Evolution of the bread wheat D-subgenome and enriching it with diversity from Aegilops tauschii-Reference-Cited by-同舟云学术

Evolution of the bread wheat D-subgenome and enriching it with diversity from Aegilops tauschii

Published:2021-02-01 Issue: Volume: Page:
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Gaurav Kumar^ORCID,Arora Sanu^ORCID,Silva Paula^ORCID,Sánchez-Martín Javier^ORCID,Horsnell Richard,Gao Liangliang^ORCID,Brar Gurcharn S.^ORCID,Widrig Victoria^ORCID,Raupp Jon,Singh Narinder^ORCID,Wu Shuangye,Kale Sandip M.^ORCID,Chinoy Catherine^ORCID,Nicholson Paul^ORCID,Quiroz-Chávez Jesús,Simmonds James^ORCID,Hayta Sadiye,Smedley Mark A.,Harwood Wendy^ORCID,Pearce Suzi,Gilbert David,Kangara Ngonidzashe,Gardener Catherine,Forner-Martínez Macarena,Liu Jiaqian,Yu Guotai,Boden Scott,Pascucci Attilio^ORCID,Ghosh Sreya^ORCID,Hafeez Amber N.^ORCID,O’Hara Tom^ORCID,Waites Joshua^ORCID,Cheema Jitender,Steuernagel Burkhard^ORCID,Patpour Mehran^ORCID,Justesen Annemarie Fejer^ORCID,Liu Shuyu^ORCID,Rudd Jackie C.,Avni Raz^ORCID,Sharon Amir^ORCID,Steiner Barbara^ORCID,Kirana Rizky Pasthika^ORCID,Buerstmayr Hermann^ORCID,Mehrabi Ali A.,Nasyrova Firuza Y.,Chayut Noam^ORCID,Matny Oadi^ORCID,Steffenson Brian J.,Sandhu Nitika^ORCID,Chhuneja Parveen^ORCID,Lagudah Evans^ORCID,Elkot Ahmed F.^ORCID,Tyrrell Simon^ORCID,Bian Xingdong^ORCID,Davey Robert P.^ORCID,Simonsen Martin,Schauser Leif^ORCID,Tiwari Vijay K.^ORCID,Kutcher H. Randy^ORCID,Hucl Pierre,Li Aili^ORCID,Liu Deng-Cai^ORCID,Mao Long^ORCID,Xu Steven^ORCID,Brown-Guedira Gina^ORCID,Faris Justin^ORCID,Dvorak Jan,Luo Ming-Cheng^ORCID,Krasileva Ksenia^ORCID,Lux Thomas^ORCID,Artmeier Susanne^ORCID,Mayer Klaus F. X.^ORCID,Uauy Cristobal^ORCID,Mascher Martin^ORCID,Bentley Alison R.^ORCID,Keller Beat^ORCID,Poland Jesse^ORCID,Wulff Brande B. H.^ORCID

Abstract

AbstractAegilops tauschii, the diploid wild progenitor of the D-subgenome of bread wheat, constitutes a reservoir of genetic diversity for improving bread wheat performance and environmental resilience. To better define and understand this diversity, we sequenced 242 Ae. tauschii accessions and compared them to the wheat D-subgenome. We characterized a rare, geographically-restricted lineage of Ae. tauschii and discovered that it contributed to the wheat D-subgenome, thereby elucidating the origin of bread wheat from at least two independent hybridizations. We then used k-mer-based association mapping to identify 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 ‘synthetic’ hexaploids incorporating diverse Ae. tauschii genomes. This pipeline permits rapid trait discovery in the diploid ancestor through to functional genetic validation in a hexaploid background amenable to breeding.

Publisher

Cold Spring Harbor Laboratory

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