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9. Population genomic analysis of Aegilops tauschii identifies targets for bread wheat improvement

Author

Gaurav, Kumar, Arora, Sanu, Silva, Paula, Sánchez-Martín, Javier, Horsnell, Richard, Gao, Liangliang, Brar, Gurcharn S, Widrig, Victoria, John Raupp, W, Singh, Narinder, Wu, Shuangye, Kale, Sandip M, Chinoy, Catherine, Nicholson, Paul, Quiroz-Chávez, Jesús, Simmonds, James, Hayta, Sadiye, Smedley, Mark A, Harwood, Wendy, Pearce, Suzannah, Gilbert, David, Kangara, Ngonidzashe, Gardener, Catherine, Forner-Martínez, Macarena, Liu, Jiaqian, Yu, Guotai, Boden, Scott A, Pascucci, Attilio, Ghosh, Sreya, Hafeez, Amber N, O’Hara, Tom, Waites, Joshua, Cheema, Jitender, Steuernagel, Burkhard, Patpour, Mehran, Justesen, Annemarie Fejer, Liu, Shuyu, Rudd, Jackie C, Avni, Raz, Sharon, Amir, Steiner, Barbara, Kirana, Rizky Pasthika, Buerstmayr, Hermann, Mehrabi, Ali A, Nasyrova, Firuza Y, Chayut, Noam, Matny, Oadi, Steffenson, Brian J, Sandhu, Nitika, Chhuneja, Parveen, Lagudah, Evans, Elkot, Ahmed F, Tyrrell, Simon, Bian, Xingdong, Davey, Robert P, Simonsen, Martin, Schauser, Leif, Tiwari, Vijay K, Randy Kutcher, H, Hucl, Pierre, Li, Aili, Liu, Deng-Cai, Mao, Long, Xu, Steven, Brown-Guedira, Gina, Faris, Justin, Dvorak, Jan, Luo, Ming-Cheng, Krasileva, Ksenia, Lux, Thomas, Artmeier, Susanne, Mayer, Klaus FX, Uauy, Cristobal, Mascher, Martin, Bentley, Alison R, Keller, Beat, Poland, Jesse, and Wulff, Brande BH

Subjects
Genetics, Biotechnology, Human Genome, Aegilops, Bread, Genomics, Metagenomics, Plant Breeding, Triticum
Abstract

Aegilops tauschii, the diploid wild progenitor of the D subgenome of bread wheat, is a reservoir of genetic diversity for improving bread wheat performance and environmental resilience. Here we sequenced 242 Ae. tauschii accessions and compared them to the wheat D subgenome to characterize genomic diversity. We found that a rare lineage of Ae. tauschii geographically restricted to present-day Georgia contributed to the wheat D subgenome in the independent hybridizations that gave rise to modern bread wheat. Through k-mer-based association mapping, we identified discrete genomic regions with candidate genes for disease and pest resistance and demonstrated their functional transfer into wheat by transgenesis and wide crossing, including the generation of a library of hexaploids incorporating diverse Ae. tauschii genomes. Exploiting the genomic diversity of the Ae. tauschii ancestral diploid genome permits rapid trait discovery and functional genetic validation in a hexaploid background amenable to breeding.

Published
2022

10. Multiple wheat genomes reveal global variation in modern breeding

Author

Walkowiak, Sean, Gao, Liangliang, Monat, Cecile, Haberer, Georg, Kassa, Mulualem T, Brinton, Jemima, Ramirez-Gonzalez, Ricardo H, Kolodziej, Markus C, Delorean, Emily, Thambugala, Dinushika, Klymiuk, Valentyna, Byrns, Brook, Gundlach, Heidrun, Bandi, Venkat, Siri, Jorge Nunez, Nilsen, Kirby, Aquino, Catharine, Himmelbach, Axel, Copetti, Dario, Ban, Tomohiro, Venturini, Luca, Bevan, Michael, Clavijo, Bernardo, Koo, Dal-Hoe, Ens, Jennifer, Wiebe, Krystalee, N’Diaye, Amidou, Fritz, Allen K, Gutwin, Carl, Fiebig, Anne, Fosker, Christine, Fu, Bin Xiao, Accinelli, Gonzalo Garcia, Gardner, Keith A, Fradgley, Nick, Gutierrez-Gonzalez, Juan, Halstead-Nussloch, Gwyneth, Hatakeyama, Masaomi, Koh, Chu Shin, Deek, Jasline, Costamagna, Alejandro C, Fobert, Pierre, Heavens, Darren, Kanamori, Hiroyuki, Kawaura, Kanako, Kobayashi, Fuminori, Krasileva, Ksenia, Kuo, Tony, McKenzie, Neil, Murata, Kazuki, Nabeka, Yusuke, Paape, Timothy, Padmarasu, Sudharsan, Percival-Alwyn, Lawrence, Kagale, Sateesh, Scholz, Uwe, Sese, Jun, Juliana, Philomin, Singh, Ravi, Shimizu-Inatsugi, Rie, Swarbreck, David, Cockram, James, Budak, Hikmet, Tameshige, Toshiaki, Tanaka, Tsuyoshi, Tsuji, Hiroyuki, Wright, Jonathan, Wu, Jianzhong, Steuernagel, Burkhard, Small, Ian, Cloutier, Sylvie, Keeble-Gagnère, Gabriel, Muehlbauer, Gary, Tibbets, Josquin, Nasuda, Shuhei, Melonek, Joanna, Hucl, Pierre J, Sharpe, Andrew G, Clark, Matthew, Legg, Erik, Bharti, Arvind, Langridge, Peter, Hall, Anthony, Uauy, Cristobal, Mascher, Martin, Krattinger, Simon G, Handa, Hirokazu, Shimizu, Kentaro K, Distelfeld, Assaf, Chalmers, Ken, Keller, Beat, Mayer, Klaus FX, Poland, Jesse, Stein, Nils, McCartney, Curt A, Spannagl, Manuel, Wicker, Thomas, and Pozniak, Curtis J

Subjects
Genetics, Biotechnology, Human Genome, Acclimatization, Animals, Centromere, Chromosome Mapping, Cloning, Molecular, DNA Copy Number Variations, DNA Transposable Elements, Edible Grain, Genes, Plant, Genetic Introgression, Genetic Variation, Genome, Plant, Genomics, Haplotypes, Insecta, Internationality, NLR Proteins, Plant Breeding, Plant Diseases, Plant Proteins, Polymorphism, Single Nucleotide, Polyploidy, Triticum, General Science & Technology
Abstract

Advances in genomics have expedited the improvement of several agriculturally important crops but similar efforts in wheat (Triticum spp.) have been more challenging. This is largely owing to the size and complexity of the wheat genome1, and the lack of genome-assembly data for multiple wheat lines2,3. Here we generated ten chromosome pseudomolecule and five scaffold assemblies of hexaploid wheat to explore the genomic diversity among wheat lines from global breeding programs. Comparative analysis revealed extensive structural rearrangements, introgressions from wild relatives and differences in gene content resulting from complex breeding histories aimed at improving adaptation to diverse environments, grain yield and quality, and resistance to stresses4,5. We provide examples outlining the utility of these genomes, including a detailed multi-genome-derived nucleotide-binding leucine-rich repeat protein repertoire involved in disease resistance and the characterization of Sm16, a gene associated with insect resistance. These genome assemblies will provide a basis for functional gene discovery and breeding to deliver the next generation of modern wheat cultivars.

Published
2020

12. Global genomic analyses of wheat powdery mildew reveal association of pathogen spread with historical human migration and trade

Author

Sotiropoulos, Alexandros G., Arango-Isaza, Epifanía, Ban, Tomohiro, Barbieri, Chiara, Bourras, Salim, Cowger, Christina, Czembor, Paweł C., Ben-David, Roi, Dinoor, Amos, Ellwood, Simon R., Graf, Johannes, Hatta, Koichi, Helguera, Marcelo, Sánchez-Martín, Javier, McDonald, Bruce A., Morgounov, Alexey I., Müller, Marion C., Shamanin, Vladimir, Shimizu, Kentaro K., Yoshihira, Taiki, Zbinden, Helen, Keller, Beat, and Wicker, Thomas

Published
2022
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13. Pyramiding of transgenic immune receptors from primary and tertiary wheat gene pools improves powdery mildew resistance in the field

Author

Koller, Teresa; https://orcid.org/0000-0002-3443-8858, Camenzind, Marcela; https://orcid.org/0009-0005-4773-7231, Jung, Esther, Brunner, Susanne; https://orcid.org/0000-0002-4473-3199, Herren, Gerhard; https://orcid.org/0000-0002-3963-4815, Armbruster, Cygni, Keller, Beat; https://orcid.org/0000-0003-2379-9225, Koller, Teresa; https://orcid.org/0000-0002-3443-8858, Camenzind, Marcela; https://orcid.org/0009-0005-4773-7231, Jung, Esther, Brunner, Susanne; https://orcid.org/0000-0002-4473-3199, Herren, Gerhard; https://orcid.org/0000-0002-3963-4815, Armbruster, Cygni, and Keller, Beat; https://orcid.org/0000-0003-2379-9225

Abstract

Introgression of resistance genes from wild or related species is a common strategy to improve disease resistance of wheat cultivars. Pm17 is a gene that confers powdery mildew resistance in wheat. It encodes an NLR type of immune receptor and was introgressed from rye to wheat as part of the 1RS chromosome arm translocation several decades ago. So far it was not possible to separate Pm17 from its co-introgressed rye genes due to suppressed recombination. Here we tested transgenic Bobwhite wheat, overexpressing Pm17 without any other rye genes, in the field. Four transgenic events showed high levels of PM17 protein accumulation, strong powdery mildew resistance and no pleiotropic effects during three field seasons. We used a combined approach of transgene insertion and crossbreeding to generate lines co-expressing Pm17 and Pm3, or Pm17 and Pm8, respectively. Blumeria graminis f.sp. tritici infection tests confirmed additive, race-specific resistance of the two pyramided transgenes in lines Pm17+Pm3b and Pm17+Pm8. Furthermore, pyramided lines showed strong powdery mildew resistance during three field seasons. We conclude that the combination of overexpressed NLR genes from the extended gene pool broadens and diversifies wheat disease resistance.

Published
2024

14. Breeding for durable resistance against biotrophic fungal pathogens using transgenes from wheat

Author

Camenzind, Marcela; https://orcid.org/0009-0005-4773-7231, Koller, Teresa; https://orcid.org/0000-0002-3443-8858, Armbruster, Cygni, Jung, Esther, Brunner, Susanne; https://orcid.org/0000-0002-4473-3199, Herren, Gerhard; https://orcid.org/0000-0002-3963-4815, Keller, Beat; https://orcid.org/0000-0003-2379-9225, Camenzind, Marcela; https://orcid.org/0009-0005-4773-7231, Koller, Teresa; https://orcid.org/0000-0002-3443-8858, Armbruster, Cygni, Jung, Esther, Brunner, Susanne; https://orcid.org/0000-0002-4473-3199, Herren, Gerhard; https://orcid.org/0000-0002-3963-4815, and Keller, Beat; https://orcid.org/0000-0003-2379-9225

Abstract

Breeding for resistant crops is a sustainable way to control disease and relies on the introduction of novel resistance genes. Here, we tested three strategies on how to use transgenes from wheat to achieve durable resistance against fungal pathogens in the field. First, we tested the highly effective, overexpressed single transgene Pm3e in the background of spring wheat cultivar Bobwhite in a long-term field trial over many years. Together with previous results, this revealed that transgenic wheat line Pm3e#2 conferred complete powdery mildew resistance during a total of nine field seasons without a negative impact on yield. Furthermore, overexpressed Pm3e provided resistance to powdery mildew isolates from our worldwide collection when crossed into the elite wheat cultivar Fiorina. Second, we pyramided the four overexpressed transgenes Pm3a, Pm3b, Pm3d, and Pm3f in the background of cultivar Bobwhite and showed that the pyramided line Pm3a,b,d,f was completely resistant to powdery mildew in five field seasons. Third, we performed field trials with three barley lines expressing adult plant resistance gene Lr34 from wheat during three field seasons. Line GLP8 expressed Lr34 under control of the pathogen-inducible Hv-Ger4c promoter and provided partial barley powdery mildew and leaf rust resistance in the field with small, negative effects on yield components which might need compensatory breeding. Overall, our study demonstrates and discusses three successful strategies for achieving fungal disease resistance of wheat and barley in the field using transgenes from wheat. These strategies might confer long-term resistance if applied in a sustainable way. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s11032-024-01451-2.

Published
2024

22. Adaptive diversification through structural variation in barley

Author

Jayakodi, Murukarthick, primary, Lu, Qiongxian, additional, Pidon, Helene, additional, Rabanus-Wallace, M. Timothy, additional, Bayer, Micha, additional, Lux, Thomas, additional, Guo, Yu, additional, Jaegle, Benjamin, additional, Badea, Ana, additional, Bekele, Wubishet, additional, Brar, Gurcharn, additional, Braune, Katarzyna, additional, Bunk, Boyke, additional, Chalmers, Kenneth, additional, Chapman, Brett, additional, Jorgensen, Morten Egevang, additional, Feng, Jia-Wu, additional, Feser, Manuel, additional, Fiebig, Anne, additional, Gundlach, Heidrun, additional, Guo, Wenbin, additional, Haberer, Georg, additional, Hansson, Mats, additional, Himmelbach, Axel, additional, Hoffie, Iris, additional, Hoffie, Robert, additional, Hu, Haifei, additional, Isobe, Sachiko, additional, Koenig, Patrick, additional, Kale, Sandip, additional, Kamal, Nadia, additional, Keeble-Gagnere, Gabriel, additional, Keller, Beat, additional, Knauft, Manuela, additional, Koppolu, Ravi, additional, Krattinger, Simon, additional, Kumlehn, Jochen, additional, Langridge, Peter, additional, Li, Chengdao, additional, Marone, Marina, additional, Maurer, Andreas, additional, Mayer, Klaus, additional, Melzer, Michael, additional, Muehlbauer, Gary, additional, Murozuka, Emiko, additional, Padmarasu, Sudharsan, additional, Perovic, Dragan, additional, Pillen, Klaus, additional, Pin, Pierre, additional, Pozniak, Curtis, additional, Ramsay, Luke, additional, Pedas, Pai Rosager, additional, Rutten, Twan, additional, Sakuma, Shun, additional, Sato, Kazuhiro, additional, Schueler, Danuta, additional, Schmutzer, Thomas, additional, Scholz, Uwe, additional, Schreiber, Miriam, additional, Shirasawa, Kenta, additional, Simpson, Craig, additional, Skadhauge, Birgitte, additional, Spannagl, Manuel, additional, Steffenson, Brian, additional, Thomsen, Hanne, additional, Tibbits, Josquin, additional, Nielsen, Martin Toft Simmelsgaard, additional, Trautewig, Corinna, additional, Vequaud, Dominique, additional, Voss, Cynthia, additional, Wang, Penghao, additional, Waugh, Robbie, additional, Westcott, Sharon, additional, Rasmussen, Magnus Wohlfahrt, additional, Zhang, Runxuan, additional, Zhang, Xiao-Qi, additional, Wicker, Thomas, additional, Dockter, Christoph, additional, Mascher, Martin, additional, and Stein, Nils, additional

Published
2024
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23. Kommentar zur Schaffhauser Verwaltungsrechtspflege - Verwaltungsrechtspflegegesetz (VRG) – Justizgesetz (JG)

Author

Baeckert, Andreas, additional, Baumgartner-Spahn, Cristina, additional, Bilger, Stefan, additional, Bollinger, Susanne, additional, Dajcar, Nina, additional, Fratschöl, Alfons, additional, Greh, Natalie, additional, Heingärtner, Nicole, additional, Herrmann, Oliver, additional, Honegger, Natascha, additional, Hotz, Basil, additional, Keller, Beat, additional, Marti, Arnold, additional, Meyer, Kilian, additional, Moll, Beatrice, additional, Rihs, Alexander, additional, Ritzmann, Christian, additional, Spahn, Patrick, additional, Sulzberger, Beat, additional, Sutter, Daniel, additional, Tektas, Nihat, additional, Waldvogel, Konrad, additional, and Weil, Dina, additional

Published
2021
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24. Purification of High Molecular Weight Genomic DNA from Powdery Mildew for Long-Read Sequencing.

Author

Feehan, Joanna M, Scheibel, Katherine E, Bourras, Salim, Underwood, William, Keller, Beat, and Somerville, Shauna C

Subjects
Microbiology, Biological Sciences, Genetics, Human Genome, Biotechnology, Ascomycota, DNA, Fungal, Genome, Fungal, Molecular Weight, Plant Diseases, Sequence Analysis, DNA, Spores, Fungal, Issue 121, fungus, genomic DNA, high molecular weight DNA, obligate pathogen, powdery mildew, sequencing, Biochemistry and Cell Biology, Psychology, Cognitive Sciences, Biochemistry and cell biology
Abstract

The powdery mildew fungi are a group of economically important fungal plant pathogens. Relatively little is known about the molecular biology and genetics of these pathogens, in part due to a lack of well-developed genetic and genomic resources. These organisms have large, repetitive genomes, which have made genome sequencing and assembly prohibitively difficult. Here, we describe methods for the collection, extraction, purification and quality control assessment of high molecular weight genomic DNA from one powdery mildew species, Golovinomyces cichoracearum. The protocol described includes mechanical disruption of spores followed by an optimized phenol/chloroform genomic DNA extraction. A typical yield was 7 µg DNA per 150 mg conidia. The genomic DNA that is isolated using this procedure is suitable for long-read sequencing (i.e., > 48.5 kbp). Quality control measures to ensure the size, yield, and purity of the genomic DNA are also described in this method. Sequencing of the genomic DNA of the quality described here will allow for the assembly and comparison of multiple powdery mildew genomes, which in turn will lead to a better understanding and improved control of this agricultural pathogen.

Published
2017

25. Chromosome-scale genome assembly provides insights into rye biology, evolution and agronomic potential

Author

Rabanus-Wallace, M. Timothy, Hackauf, Bernd, Mascher, Martin, Lux, Thomas, Wicker, Thomas, Gundlach, Heidrun, Baez, Mariana, Houben, Andreas, Mayer, Klaus F. X., Guo, Liangliang, Poland, Jesse, Pozniak, Curtis J., Walkowiak, Sean, Melonek, Joanna, Praz, Coraline R., Schreiber, Mona, Budak, Hikmet, Heuberger, Matthias, Steuernagel, Burkhard, Wulff, Brande, Börner, Andreas, Byrns, Brook, Čížková, Jana, Fowler, D. Brian, Fritz, Allan, Himmelbach, Axel, Kaithakottil, Gemy, Keilwagen, Jens, Keller, Beat, Konkin, David, Larsen, Jamie, Li, Qiang, Myśków, Beata, Padmarasu, Sudharsan, Rawat, Nidhi, Sesiz, Uğur, Biyiklioglu-Kaya, Sezgi, Sharpe, Andy, Šimková, Hana, Small, Ian, Swarbreck, David, Toegelová, Helena, Tsvetkova, Natalia, Voylokov, Anatoly V., Vrána, Jan, Bauer, Eva, Bolibok-Bragoszewska, Hanna, Doležel, Jaroslav, Hall, Anthony, Jia, Jizeng, Korzun, Viktor, Laroche, André, Ma, Xue-Feng, Ordon, Frank, Özkan, Hakan, Rakoczy-Trojanowska, Monika, Scholz, Uwe, Schulman, Alan H., Siekmann, Dörthe, Stojałowski, Stefan, Tiwari, Vijay K., Spannagl, Manuel, and Stein, Nils

Published
2021
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34. Corrigendum

Author

Keller, Beat and Yu, Dazhao

Published
2019

40. A chromosome-based draft sequence of the hexaploid bread wheat (Triticum aestivum) genome

Author

Consortium, The International Wheat Genome Sequencing, Mayer, Klaus FX, Rogers, Jane, Doležel, Jaroslav, Pozniak, Curtis, Eversole, Kellye, Feuillet, Catherine, Gill, Bikram, Friebe, Bernd, Lukaszewski, Adam J, Sourdille, Pierre, Endo, Takashi R, Kubaláková, Marie, Číhalíková, Jarmila, Dubská, Zdeňka, Vrána, Jan, Šperková, Romana, Šimková, Hana, Febrer, Melanie, Clissold, Leah, McLay, Kirsten, Singh, Kuldeep, Chhuneja, Parveen, Singh, Nagendra K, Khurana, Jitendra, Akhunov, Eduard, Choulet, Frédéric, Alberti, Adriana, Barbe, Valérie, Wincker, Patrick, Kanamori, Hiroyuki, Kobayashi, Fuminori, Itoh, Takeshi, Matsumoto, Takashi, Sakai, Hiroaki, Tanaka, Tsuyoshi, Wu, Jianzhong, Ogihara, Yasunari, Handa, Hirokazu, Maclachlan, P Ron, Sharpe, Andrew, Klassen, Darrin, Edwards, David, Batley, Jacqueline, Olsen, Odd-Arne, Sandve, Simen Rød, Lien, Sigbjørn, Steuernagel, Burkhard, Wulff, Brande, Caccamo, Mario, Ayling, Sarah, Ramirez-Gonzalez, Ricardo H, Clavijo, Bernardo J, Wright, Jonathan, Pfeifer, Matthias, Spannagl, Manuel, Martis, Mihaela M, Mascher, Martin, Chapman, Jarrod, Poland, Jesse A, Scholz, Uwe, Barry, Kerrie, Waugh, Robbie, Rokhsar, Daniel S, Muehlbauer, Gary J, Stein, Nils, Gundlach, Heidrun, Zytnicki, Matthias, Jamilloux, Véronique, Quesneville, Hadi, Wicker, Thomas, Faccioli, Primetta, Colaiacovo, Moreno, Stanca, Antonio Michele, Budak, Hikmet, Cattivelli, Luigi, Glover, Natasha, Pingault, Lise, Paux, Etienne, Sharma, Sapna, Appels, Rudi, Bellgard, Matthew, Chapman, Brett, Nussbaumer, Thomas, Bader, Kai Christian, Rimbert, Hélène, Wang, Shichen, Knox, Ron, Kilian, Andrzej, Alaux, Michael, Alfama, Françoise, Couderc, Loïc, Guilhot, Nicolas, Viseux, Claire, Loaec, Mikaël, Keller, Beat, and Praud, Sebastien

Subjects
Agricultural, Veterinary and Food Sciences, Biological Sciences, Genetics, Human Genome, Bread, Chromosomes, Plant, Evolution, Molecular, Gene Order, Genetic Variation, Genome, Plant, Molecular Sequence Annotation, Phylogeny, Plant Proteins, Polyploidy, Sequence Analysis, DNA, Transcriptome, Triticum, International Wheat Genome Sequencing Consortium, General Science & Technology
Abstract

An ordered draft sequence of the 17-gigabase hexaploid bread wheat (Triticum aestivum) genome has been produced by sequencing isolated chromosome arms. We have annotated 124,201 gene loci distributed nearly evenly across the homeologous chromosomes and subgenomes. Comparative gene analysis of wheat subgenomes and extant diploid and tetraploid wheat relatives showed that high sequence similarity and structural conservation are retained, with limited gene loss, after polyploidization. However, across the genomes there was evidence of dynamic gene gain, loss, and duplication since the divergence of the wheat lineages. A high degree of transcriptional autonomy and no global dominance was found for the subgenomes. These insights into the genome biology of a polyploid crop provide a springboard for faster gene isolation, rapid genetic marker development, and precise breeding to meet the needs of increasing food demand worldwide.

Published
2014

41. Pyramiding of transgenic immune receptors from primary and tertiary wheat gene pools improves powdery mildew resistance in the field.

Author

Koller, Teresa, Camenzind, Marcela, Brunner, Susanne, Herren, Gerhard, Armbruster, Cygni, and Keller, Beat

Subjects
WHEAT, POWDERY mildew diseases, ERYSIPHE graminis, PYRAMIDS, GENES, TRANSGENES
Abstract

Introgression of resistance genes from wild or related species is a common strategy to improve disease resistance of wheat cultivars. Pm17 is a gene that confers powdery mildew resistance in wheat. It encodes an NLR type of immune receptor and was introgressed from rye to wheat as part of the 1RS chromosome arm translocation several decades ago. So far it has not been possible to separate Pm17 from its co-introgressed rye genes due to suppressed recombination. Here we tested in the field transgenic Bobwhite wheat overexpressing Pm17 without any other rye genes. Four transgenic events showed high levels of PM17 protein accumulation, strong powdery mildew resistance, and no pleiotropic effects during three field seasons. We used a combined approach of transgene insertion and cross-breeding to generate lines co-expressing Pm17 and Pm3 , or Pm17 and Pm8. Blumeria graminis f. sp. tritici infection tests confirmed additive, race-specific resistance of the two pyramided transgenes in lines Pm17+Pm3b and Pm17+Pm8. Furthermore, pyramided lines showed strong powdery mildew resistance during three field seasons. We conclude that the combination of overexpressed NLR genes from the extended gene pool broadens and diversifies wheat disease resistance. [ABSTRACT FROM AUTHOR]

Published
2024
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42. Linking photosynthesis and yield reveals a strategy to improve light use efficiency in a climbing bean breeding population.

Author

Keller, Beat, Soto, Jonatan, Steier, Angelina, Portilla-Benavides, Ana Elisabeth, Raatz, Bodo, Studer, Bruno, Walter, Achim, Muller, Onno, and Urban, Milan O

Subjects
*COMMON bean, *PHOTOSYNTHESIS, *SINGLE nucleotide polymorphisms, *CHLOROPLAST formation, *CHLOROPHYLL spectra, *FAVA bean, *BEANS
Abstract

Photosynthesis drives plant physiology, biomass accumulation, and yield. Photosynthetic efficiency, specifically the operating efficiency of PSII (F q'/ F m'), is highly responsive to actual growth conditions, especially to fluctuating photosynthetic photon fluence rate (PPFR). Under field conditions, plants constantly balance energy uptake to optimize growth. The dynamic regulation complicates the quantification of cumulative photochemical energy uptake based on the intercepted solar energy, its transduction into biomass, and the identification of efficient breeding lines. Here, we show significant effects on biomass related to genetic variation in photosynthetic efficiency of 178 climbing bean (Phaseolus vulgaris L.) lines. Under fluctuating conditions, the F q'/ F m' was monitored throughout the growing period using hand-held and automated chlorophyll fluorescence phenotyping. The seasonal response of F q'/ F m' to PPFR (ResponseG:PPFR) achieved significant correlations with biomass and yield, ranging from 0.33 to 0.35 and from 0.22 to 0.31 in two glasshouse and three field trials, respectively. Phenomic yield prediction outperformed genomic predictions for new environments in four trials under different growing conditions. Investigating genetic control over photosynthesis, one single nucleotide polymorphism (Chr09_37766289_13052) on chromosome 9 was significantly associated with ResponseG:PPFR in proximity to a candidate gene controlling chloroplast thylakoid formation. In conclusion, photosynthetic screening facilitates and accelerates selection for high yield potential. [ABSTRACT FROM AUTHOR]

Published
2024
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43. The wheat powdery mildew resistance gene Pm4 also confers resistance to wheat blast

Author

O'Hara, Tom, primary, Steed, Andrew, additional, Goddard, Rachel, additional, Gaurav, Kumar, additional, Arora, Sanu, additional, Quiroz-Chavez, Jesus, additional, Ramirez-Gonzalez, Ricardo, additional, Badgami, Roshani, additional, Gilbert, David, additional, Sanchez-Martin, Javier, additional, Wingen, Luzie, additional, Feng, Cong, additional, Jiang, Mei, additional, Cheng, Shifeng, additional, Dreisigacker, Susanne, additional, Keller, Beat, additional, Wulff, Brande, additional, Uauy, Cristobal, additional, and Nicholson, Paul, additional

Published
2023
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44. Septoria tritici blotch resistance geneStb15encodes a lectin receptor-like kinase

Author

Hafeez, Amber N., primary, Chartrain, Laetitia, additional, Feng, Cong, additional, Cambon, Florence, additional, Clarke, Martha, additional, Griffiths, Simon, additional, Hayta, Sadiye, additional, Jiang, Mei, additional, Keller, Beat, additional, Kirby, Rachel, additional, Kolodziej, Markus C., additional, Powell, Oliver R., additional, Smedley, Mark, additional, Steuernagel, Burkhard, additional, Xian, Wenfei, additional, Wingen, Luzie U., additional, Cheng, Shifeng, additional, Saintenac, Cyrille, additional, Wulff, Brande B. H., additional, and Brown, James K. M., additional

Published
2023
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46. Structural polymorphisms within a common powdery mildew effector scaffold as a driver of coevolution with cereal immune receptors

Author

Cao, Yu, primary, Kümmel, Florian, additional, Logemann, Elke, additional, Gebauer, Jan M., additional, Lawson, Aaron W., additional, Yu, Dongli, additional, Uthoff, Matthias, additional, Keller, Beat, additional, Jirschitzka, Jan, additional, Baumann, Ulrich, additional, Tsuda, Kenichi, additional, Chai, Jijie, additional, and Schulze-Lefert, Paul, additional

Published
2023
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50. Genebank genomics highlights the diversity of a global barley collection

Author

Milner, Sara G., Jost, Matthias, Taketa, Shin, Mazón, Elena Rey, Himmelbach, Axel, Oppermann, Markus, Weise, Stephan, Knüpffer, Helmut, Basterrechea, Martín, König, Patrick, Schüler, Danuta, Sharma, Rajiv, Pasam, Raj K., Rutten, Twan, Guo, Ganggang, Xu, Dongdong, Zhang, Jing, Herren, Gerhard, Müller, Thomas, Krattinger, Simon G., Keller, Beat, Jiang, Yong, González, Maria Y., Zhao, Yusheng, Habekuß, Antje, Färber, Sandra, Ordon, Frank, Lange, Matthias, Börner, Andreas, Graner, Andreas, Reif, Jochen C., Scholz, Uwe, Mascher, Martin, and Stein, Nils

Published
2019
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