are provided.
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- 2022
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22. Biomarker-guided intervention to prevent acute kidney injury after major surgery (BigpAK-2 trial) : study protocol for an international, prospective, randomised controlled multicentre trial
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Thilo von Groote, Melanie Meersch, Stefano Romagnoli, Marlies Ostermann, Javier Ripollés-Melchor, Antoine Guillaume Schneider, Wim Vandenberghe, Céline Monard, Silvia De Rosa, Lucia Cattin, Tim Rahmel, Michael Adamzik, Diego Parise, Angel Candela-Toha, Jan Gerrit Haaker, Ulrich Göbel, Alice Bernard, Nuttha Lumlertgul, Paula Fernández-Valdes-Bango, Irene Romero Bhathal, A Suarez-de-la-Rica, Jan Larmann, Gianluca Villa, Savino Spadaro, Hinnerk Wulf, Christian Arndt, Christian Putensen, Raquel García-Álvarez, Timo Brandenburger, Antonio Siniscalchi, Richard Ellerkmann, Florian Espeter, Christian Porschen, Mahan Sadjadi, Khaschayar Saadat-Gilani, Raphael Weiss, Joachim Gerss, John Kellum, and Alexander Zarbock
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Medizin ,General Medicine ,ddc:610 - Abstract
IntroductionPrevious studies demonstrated that the implementation of the Kidney Disease Improving Global Outcomes (KDIGO) guideline-based bundle, consisting of different supportive measures in patients at high risk for acute kidney injury (AKI), might reduce rate and severity of AKI after surgery. However, the effects of the care bundle in broader population of patients undergoing surgery require confirmation.Methods and analysisThe BigpAK-2 trial is an international, randomised, controlled, multicentre trial. The trial aims to enrol 1302 patients undergoing major surgery who are subsequently admitted to the intensive care or high dependency unit and are at high-risk for postoperative AKI as identified by urinary biomarkers (tissue inhibitor of metalloproteinases 2*insulin like growth factor binding protein 7 (TIMP-2)*IGFBP7)). Eligible patients will be randomised to receive either standard of care (control) or a KDIGO-based AKI care bundle (intervention). The primary endpoint is the incidence of moderate or severe AKI (stage 2 or 3) within 72 hours after surgery, according to the KDIGO 2012 criteria. Secondary endpoints include adherence to the KDIGO care bundle, occurrence and severity of any stage of AKI, change in biomarker values during 12 hours after initial measurement of (TIMP-2)*(IGFBP7), number of free days of mechanical ventilation and vasopressors, need for renal replacement therapy (RRT), duration of RRT, renal recovery, 30-day and 60-day mortality, intensive care unit length-of-stay and hospital length-of-stay and major adverse kidney events. An add-on study will investigate blood and urine samples from recruited patients for immunological functions and kidney damage.Ethics and disseminationThe BigpAK-2 trial was approved by the Ethics Committee of the Medical Faculty of the University of Münster and subsequently by the corresponding Ethics Committee of the participating sites. A study amendment was approved subsequently. In the UK, the trial was adopted as an NIHR portfolio study. Results will be disseminated widely and published in peer-reviewed journals, presented at conferences and will guide patient care and further research.Trial registration numberNCT04647396.
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- 2023
23. inteligencia artificial en la Educación Física en tiempo de COVID 19
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Marco Antonio Toala Pilay, Vicente Fray Romero Castro, Martha Irene Romero Castro, and Rosario Magdalena Romero Castro
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La Inteligencia Artificial, al igual que otras tecnologías disruptivas, son hoy un espacio de innovación para la educación en época del COVID. Este estudio tributo al proyecto de investigación de la universidad estatal del sur de Manabí: la enseñanza constructivista sustentado en la inteligencia artificial. Determinar el enfrentamiento de alumnos y profesores, las clases de Educación Física en aislamiento. Se realizó un estudio descriptivo y transversal en 7 profesores y 28 estudiantes, se manejaron algunas variables: metodología física del trabajo de educación a distancia, situación de aislamiento pandémico. 75% estudiantes señalaron la eficiencia de las capsulas educativas más didáctica que las guías educativas, el 100 % profesores el refieren lo difícil de la utilización de las clases online, pero a la vez son muy motivadoras. Las educaciones físicas virtuales se han convertido en herramientas eficaces que pueden contribuir a la calidad de vida de las personas aisladas.
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- 2021
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24. Stenosis detection in coronary angiography images using deep learning models
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Luque-Baena, Rafael M., primary, Granados, Irene Romero, additional, Jimenez-Partinen, Ariadna, additional, Palomo, Esteban J., additional, and Jimenez-Navarro, Manuel, additional
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- 2022
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25. Prevalence of severe hypercholesterolemia observed in different hospitals in Andalusia and Ceuta
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Esther Roldán Fontana, Firma Isabel Rodríguez Sánchez, María Luisa Nieto, Cristina Romero Baldonado, José Vicente García Lario, María Cinta Montilla López, María Herranz, Begoña Gallardo Alguacil, Irene Romero García, Enrique Melguizo Madrid, Manuel Rodríguez Espinosa, Teresa Arrobas Velilla, Elena Bonet Struch, Jacobo Diaz Portillo, Joaquín Bobillo Lobato, Salomé Hijano Villegas, Antonio León Justel, Gema María Varo Sánchez, and Ignacio Vázquez Rico
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Pediatrics ,medicine.medical_specialty ,High prevalence ,business.industry ,Incidence (epidemiology) ,General Engineering ,Early detection ,Primary care ,Disease ,Methods observational ,General Earth and Planetary Sciences ,Medicine ,lipids (amino acids, peptides, and proteins) ,Risk factor ,business ,General Environmental Science - Abstract
Severe hypercholesterolaemia is a major cardiovascular risk factor. Early detection and treatment can reduce the incidence of cardiovascular disease. Given the high prevalence of hypercholesterolaemia in Andalusia, the development of a screening strategy for its detection in Primary Care may be an efficient measure. Objective To identify patients in Primary Care with severe hypercholesterolaemia that may increase their cardiovascular risk by reviewing LDL-cholesterol results in computerised laboratory systems. Material and methods Observational, retrospective, multi-centre study in 16 hospitals in Andalusia and Ceuta. Anonymous analytical data were acquired from the different laboratory computer systems for the year 2018, and exclusively from Macarena Hospital for the year 2019. Results From a total of 1,969,035 determinations on ≥18 years old, 2791 patients (0.14%) were detected with LDL-cholesterol >250 mg/dl and from a total of 2.327.211 determinations studied in children under 18 years old, 3804 patients (0.16%) were detected with LDL-cholesterol >135 mg/dl. The highest incidence of possible genetic hypercholesterolaemia in adults corresponded to the province of Seville with 23.6 cases/1000 determinations, while in minors, the highest incidence corresponded to the province of Cadiz with 75 possible cases/1000 determinations. A geographical triangle of greater prevalence is observed between the provinces of Seville, Huelva and Cadiz. Conclusions The development of a screening strategy using a computerised review of LDL-cholesterol in Primary Care detects a large number of subjects with severe hypercholesterolaemia that could benefit from an early intervention.
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- 2021
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26. Prevalencia de hipercolesterolemias severas observadas en los distintos hospitales de Andalucía y Ceuta
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Esther Roldán Fontana, María Cinta Montilla López, María Herranz, Firma Isabel Rodríguez Sánchez, Teresa Arrobas Velilla, Irene Romero García, Enrique Melguizo Madrid, José Vicente García Lario, Begoña Gallardo Alguacil, Cristina Romero Baldonado, Jacobo Diaz Portillo, Manuel Rodríguez Espinosa, Salomé Hijano Villegas, María Luisa Nieto, Gema María Varo Sánchez, Antonio León Justel, Elena Bonet Struch, Ignacio Vázquez Rico, and Joaquín Bobillo Lobato
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03 medical and health sciences ,0302 clinical medicine ,Pharmacology (medical) ,030212 general & internal medicine ,030204 cardiovascular system & hematology ,Cardiology and Cardiovascular Medicine - Abstract
Resumen La hipercolesterolemia severa es un importante factor de riesgo cardiovascular. Su deteccion precoz y tratamiento puede reducir la incidencia de las enfermedades cardiovasculares. Dada la alta prevalencia de hipercolesterolemia en Andalucia, el desarrollo de una estrategia oportunista para su deteccion en atencion primaria puede ser una medida eficiente. Objetivo Identificar pacientes en atencion primaria con hipercolesterolemias severas que puedan incrementar su riesgo cardiovascular mediante una consulta del colesterol- LDL al sistema informatico de laboratorio. Material y metodos Estudio observacional, retrospectivo, multicentrico, en 16 hospitales de Andalucia y Ceuta. Se adquirieron datos analiticos anonimizados de los diferentes sistemas informaticos de laboratorio del ano 2018 y exclusivamente del Hospital Virgen Macarena para el ano 2019. Resultados De un total de 1.969.035 determinaciones ≥ 18 anos se detectaron 2.791 pacientes (0,14%) con colesterol-LDL > 250 mg/dl, y en menores de 18 anos, sobre un total de 2.327.211 determinaciones estudiadas, se detectaron 3.804 pacientes (0,16%) con colesterol-LDL > 135 mg/dl. La mayor incidencia de posibles hipercolesterolemias geneticas en adultos correspondio a la provincia Sevilla con 23,6 casos/1.000 determinaciones, mientras que en menores la mayor incidencia correspondio a la provincia de Cadiz, con 75 posibles casos/1.000 determinaciones. Se observa un triangulo geografico de mayor prevalencia entre las provincias de Sevilla, Huelva y Cadiz. Conclusiones El desarrollo de una estrategia oportunista mediante consulta informatica del colesterol-LDL en atencion primaria detecta un gran numero de sujetos con hipercolesterolemias severas que se podrian beneficiar de una intervencion precoz.
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- 2021
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27. Short-Term Gaseous Treatments Improve Rachis Browning in Red and White Table Grapes Stored at Low Temperature: Molecular Mechanisms Underlying Its Beneficial Effect
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Irene Romero, Raquel Rosales, M. Isabel Escribano, Carmen Merodio, M. Teresa Sanchez-Ballesta, Comisión Interministerial de Ciencia y Tecnología, CICYT (España), Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), and European Commission
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table grapes ,gaseous treatments ,low temperature ,rachis quality ,gene expression ,Organic Chemistry ,Temperature ,Gaseous treatments ,General Medicine ,Carbon Dioxide ,Ethylenes ,Catalysis ,Antioxidants ,Computer Science Applications ,Inorganic Chemistry ,Table grapes ,Fruit ,Rachis quality ,Low temperature ,Vitis ,Gene expression ,Gases ,Physical and Theoretical Chemistry ,Molecular Biology ,Spectroscopy - Abstract
This article belongs to the Special Issue Biochemical and Molecular Approaches to Postharvest Research., Short-term gaseous treatments improve rachis quality during table grape postharvest, but little is known about the mechanisms involved. In this work, we observed that the application of a 3-day CO2 treatment at 0 °C improved rachis browning of Superior Seedless and Red Globe bunches, affecting the non-enzymatic antioxidant system by reducing the total phenolic content, the antioxidant activity and the expression of different stilbene synthase genes. Lipid peroxidation levels revealed lower oxidative stress in CO2-treated rachis of both cultivars linked to the activation of the enzymatic antioxidant system. Furthermore, whereas a positive correlation was denoted between rachis browning and the accumulation of key ABA regulatory genes in Red Globe bunches, this effect was restricted to ACS1, a key synthetic ethylene gene, in Superior Seedless clusters. This work also corroborated the important role of ethylene-responsive factors in the beneficial effect of the gaseous treatment, not only in the berries but also in the rachis. Finally, the application of the gaseous treatment avoided the induction of cell wall-degrading enzyme-related genes in both cultivars, which could favor the maintenance of rachis quality. This work provides new insight into specific responses modulated by the gaseous treatment focused on mitigating rachis browning independently of the cultivar., This work was supported by CICYT projects AGL2017-85291-R (MINECO/AEI/FEDER, UE) and PID2020-113965RB-I00/AEI/10.13039/501100011033.
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- 2022
28. Postharvest High-CO
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Irene, Romero, M Isabel, Escribano, Carmen, Merodio, and M Teresa, Sanchez-Ballesta
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Cold Temperature ,Proteomics ,Fruit ,Carbon Dioxide ,Transcriptome - Abstract
Soft fruits are appreciated for their taste qualities and for being a source of health-promoting compounds. However, their postharvest is affected by their high respiratory rates and susceptibility to fungal decay. Our aim here is to provide a perspective on the application of short-term high-CO
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- 2022
29. EL ROL DE LAS TECNOLOGÍAS DE LA INFORMACIÓN Y COMUNICACIÓN EN LA INVESTIGACIÓN CIENTÍFICA EN ECUADOR
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Leonardo Raúl Murillo Quimiz, Martha Irene Romero Castro, Yanina Holanda Campozano Pilay, and Kirenia Maldonado Zúñiga
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Resource (biology) ,Information and Communications Technology ,business.industry ,Political science ,Exploratory research ,Library science ,Social environment ,Information technology ,Use of technology ,business ,Social knowledge - Abstract
La presente investigación propone un análisis al rol de las tecnologías de información y comunicación, su visión de progreso y asociación con la finalidad de fomentar el desarrollo a partir de los llamados estudios de ciencia y tecnología e involucrando al entorno social como ente de crecimiento global a través del recurso tecnológico. Empleando un tipo de estudio exploratorio donde se determinaron resultados cuantitativos que demuestran mediante el uso de la tecnología su aplicación para el desarrollo de la investigación científica en Ecuador, resaltando que las tecnologías de la información se entiende como construcción de conocimiento científico y social para un país. Dicho enfoque permitió conocer los elementos centrales que deben tomarse en cuenta a la hora de indagar sobre el rol de las de las tecnologías de información y comunicación para el desarrollo ecuatoriano.
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- 2021
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30. Functional characterization of VviDHN2 and VviDHN4 dehydrin isoforms from Vitis vinifera (L.): An in silico and in vitro approach
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Maria Vazquez-Hernandez, Irene Romero, Carmen Merodio, María I. Escribano, María T. Sanchez-Ballesta, Comisión Interministerial de Ciencia y Tecnología, CICYT (España), Ministerio de Economía y Competitividad (España), European Commission, Agencia Estatal de Investigación (España), and Ministerio de Ciencia, Innovación y Universidades (España)
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0106 biological sciences ,0301 basic medicine ,Gene isoform ,Physiology ,In silico ,Plant Science ,Intrinsically disordered proteins ,01 natural sciences ,Protein Structure, Secondary ,03 medical and health sciences ,Late embryogenesis abundant proteins ,Protein structure ,Genetics ,Protein Isoforms ,Computer Simulation ,Vitis ,Amino Acid Sequence ,Plant Proteins ,biology ,Chemistry ,030104 developmental biology ,Biochemistry ,Chaperone (protein) ,biology.protein ,Amino acid binding ,Function (biology) ,010606 plant biology & botany - Abstract
Dehydrins, a family of hydrophilic and intrinsically disordered proteins, are a subgroup of late embryogenesis abundant proteins that perform different protective roles in plants. Although the transition from a disordered to an ordered state has been associated with dehydrin function or interactions with specific partner molecules, the question of how the primary and secondary dehydrin protein structure is related to specific functions or target molecule preferences remains unresolved. This work addresses the in silico sequencing analysis and in vitro functional characterization of two dehydrin isoforms, VviDHN2 and VviDHN4, from Vitis vinifera. Conformational changes suggest potential interactions with a broad range of molecules and could point to more than one function. The in silico analysis showed differences in conserved segments, specific amino acid binding sequences, heterogeneity of structural properties and predicted sites accessible for various post-translational modifications between the sequence of both dehydrins. Moreover, in vitro functional analysis revealed that although they both showed slight antifungal activity, only VviDHN4 acts as a molecular shield that protects proteins from freezing and dehydration. VviDHN4 also demonstrated high potential as a chaperone and reactive oxygen species scavenger, in addition to presenting antifreeze activity, all of which confirms its multifunctional nature. Our findings highlight the significant role of Y-segments and the differential and specific amino acid composition of less conserved segments that are rich in polar/charged residues between S- and K-segments, coupled with post-translational modifications, in modulating and switching dehydrin biological function., This research was financed by the CICYT Spanish Projects AGL 2014-53081-R (MINECO) and AGL 2017-85291-R (MINECO/AEI/FEDER, UE). M. Vazquez-Hernandez acknowledges the support of the FPI program financed by the MICINN.
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- 2021
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31. Regulation of flavonoid biosynthesis pathway by a single or dual short-term CO2 treatment in black table grapes stored at low temperature
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Irene Domínguez, Carmen Merodio, M. Teresa Sanchez-Ballesta, M. Isabel Escribano, Irene Romero, Noemia Morales-Diaz, Comisión Interministerial de Ciencia y Tecnología, CICYT (España), Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, and Universidad de Almería
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0106 biological sciences ,0301 basic medicine ,chemistry.chemical_classification ,ABTS ,Physiology ,Flavonoid ,Catechin ,Plant Science ,01 natural sciences ,03 medical and health sciences ,Antioxidant capacity ,Horticulture ,chemistry.chemical_compound ,030104 developmental biology ,Flavonols ,Flavonoid biosynthesis ,chemistry ,Genetics ,Vitis vinifera ,010606 plant biology & botany - Abstract
The application of one or two short-term treatments with high levels of CO2 during 3 days at 0 °C maintained the quality of Autumn Royal table grapes (Vitis vinifera) during storage at 0 °C. We have analyzed how the application of a 3-day gaseous treatment, for one or two times at 0 °C, influences on common (VviPAL, VviCHS, VviCHI, VviF3′H, VviF3′5′H, VviF3H and VviLDOX) and branch-specific (VviFLS1, VviLAR1, VviLAR2, VviANR and VviUFGT) flavonoid gene expression in the skin of Autumn Royal table grapes. Likewise, the content of flavonols, flavan-3-ols and anthocyanins were identified with Q-TOF equipment and quantified by HPLC-quadrupole together with the total phenolic content and the antioxidant capacity by the ABTS and FRAP methods. Moreover, we have also used a solid-state voltammetry methodology to compare the effect of the application of one or two gaseous treatments in the skin of table grapes stored at 0 °C. Results revealed that the application of one or two gaseous treatments modulated the expression of flavonoid gene expression and the levels of catechin, in the case of one application, or quercetin-3-glucoside and five anthocyanins in fruit treated twice, maintaining their levels after 28 days of storage at 0 °C similar to those recorded in freshly harvested fruit. Satisfactorily, the electrochemical approach was useful to distinguish between treated and non-treated samples not only in the first stage of storage but also after 16 days., This work was supported by the spanish CICYT projects AGL2014-53081-R and AGL2017-85291-R (MINECO/AEI/FEDER, UE). I. Domínguez thanks the University of Almeria for the Hipatia postdoctoral contract.
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- 2020
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32. Biodiversity of heat-resistant ascomycetes from semi-arid soils in Argentina
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Alberto M. Stchigel, Ricardo Mario Comerio, Stella Maris Romero, Andrea Irene Romero, José F. Cano, Viviana Andrea Barrera, and Ernesto Rodríguez Andrade
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Heat resistant ,Agroforestry ,Soil water ,Biodiversity ,Plant Science ,Biology ,Arid ,Ecology, Evolution, Behavior and Systematics - Abstract
Artificial thermal shock conducted on 50 soil samples from a semi-arid geographic region (Catamarca and La Rioja provinces) in northern Argentina yielded 34 heat-resistant fungal strains. These strains were assigned to seventeen taxa in ten ascomycete genera: Arthrinium (1), Aspergillus (3), Epicoccum (1), Gilmaniella (1), Hamigera (2), Leiothecium (1), Penicillium (2), Talaromyces (4), Trichocladium (1), and Trichoderma (1). All strains were identified by phenotypic features, with molecular data additionally obtained for eleven strains. Five species are reported for the first time in Argentina.
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- 2020
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33. PLATAFORMA DE NEGOCIO PARA EL FORTALECIMIENTO ECONÓMICO Y COMPETITIVO EN LA ASOCIACIÓN DE APICULTORES 'AROMA&MIEL'
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Martha Irene Romero Castro, Marco Antonio Toala Pilay, Jenniffer Estefanía Sornoza Pilay, and Rosario Magdalena Romero Castro
- Abstract
La presente investigación tuvo por objetivo la implementación de una plataforma de negocio por internet para el fortalecimiento económico y competitivo en la asociación de apicultores "Aroma & Miel"en el recinto Quimis del cantón Jipijapa – Provincia de Manabí. La importancia de crear esta plataforma fue que constituyó una solución tecnológica, que permitió canalizar en forma efectiva y oportuna, la comercialización de los productos de los apicultores, aplicando técnicas de marketing apropiadas. La investigación está dividida en dos tipos: descriptiva, en la cual se aplicó un cuestionario a socios pertenecientes a la asociación de apicultores "Aroma & Miel" Documental por el apoyo mediante medios electrónicos y bibliográficos. En la investigación se utilizaron métodos científicos como: análisis – síntesis, histórico – lógico, observación, encuestas y estadístico – matemático. Los resultados determinaron que la plataforma es una herramienta sofisticada y sustentable que ha permitido potenciar la factibilidad de este proyecto en el ámbito comercial y tecnológico, aportando de forma significativa al desarrollo económico, competitivo y emprendedor, con la demanda de ventas de productos apícolas. Se concluye que la implementación de la plataforma de negocios provocó un gran impacto tecnológico, económico, competitivo y emprendedor a todos los habitantes de la zona, beneficiando directamente a más de cien familias, se evidencia la mejora en su economía y calidad de vida de acuerdo a lo que menciona el plan nacional de buen vivir. Es recomendable, que los productores del sector implementen la plataforma para establecer el negocio a través del Internet.
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- 2020
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34. Evaluation of the Morpho-Physiological, Biochemical and Molecular Responses of Contrasting Medicago truncatula Lines under Water Deficit Stress
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Imen Haddoudi, Hatem Ben Jouira, Loua Haddoudi, Naceur Djébali, Mohsen Hanana, Chedly Abdelly, Irene Romero, Sabrine Hdira, Ndiko Ludidi, Mounawer Badri, Asma Mahjoub, María T. Sanchez-Ballesta, Ministère de l’Enseignement Supérieur et de la Recherche Scientifique (Tunisie), and National Research Foundation (South Africa)
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Osmotic shock ,DREB1B ,Plant Science ,Medicago truncatula ,Biology ,Lipid peroxidation ,Biochemical parameters ,chemistry.chemical_compound ,water deficit stress ,Expression analysis ,Sugar ,Gene ,Ecology, Evolution, Behavior and Systematics ,Biomass (ecology) ,Ecology ,Morpho-physiological characters ,fungi ,Botany ,food and beverages ,biology.organism_classification ,Arid ,Water deficit stress ,Horticulture ,chemistry ,QK1-989 ,biochemical parameters ,morpho-physiological characters - Abstract
This article belongs to the Special Issue Molecular Analysis of Medicago Spp., Medicago truncatula is a forage crop of choice for farmers, and it is a model species for molecular research. The growth and development and subsequent yields are limited by water availability mainly in arid and semi-arid regions. Our study aims to evaluate the morpho-physiological, biochemical and molecular responses to water deficit stress in four lines (TN6.18, JA17, TN1.11 and A10) of M. truncatula. The results showed that the treatment factor explained the majority of the variation for the measured traits. It appeared that the line A10 was the most sensitive and therefore adversely affected by water deficit stress, which reduced its growth and yield parameters, whereas the tolerant line TN6.18 exhibited the highest root biomass production, a significantly higher increase in its total protein and soluble sugar contents, and lower levels of lipid peroxidation with greater cell membrane integrity. The expression analysis of the DREB1B gene using RT-qPCR revealed a tissue-differential expression in the four lines under osmotic stress, with a higher induction rate in roots of TN6.18 and JA17 than in A10 roots, suggesting a key role for DREB1B in water deficit tolerance in M. truncatula., This study was supported by the Tunisian Ministry of Higher Education and Scientific Research (CBBC02 LR15) and the National Research Foundation of South Africa (GUN 95358) in the framework of the Tunisian-South African Joint Research Collaboration Program (2016–2017).
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- 2021
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35. Expanding the
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Viviana A, Barrera, Leopoldo, Iannone, Andrea Irene, Romero, and Priscila, Chaverri
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Trichoderma ,Hypocreales ,Argentina ,Ecosystem ,Phylogeny - Abstract
A study was performed on a collection of 84 isolates from decaying plant tissues and soils in Argentina previously identified as
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- 2021
36. The Effect of Ethanol Treatment on the Quality of a New Table Grape Cultivar It 681–30 Stored at Low Temperature and after a 7-Day Shelf-Life Period at 20 °C: A Molecular Approach
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Irene Romero, M. Teresa Sanchez-Ballesta, M. Isabel Escribano, Carmen Merodio, Maria Vazquez-Hernandez, Manuel Tornel, Ministerio de Economía y Competitividad (España), Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, and Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
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0106 biological sciences ,Transcription, Genetic ,01 natural sciences ,chemistry.chemical_compound ,Weight loss ,Table grapes ,Browning ,Low temperature ,Vitis ,Cultivar ,Biology (General) ,Spectroscopy ,Plant Proteins ,0303 health sciences ,Chemistry ,food and beverages ,General Medicine ,Computer Science Applications ,Cold Temperature ,Horticulture ,Gases ,medicine.symptom ,QH301-705.5 ,Period (gene) ,low temperature ,Aquaporins ,Shelf life ,Article ,Catalysis ,Inorganic Chemistry ,03 medical and health sciences ,Food Preservation ,Food Quality ,medicine ,Physical and Theoretical Chemistry ,Molecular Biology ,QD1-999 ,030304 developmental biology ,Fruit quality ,Ethanol ,Organic Chemistry ,Table grape ,fungi ,fruit quality ,table grapes ,Maillard Reaction ,Food Storage ,Fruit ,Food Preservatives ,Postharvest ,gene expression ,Gene expression ,ethanol ,Volatilization ,Transcription Factors ,010606 plant biology & botany - Abstract
This article belongs to the Special Issue Gene Transcriptional Regulation in Crops during Postharvest., Despite the fact that many studies have examined the effectiveness of different gaseous postharvest treatments applied at low temperature to maintain table grape quality, the use of ethanol vapor has hardly been investigated. Thus, this work has studied the effectiveness of ethanol vapor-generating sachets in the maintenance of It 681–30 table grape quality, a new cultivar, during storage at low temperature and after the shelf-life period at 20 °C. To this end, various quality assessments have been carried out and the effect of the ethanol treatment on the expression of different genes (phenylpropanoids, transcription factors, PRs, and aquaporins) was determined. The results indicated that the application of ethanol vapor reduced the total decay incidence, weight loss, and the rachis browning index in It 681–30 grapes stored at 0 °C and after the shelf-life period at 20 °C, as compared to non-treated samples. Moreover, the modulation of STS7 and the different PR genes analyzed seems to play a part in the molecular mechanisms activated to cope with fungal attacks during the postharvest of It 681–30 grapes, and particularly during the shelf-life period at 20 °C. Furthermore, the expression of aquaporin transcripts was activated in samples showing higher weight loss. Although further work is needed to elucidate the role of ethanol in table grape quality, the results obtained in this work provide new insight into the transcriptional regulation triggered by ethanol treatment., This work was supported by CICYT projects AGL2014-53081-R and AGL2017-85291-R (MINECO/AEI/FEDER, UE).
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- 2021
37. Ophiodothella ruprechtiae comb. nov. (Melophia ruprechtiae; Ascomycota, Phyllachoraceae), based on anamorph and newly discovered teleomorph associated with leaf spots on Ruprechtia laxiflora in Tucumán (Argentina)
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Andrea Irene Romero, Mario C. N. Saparrat, and Myriam del Valle Catania
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Ascomycota ,biology ,Spots ,Botany ,Ruprechtia laxiflora ,Plant Science ,biology.organism_classification ,Ophiodothella ,Ecology, Evolution, Behavior and Systematics ,Phyllachoraceae - Published
- 2019
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38. A study on the degradation rates and the linearity of the performance decline of various thin film PV technologies
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Irene Romero-Fiances, Jose Pedro Silva, Ernesto M. Solís-Alemán, Gustavo Nofuentes, and Juan de la Casa
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Renewable Energy, Sustainability and the Environment ,020209 energy ,Seasonal decomposition ,Linearity ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Power (physics) ,Statistics ,0202 electrical engineering, electronic engineering, information engineering ,Range (statistics) ,Degradation (geology) ,General Materials Science ,Thin film ,0210 nano-technology ,Mathematics - Abstract
In most available analyses of the annual degradation rate (RD, in %/year) of thin film PV (TFPV), light-induced degradation is not separated from long-term degradation and degradation linearity is virtually not explored. A study on the performance loss of various TFPV technologies in Jaen (Spain) is presented with a double goal: (a) providing more reliable values of RD by avoiding the approaches above and (b) assessing the suitability of some performance metrics and statistical techniques intended to estimate RD, depending on PV degradation linearity. Thus, monthly time series were constructed with PR DC, temperature-corrected PR DC and experimental peak power for two grid-connected TFPV technologies -a-Si and a-Si/µc-Si- and four TFPV modules -a-Si, a-Si/µc-Si, CdTe and CIGS- tested outdoors over a five-and-a-half-year and a six-and-a-half-year period, respectively. Classical seasonal decomposition (CSD) and Year-on-Year (YOY) statistical techniques were subsequently employed. The confidence intervals of RD found for the a-Si and a-Si/µc-Si PV fields overlap for CSD and YOY over the five-and-a-half-year measurement period and its sub-periods analysed, with RD ∼ 1.3%/year. This holds for the three performance metrics under scrutiny, a fact that is attributable to the closely linear degradation experienced by both PV fields. Mainly due to nonlinearities, CSD applied to any of the three performance metrics for the four TFPV modules fails to provide reliable values of RD. However, the values of RD obtained by applying YOY to such performance metrics for the aforementioned four TFPV modules over the five-and-a-half-year measurement period and its sub-periods studied are within the uncertainty range.
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- 2019
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39. Expanding the Trichoderma harzianum species complex: Three new species from Argentine natural and cultivated ecosystems
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Andrea Irene Romero, Leopoldo Javier Iannone, Priscila Chaverri, and Viviana Andrea Barrera
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Systematics ,Mycobiota ,Species complex ,Translation elongation factor 1 alfa ,biology ,Phylogenetic tree ,Physiology ,Biological pest control ,3 new taxa ,food and beverages ,Trichoderma harzianum ,Cell Biology ,General Medicine ,biology.organism_classification ,Calmodulin ,Phylogenetics ,Botany ,Genetics ,Taxonomy (biology) ,Molecular Biology ,Ecology, Evolution, Behavior and Systematics ,Actin ,Phylogeny ,Taxonomy - Abstract
A study was performed on a collection of 84 isolates from decaying plant tissues and soils in Argentina previously identified as Trichoderma harzianum. Based on multiple phenotypic characters and multilocus phylogenetic analyses, 10 species were distinguished, three of which are described as new species: T. austroindianum, T. hortense, and T. syagri. Among the remaining seven identified species, the following five can be added to the Argentine mycobiota: T. afarasin, T. afroharzianum, T. endophyticum, T. guizhouense, and T. neotropicale. Trichoderma afroharzianum and T. endophyticum were the most frequent species found in the samples. In addition, a collection of isolates previously identified as T. harzianum with antagonistic abilities were reidentified as T. afroharzianum, thus highlighting the importance of correct identification of biocontrol species. Instituto Nacional de Tecnología Agropecuaria/[2019-PD-E4-I069-001]/INTA/Argentina Agencia Nacional de Promoción de la Investigación, el Desarrollo Tecnológico y la Innovación/[PICT2018-4436]/ANPCyT/Argentina UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro de Investigaciones en Productos Naturales (CIPRONA)
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- 2021
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40. Morpho-Physiological, Biochemical, and Genetic Responses to Salinity in Medicago truncatula
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María T. Sanchez-Ballesta, Hatem Ben Jouira, Mounawer Badri, Irene Romero, Sabrine Hdira, Chedly Abdelly, Asma Mahjoub, Loua Haddoudi, Ndiko Ludidi, Mohsen Hanana, and Ministère de l’Enseignement Supérieur et de la Recherche Scientifique (Tunisie)
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0106 biological sciences ,0301 basic medicine ,Ethylene ,Salt stress ,Plant Science ,Medicago truncatula ,AP2/ERF family ,01 natural sciences ,Article ,Biochemical parameters ,03 medical and health sciences ,chemistry.chemical_compound ,Gene ,Transcription factor ,Ecology, Evolution, Behavior and Systematics ,salt stress ,Abiotic component ,Medicago ,Ecology ,biology ,fungi ,Botany ,food and beverages ,Malondialdehyde ,biology.organism_classification ,Morpho-physiological traits ,morpho-physiological traits ,Salinity ,030104 developmental biology ,chemistry ,Biochemistry ,QK1-989 ,biochemical parameters ,010606 plant biology & botany - Abstract
This article belongs to the Special Issue Molecular Analysis of Medicago Spp., We used an integrated morpho-physiological, biochemical, and genetic approach to investigate the salt responses of four lines (TN1.11, TN6.18, JA17, and A10) of Medicago truncatula. Results showed that TN1.11 exhibited a high tolerance to salinity, compared with the other lines, recording a salinity induced an increase in soluble sugars and soluble proteins, a slight decrease in malondialdehyde (MDA) accumulation, and less reduction in plant biomass. TN6.18 was the most susceptible to salinity as it showed less plant weight, had elevated levels of MDA, and lower levels of soluble sugars and soluble proteins under salt stress. As transcription factors of the APETALA2/ethylene responsive factor (AP2/ERF) family play important roles in plant growth, development, and responses to biotic and abiotic stresses, we performed a functional characterization of MtERF1 gene. Real-time PCR analysis revealed that MtERF1 is mainly expressed in roots and is inducible by NaCl and low temperature. Additionally, under salt stress, a greater increase in the expression of MtERF1 was found in TN1.11 plants than that in TN6.18. Therefore, the MtERF1 pattern of expression may provide a useful marker for discriminating among lines of M. truncatula and can be used as a tool in breeding programs aiming at obtaining Medicago lines with improved salt tolerance., This study was supported by the Tunisian–South African project (2016–2017) and the Tunisian Ministry of Higher Education and Scientific Research (CBBC02 LR15).
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- 2021
41. Expression of Structural Flavonoid Biosynthesis Genes in Dark-Blue and White Myrtle Berries (
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Silvia, Medda, Maria Teresa, Sanchez-Ballesta, Irene, Romero, Leonarda, Dessena, and Maurizio, Mulas
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Communication ,fungi ,RT-qPCR ,food and beverages ,pigmentation ,flavonoids gene expression ,anthocyanins ,myrtle berry - Abstract
Within the myrtle (Myrtus communis L.) species, different genotypes may produce dark-blue berries or white berries depending on the peel color upon ripening. One dark-blue cultivar and one white myrtle cultivar were used to study the molecular mechanisms underlying flavonoid biosynthesis. The relative expression levels of common (PAL, CHS, CHI, DFR and LDOX) and specific (FLS, ANR, LAR and UFGT) flavonoid genes were analyzed during fruit development by means of quantitative real-time polymerase chain reaction (RT-qPCR). Moreover, the anthocyanin content was determined, and it showed an increase with the ripening of the berries of the dark-blue cultivar. The results showed an increased transcript abundance of PAL, CHI, DFR, LDOX and UFGT gene expression in the dark-blue cultivar compared to the white one, as well as a strong positive correlation between the changes in gene expression and anthocyanin accumulation. The transcript levels of UFGT showed sharp increases at 150 and 180 days after full blooming (DAF) in the dark-blue cultivar, which corresponded with anthocyanin accumulation. However, ripening seemed to modulate the expression of genes implicated in flavonols (i.e., FLS) and flavan-3-ols (i.e., LAR and ANR) in different manners. However, whereas FLS transcript accumulation increased at the end of the ripening period in the dark-blue cultivar, LAR and ANR gene expression decreased in both cultivars.
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- 2020
42. La informática forense desde un enfoque práctico
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Martha Irene Romero Castro, Miguel Angel Choez Chele, Cristhian José Álava Mero, Vicente Fray Romero Castro, Holger Benny Delgado Lucas, Miriam Adriana Castillo Merino, and Leonardo Raúl Murillo Quimiz
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- 2020
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43. Prevalence of severe hypercholesterolemia observed in different hospitals in Andalusia and Ceuta
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Teresa, Arrobas Velilla, Gema, Varo Sánchez, Irene, Romero García, Enrique, Melguizo Madrid, Firma Isabel, Rodríguez Sánchez, Antonio, León Justel, and Jacobo, Diaz Portillo
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Adult ,Adolescent ,Risk Factors ,Hypercholesterolemia ,Prevalence ,Humans ,Cholesterol, LDL ,Child ,Hospitals ,Retrospective Studies - Abstract
Severe hypercholesterolaemia is a major cardiovascular risk factor. Early detection and treatment can reduce the incidence of cardiovascular disease. Given the high prevalence of hypercholesterolaemia in Andalusia, the development of a screening strategy for its detection in Primary Care may be an efficient measure.To identify patients in Primary Care with severe hypercholesterolaemia that may increase their cardiovascular risk by reviewing LDL-cholesterol results in computerised laboratory systems.Observational, retrospective, multi-centre study in 16 hospitals in Andalusia and Ceuta. Anonymous analytical data were acquired from the different laboratory computer systems for the year 2018, and exclusively from Macarena Hospital for the year 2019.From a total of 1,969,035 determinations on≥18 years old, 2,791 patients (0.14%) were detected with LDL-cholesterol250mg/dl and from a total of 2.327.211 determinations studied in children under 18 years old, 3,804 patients (0.16%) were detected with LDL-cholesterol135mg/dL. The highest incidence of possible genetic hypercholesterolaemia in adults corresponded to the province of Seville with 23.6 cases/1,000 determinations, while in minors, the highest incidence corresponded to the province of Cadiz with 75 possible cases/1,000 determinations. A geographical triangle of greater prevalence is observed between the provinces of Seville, Huelva and Cadiz.The development of a screening strategy using a computerised review of LDL-cholesterol in Primary Care detects a large number of subjects with severe hypercholesterolaemia that could benefit from an early intervention.
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- 2020
44. Gafas electrónicas con sensores ultrasónicos para personas no videntes
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Kirenia Maldonado Zúñiga, Alberto Jesús Villacreses Córdova, Raquel Vera Velázquez, and Martha Irene Romero Castro
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Computer science ,Process (engineering) ,020209 energy ,0211 other engineering and technologies ,02 engineering and technology ,General Medicine ,Quality of life (healthcare) ,Human–computer interaction ,visual_art ,021105 building & construction ,Electronic component ,0202 electrical engineering, electronic engineering, information engineering ,visual_art.visual_art_medium ,Electronic communication ,Set (psychology) - Abstract
El objetivo de esta investigación fue desarrollar un prototipo tecnológico de gafas electrónicas que le permite a las personas no videntes a movilizarse en el entorno que los rodea, el cual les evita accidentes. La importancia de este proyecto consta en darles una calidad de vida a las personas no videntes, con el cumplimiento de los objetivos planteado se desarrolló este estratégico prototipo, en el que se detalla las funciones y característica técnicas de los diferentes componentes electrónicos que se utilizaron. Se realizó un análisis de la movilidad de las personas no videntes al momento de desplazarse de un lugar a otro, en el cual se detectaron dificultades que no les permitieron la movilidad. Se utilizaron métodos de investigación científica como, Historio-lógico, inducción-deducción, encuestas, observación y estadístico –matemático, permitieron las pautas necesarias para el proceso del estudio y el desarrollo de unas series de preguntas que se basa en encuestas y entrevistas que son primordiales para la validación de la investigación. Los resultados manifestaron los cambios significativos que se producen en la vida de las personas no videntes al utilizar las gafas electrónicas que responden a sus necesidades y disminuye los accidentes por los diferentes obstáculos, les brinda confianza para desplazarse independientemente, lo que los motiva a utilizarlas diariamente. Se concluyó con la implementación de un prototipo de gafas electrónicas con el sistema de comunicación electrónico, permite detectar obstáculos que provocan accidentes, de esta forma el usuario tiene confianza y comodidad.
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- 2020
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45. Estudios de la implementación de aguas tratadas asociadas a la extracción del petróleo en sistemas agropecuarios
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Julián Andrés Peláez Montoya, Ciro Ortiz Valdés, Jose Henry Velásquez Penagos, Viviana Irene Romero Ramírez, Luisa Fernanda Posada Velásquez, Guillermo Alonso Bueno Guzmán, Otoniel Pérez López, Gloria Estefanía Pastrana Aguirre, Diana Patricia Barajas Pardo, José Guillermo Velásquez Penagos, Jenniffer Zulay Tafur-Sanabria, Edgar Fernando Almansa Manrique, Victor Fabio Luna Mora, Diego Mauricio Pabón Leal, Sandra Xiomara Pulido Castro, Sonia Lucía Gutiérrez Parrado, José Orlando Arguello Tovar, and Oscar Javier Cerinza Murcia
- Abstract
En todo el mundo, el crecimiento demografico y la expansion economica estan incrementando la presion sobre los recursos de agua dulce, un fenomeno que se agrava ahora cada vez mas a causa del cambio climatico. Este recurso natural es fundamental para la produccion agricola, y su creciente escasez —que probablemente se intensificara en un contexto de cambio climatico—, tiene implicaciones muy importantes que pone a prueba la capacidad de la humanidad para alimentarse. Al mismo tiempo, tambien aumentara el consumo del recurso en las ciudades y la industria: asi, mientras que actualmente la agricultura supone el 70% del consumo de agua dulce en todo el mundo, el crecimiento de al menos un 50% esperado en la demanda de alimentos incrementara a su vez las necesidades hidricas del sector agricola. Frente a este panorama, el mayor uso de fuentes alternativas y no convencionales de agua, incluyendo los efluentes urbanos e industriales y la escorrentia superficial, surge como una valiosa alternativa, siempre que el agua sea tratada de forma adecuada. Las aguas residuales, particularmente, ademas de ayudar a hacer frente a la escasez de agua, tienen a menudo una elevada carga de nutrientes, por lo que en teoria serian un buen fertilizante. “Cuando se utilizan y manejan con seguridad para evitar riesgos para la salud y el medio ambiente, las aguas residuales pueden dejar de ser un problema Introduccion y convertirse en un activo” (FAO De Souza). Es asi como lo que antes se consideraba un problema, esto es, los vertimientos liquidos urbanos e industriales, ahora sea visto como una opcion frente a la escasez de agua. Las aguas residuales pueden usarse de manera segura para la produccion agricola directamente mediante el riego o indirectamente mediante la recarga de acuiferos, pero hacerlo requiere de investigacion y gestion diligente de los riesgos sanitarios a traves de un tratamiento adecuado o un uso apropiado. Con esta premisa en mente, en esta publicacion se presentan en forma resumida algunas de las experiencias realizadas dentro del marco del convenio entre Agrosavia y Ecopetrol que tiene como objetivo “aunar esfuerzos tecnicos, cientificos, operativos y financieros para el desarrollo de la investigacion sobre el uso y manejo integral de las aguas asociadas a la produccion de hidrocarburos en sistemas agropecuarios del area de influencia de Ecopetrol”.
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- 2020
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46. Sistemas productivos agrícolas y aguas tratadas asociadas a la extracción del petróleo
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Victor Fabio Luna Mora, Gloria Estefanía Pastrana Aguirre, Edgar Fernando Almansa Manrique, José Guillermo Velásquez Penagos, Julián Andrés Peláez Montoya, Ruth Lucena Marín Romero, Ricardo Botero Quintero, Viviana Irene Romero Ramírez, and Milady Ruiz Nieves
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- 2020
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47. Involvement of oligosaccharides and sucrose-related genes on sucrose retention in strawberries from ripening to shelf-life
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Ivan del Olmo, María I. Escribano, Maria Vazquez-Hernandez, María Blanch, Carmen Merodio, Irene Romero, María T. Sanchez-Ballesta, Comisión Interministerial de Ciencia y Tecnología, CICYT (España), Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), and European Commission
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Sucrose ,Ripening ,Horticulture ,Shelf life ,Trehalose ,chemistry.chemical_compound ,Invertase ,chemistry ,Postharvest ,Food science ,Raffinose ,Sugar ,Agronomy and Crop Science ,Food Science - Abstract
Sucrose is a key player in strawberry metabolism. However, the molecular mechanisms underlying sucrose status in strawberries during later ripening stages and postharvest storage remains quite limited. Therefore, we identified members of various gene families encoding key enzymes involved in sucrose metabolism, analyzed their expression profiles and determined the sugar content in strawberries at different ripening stages and postharvest treatments. Three different ripening stages around harvest time, almost red (AR), full red (FR) and dark red (DR) were analyzed, as well as after pre-treatment with high CO2 levels (18 % CO2, 2 d) during low temperature (LT) storage and further shelf-life at 20 °C. The accumulation of sucrose, hexoses, trehalose, myo-inositol, fructo-oligosaccharides (FOS) and raffinose family oligosaccharides (RFOs) was analyzed. Our results indicate that the transition from FR to DR stages was characterized by a prominent accumulation of hexoses, sucrose and a sharp decrease in the levels of FOS. We therefore suggest that FOS, in addition to their protective role in stressful conditions, are also important metabolic signals of the end of ripening process. The highest levels of RFOs was detected in strawberries at LT in air, making them a possible marker of damage, an idea reinforced too by the low RFOs and high myo-inositol quantities found in high CO2 protective treatment. Interestingly, the sucrose accumulation in fully ripe strawberries and in high CO2-treated ones was linked to a significant decrease in the expression of FvVIN2 (vacuolar invertase), an opposite trend to that observed in fruit stored in air. Furthermore, high levels of CO2 prevented both the upregulation of FvSS1 and the sharp increase in the expression of FvCWINV1 observed at low temperature in air. The efficiency of high CO2 pre-treatment on sucrose accumulation was particularly evident during the shelf-life period at 20 °C (SL) after LT storage. Our study provides new insights into how strawberries become sweet by retaining sucrose content. Additionally, our results clearly highlight the need to specify the sugar status at harvest to know the effectiveness of a treatment in maintaining quality attributes., This work was supported by the spanish CICYT project AGL2017-85291-R (MINECO/AEI/FEDER, UE).
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- 2020
48. Analysis of wild tomato introgression lines elucidates the genetic basis of transcriptome and metabolome variation underlying fruit traits and pathogen response
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Ilana Rogachev, Jules Beekwilder, Justin Lashbrooke, Sagit Meir, Nir Shahaf, Sayantan Panda, Asaph Aharoni, Yury Tikunov, Prashant D. Sonawane, Avinash Kamble, Samuel Bocobza, Jedrzej Szymanski, Pablo D. Cárdenas, Arnaud G. Bovy, Irene Romero de la Fuente, Dani Zamir, European Commission, European Research Council, Israel Science Foundation, Helmsley Charitable Trust, and Jeanne and Joseph Nissim Foundation for Life Sciences Research
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EXPRESSION ,Population ,Introgression ,SUSCEPTIBILITY ,Solanum ,Transcriptome ,Domestication ,PENNELLII ,03 medical and health sciences ,0302 clinical medicine ,Alkaloids ,Solanum lycopersicum ,Gene Expression Regulation, Plant ,Genetics ,Metabolome ,Life Science ,DISEASE RESISTANCE ,SPECTROMETRY DATA ,Wild tomato ,BIOSYNTHESIS ,BOTRYTIS-CINEREA ,education ,Gene ,POPULATION ,030304 developmental biology ,Disease Resistance ,Plant Diseases ,2. Zero hunger ,0303 health sciences ,education.field_of_study ,biology ,Fungi ,food and beverages ,15. Life on land ,biology.organism_classification ,ARABIDOPSIS ,GENOME ,Plant Breeding ,Phenotype ,Fruit ,BIOS Applied Metabolic Systems ,Gene pool ,EPS ,030217 neurology & neurosurgery ,Metabolic Networks and Pathways - Abstract
Wild tomato species represent a rich gene pool for numerous desirable traits lost during domestication. Here, we exploited an introgression population representing wild desert-adapted species and a domesticated cultivar to establish the genetic basis of gene expression and chemical variation accompanying the transfer of wild-species-associated fruit traits. Transcriptome and metabolome analysis of 580 lines coupled to pathogen sensitivity assays resulted in the identification of genomic loci associated with levels of hundreds of transcripts and metabolites. These associations occurred in hotspots representing coordinated perturbation of metabolic pathways and ripening-related processes. Here, we identify components of the Solanum alkaloid pathway, as well as genes and metabolites involved in pathogen defense and linking fungal resistance with changes in the fruit ripening regulatory network. Our results outline a framework for understanding metabolism and pathogen resistance during tomato fruit ripening and provide insights into key fruit quality traits., This project has received funding from the European Research Council (grant agreement 204575-SAMIT), EU Framework Program FP7/2007–2013 (grant agreement 613692-TriForC) and the Israel Science Foundation (grant number 1805/15). We thank the Adelis Foundation, Leona M. and Harry B. Helmsley Charitable Trust, Jeanne and Joseph Nissim Foundation for Life Sciences, Tom and Sondra Rykoff Family Foundation Research and Raymond Burton Plant Genome Research Fund for supporting A.A.’s laboratory activity. A.K. is thankful for a short-term EMBO fellowship (EMBO-ASTF-146-2014).
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- 2020
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49. MHC Class I Molecules and Cancer Progression: Lessons Learned from Preclinical Mouse Models
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Ignacio Algarra, Irene Romero, and Angel Garcia-Lora
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biology ,Human leukocyte antigen ,Major histocompatibility complex ,medicine.disease ,Primary tumor ,Natural killer cell ,medicine.anatomical_structure ,Antigen ,MHC class I ,Immunology ,Cancer cell ,biology.protein ,medicine ,Cancer research ,CD8 - Abstract
Major histocompatibility complex (MHC) class I molecules are expressed on the surface of nucleated cells and present peptides derived from endogenous proteins to CD8+ T lymphocytes. In tumor cells, MHC-I molecules may present peptides derived from tumor-associated antigens, which are new proteins expressed or overexpressed in tumor cells. Presentation of these new peptides may allow recognition and destruction of tumor cells by CD8+ T lymphocytes. Loss of MHC-I expression on tumor cells is a widespread and frequent mechanism developed to escape from immunosurveillance. Alteration in MHC-I in both human and murine experimental tumors has been widely reported. This chapter summarizes the role of MHC class I expression on cancer cells in tumor and metastatic progression, as well as its effect on the outcome of immunotherapy in murine experimental tumors. Results were obtained from different tumor clones derived from a fibrosarcoma induced by methylcholanthrene in BALB/c mice, in addition to spontaneous metastases derived from these tumor clones, during more than 30 years of study on murine cancer model GR9. In this tumor model, results show an inverse correlation between MHC-I expression on tumor cells and primary tumor growth, i.e., MHC-I-negative tumors grew more rapidly compared to MHC-I-positive tumors. In contrast, a direct correlation was found between MHC-I expression on primary tumors and spontaneous metastatic capacity. Immunotherapy as an antimetastatic treatment was completely effective against MHC-I highly positive tumors and was partially effective on tumors with intermediate level of MHC-I expression.
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- 2020
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50. Nuevos registros de Micropeltidaceae (Ascomycota) en Podocarpus parlatorei (Podocarpaceae) en las Yungas, Argentin
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María Cecilia Fátima Gallo, Andrea Irene Romero, and Myriam del Valle Catania
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Micropeltis ,Podocarpus ,biology ,Plant Science ,MICROPELTIDACEAE ,biology.organism_classification ,Micropeltidaceae ,purl.org/becyt/ford/1 [https] ,Ciencias Biológicas ,Geography ,DICTYOPELTIS ,FOLIAR FUNGI ,Podocarpus parlatorei ,YUNGAS ,Micología ,purl.org/becyt/ford/1.6 [https] ,Podocarpaceae ,Humanities ,CIENCIAS NATURALES Y EXACTAS - Abstract
New records of Micropeltidaceae are reported on leaves of Podocarpus parlatorei leaves in the Yungas, Argentina. A new variety, Micropeltis albomarginata var. macrospora is proposed. Dictyopeltis applanata is recorded for the first time in Argentina. Descriptions, illustrations, data on geographical distribution, habitat, and notes are provided. Se reportan nuevos registros de Micropeltidaceae sobre hojas de Podocarpus parlatorei en las Yungas, Argentina. Se propone una nueva variedad, Micropeltis albomarginata var. macrospora. Se registra por primera vez para la Argentina a Dictyopeltis applanata. Se proporcionan descripciones, ilustraciones, datos de distribución geográfica y hábitat. Fil: Gallo, María Cecilia Fátima. Universidad Nacional de Tucumán. Instituto de Biotecnología Farmacéutica y Alimentaria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Biotecnología Farmacéutica y Alimentaria; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina Fil: Romero, Andrea Irene. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina Fil: Catania, Myriam del Valle. Fundación Miguel Lillo. Dirección de Botánica; Argentina
- Published
- 2018
- Full Text
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