Origin and evolution of the bread wheat D genome

Cavalet-Giorsa, Emile; González-Muñoz, Andrea; Athiyannan, Naveenkumar; Holden, Samuel; Salhi, Adil; Gardener, Catherine; Quiroz-Chávez, Jesús; Rustamova, Samira M.; Elkot, Ahmed Fawzy; Patpour, Mehran; Rasheed, Awais; Mao, Long; Lagudah, Evans S.; Periyannan, Sambasivam K.; Sharon, Amir; Himmelbach, Axel; Reif, Jochen C.; Knauft, Manuela; Mascher, Martin; Stein, Nils; Chayut, Noam; Ghosh, Sreya; Perovic, Dragan; Putra, Alexander; Perera, Ana B.; Hu, Chia-Yi; Yu, Guotai; Ahmed, Hanin Ibrahim; Laquai, Konstanze D.; Rivera, Luis F.; Chen, Renjie; Wang, Yajun; Gao, Xin; Liu, Sanzhen; Raupp, W. John; Olson, Eric L.; Lee, Jong-Yeol; Chhuneja, Parveen; Kaur, Satinder; Zhang, Peng; Park, Robert F.; Ding, Yi; Liu, Deng-Cai; Li, Wanlong; Nasyrova, Firuza Y.; Dvorak, Jan; Abbasi, Mehrdad; Li, Meng; Kumar, Naveen; Meyer, Wilku B.; Boshoff, Willem H. P.; Steffenson, Brian J.; Matny, Oadi; Sharma, Parva K.; Tiwari, Vijay K.; Grewal, Surbhi; Pozniak, Curtis J.; Chawla, Harmeet Singh; Ens, Jennifer;...

Abstract

Bread wheat (Triticum aestivum) is a globally dominant crop and major source of calories and proteins for the human diet. Compared with its wild ancestors, modern bread wheat shows lower genetic diversity, caused by polyploidisation, domestication and breeding bottlenecks. Wild wheat relatives represent genetic reservoirs, and harbour diversity and beneficial alleles that have not been incorporated into bread wheat. Here we establish and analyse extensive genome resources for Tausch’s goatgrass (Aegilops tauschii), the donor of the bread wheat D genome. Our analysis of 46 Ae. tauschii genomes enabled us to clone a disease resistance gene and perform haplotype analysis across a complex disease resistance locus, allowing us to discern alleles from paralogous gene copies. We also reveal the complex genetic composition and history of the bread wheat D genome, which involves contributions from genetically and geographically discrete Ae. tauschii subpopulations. Together, our results reveal the complex history of the bread wheat D genome and demonstrate the potential of wild relatives in crop improvement.

Citation

Cavalet-Giorsa, E., González-Muñoz, A., Athiyannan, N., Holden, S., Salhi, A., Gardener, C., Quiroz-Chávez, J., Rustamova, S. M., Elkot, A. F., Patpour, M., Rasheed, A., Mao, L., Lagudah, E. S., Periyannan, S. K., Sharon, A., Himmelbach, A., Reif, J. C., Knauft, M., Mascher, M., Stein, N., …Krattinger, S. G. (2024). Origin and evolution of the bread wheat D genome. Nature, https://doi.org/10.1038/s41586-024-07808-z

• Journal Article Type: Article
• Acceptance Date: Jul 10, 2024
• Online Publication Date: Aug 14, 2024
• Publication Date: Aug 14, 2024
• Deposit Date: Aug 16, 2024
• Publicly Available Date: Aug 19, 2024
• Journal: Nature
• Print ISSN: 0028-0836
• Electronic ISSN: 1476-4687
• Publisher: Nature Publishing Group
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1038/s41586-024-07808-z
• Public URL: https://nottingham-repository.worktribe.com/output/38383640
• Publisher URL: https://www.nature.com/articles/s41586-024-07808-z
• Additional Information: Received: 15 November 2023; Accepted: 10 July 2024; First Online: 14 August 2024; : The authors declare no competing interests.