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

Gaurav, Kumar and Arora, Sanu and Silva, Paula and Sánchez-Martín, Javier and Horsnell, Richard and Gao, Liangliang and Brar, Gurcharn S. and Widrig, Victoria and Raupp, W. John and Singh, Narinder and Wu, Shuangye and Kale, Sandip M. and Chinoy, Catherine and Nicholson, Paul and Quiroz-Chávez, Jesús and Simmonds, James and Hayta, Sadiye and Smedley, Mark A. and Harwood, Wendy and Pearce, Suzannah and Gilbert, David and Kangara, Ngonidzashe and Gardener, Catherine and Forner-Martínez, Macarena and Liu, Jiaqian and Yu, Guotai and Boden, Scott A. and Pascucci, Attilio and Ghosh, Sreya and Amber N. Hafeez, Amber N. and O’Hara, Tom and Waites, Joshua and Cheema, Jitender and Steuernagel, Burkhard and Patpour, Mehran and Justesen, Annemarie Fejer and Liu, Shuyu and Rudd, Jackie C. and Avni, Raz and Sharon, Amir and Steiner, Barbara and Kirana, Rizky Pasthika and Buerstmayr, Hermann and Mehrabi, Ali A. and Nasyrova, Firuza Y. and Chayut, Noam and Matny, Oadi and Steffenson, Brian J. and Sandhu, Nitika and Chhuneja, Parveen and Lagudah, Evans and Elkot, Ahmed F. and Tyrrell, Simon and Bian, Xingdong and Davey, Robert P. and Simonsen, Martin and Schauser, Leif and Tiwari, Vijay K. and Kutcher, H. Randy and Hucl, Pierre and Li, Aili and Liu, Deng-Cai and Mao, Long and Xu, Steven and Brown-Guedira, Gina and Faris, Justin and Dvorak, Jan and Luo, Ming-Cheng and Krasileva, Ksenia and Lux, Thomas and Artmeier, Susanne and Mayer, Klaus F. X. and Uauy, Cristobal and Mascher, Martin and Bentley, Alison R. and Keller, Beat and Poland, Jesse and Wulff, Brande B. H. (2022) Population genomic analysis of Aegilops tauschii identifies targets for bread wheat improvement. Nature Biotechnology, 40 (3). pp. 422-431. ISSN 10870156

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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. tauschiiaccessions and compared them to the wheat D subgenome to characterize genomic diversity. We found that a rare lineage of Ae. tauschiigeographically 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. tauschiigenomes. Exploiting the genomic diversity of the Ae. tauschiiancestral diploid genome permits rapid trait discovery and functional genetic validation in a hexaploid background amenable to breeding.

Item Type: Article
Subjects: S Agriculture > SB Plant culture
Divisions: Faculty of Agriculture > Department of Agronomy
Depositing User: Erlita Cahyaningtyas Cahyaningtyas
Date Deposited: 18 Nov 2024 08:30
Last Modified: 18 Nov 2024 08:30
URI: https://ir.lib.ugm.ac.id/id/eprint/11660

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