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

文献类型： 外文期刊

第一作者： Gaurav, Kumar

作者： Gaurav, Kumar;Arora, Sanu;Chinoy, Catherine;Nicholson, Paul;Quiroz-Chavez, Jesus;Simmonds, James;Hayta, Sadiye;Smedley, Mark A.;Harwood, Wendy;Pearce, Suzannah;Gilbert, David;Kangara, Ngonidzashe;Gardener, Catherine;Forner-Martinez, Macarena;Liu, Jiaqian;Yu, Guotai;Boden, Scott A.;Pascucci, Attilio;Ghosh, Sreya;Hafeez, Amber N.;O'Hara, Tom;Waites, Joshua;Cheema, Jitender;Steuernagel, Burkhard;Uauy, Cristobal;Wulff, Brande B. H.;Silva, Paula;Gao, Liangliang;Raupp, W. John;Singh, Narinder;Wu, Shuangye;Poland, Jesse;Silva, Paula;Gao, Liangliang;Raupp, W. John;Singh, Narinder;Wu, Shuangye;Poland, Jesse;Silva, Paula;Sanchez-Martin, Javier;Widrig, Victoria;Keller, Beat;Horsnell, Richard;Bentley, Alison R.;Brar, Gurcharn S.;Kutcher, H. Randy;Hucl, Pierre;Brar, Gurcharn S.;Kale, Sandip M.;Mascher, Martin;Liu, Jiaqian;Boden, Scott A.;Pascucci, Attilio;Patpour, Mehran;Justesen, Annemarie Fejer;Liu, Shuyu;Rudd, Jackie C.;Avni, Raz;Sharon, Amir;Steiner, Barbara;Kirana, Rizky Pasthika;Buerstmayr, Hermann;Kirana, Rizky Pasthika;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.;Li, Aili;Mao, Long;Liu, Deng-Cai;Xu, Steven;Faris, Justin;Brown-Guedira, Gina;Dvorak, Jan;Luo, Ming-Cheng;Krasileva, Ksenia;Lux, Thomas;Artmeier, Susanne;Mayer, Klaus F. X.;Mayer, Klaus F. X.;Mascher, Martin;Singh, Narinder;Yu, Guotai;Poland, Jesse;Wulff, Brande B. H.;Bentley, Alison R.

作者机构：

期刊名称：NATURE BIOTECHNOLOGY （ 影响因子：54.908； 五年影响因子：50.516 ）

ISSN： 1087-0156

年卷期：

页码：

收录情况： SCI

摘要： Exploring the diversity of the wild progenitor of the wheat D subgenome allows for rapid trait discovery. 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.

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