Origin and evolution of the bread wheat D genome

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

Research output: Contribution to journalArticlepeer-review

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 bottlenecks1,2. 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.

Original languageEnglish
Pages (from-to)848-855
Number of pages8
JournalNature
Volume633
Issue number8031
DOIs
StatePublished - 26 Sep 2024

All Science Journal Classification (ASJC) codes

  • General

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