Origin and evolution of the bread wheat D genome
Author:
Cavalet-Giorsa EmileORCID, González-Muñoz AndreaORCID, Athiyannan NaveenkumarORCID, Holden SamuelORCID, Salhi Adil, Gardener Catherine, Quiroz-Chávez JesúsORCID, Rustamova Samira M.ORCID, Elkot Ahmed F.ORCID, Patpour Mehran, Rasheed AwaisORCID, Mao LongORCID, Lagudah Evans S., Periyannan Sambasivam K.ORCID, Sharon Amir, Himmelbach AxelORCID, Reif Jochen C.ORCID, Knauft Manuela, Mascher MartinORCID, Stein NilsORCID, Chayut NoamORCID, Ghosh SreyaORCID, Perovic DraganORCID, Putra AlexanderORCID, Perera Ana B., Hu Chia-Yi, Yu GuotaiORCID, Ahmed Hanin IbrahimORCID, Laquai Konstanze D., Rivera Luis F., Chen Renjie, Wang YajunORCID, Gao XinORCID, Liu Sanzhen, Raupp W. JohnORCID, Olson Eric L., Lee Jong-Yeol, Chhuneja ParveenORCID, Kaur SatinderORCID, Zhang Peng, Park Robert F., Ding Yi, Liu Deng-Cai, Li WanlongORCID, Nasyrova Firuza Y.ORCID, Dvorak Jan, Abbasi MehrdadORCID, Li Meng, Kumar Naveen, Meyer Wilku B.ORCID, Boshoff Willem H. P.ORCID, Steffenson Brian J.ORCID, Matny Oadi, Sharma Parva K., Tiwari Vijay K.ORCID, Grewal Surbhi, Pozniak CurtisORCID, Chawla Harmeet SinghORCID, Ens Jennifer, Dunning Luke T.ORCID, Kolmer James A., Lazo Gerard R.ORCID, Xu Steven, Gu Yongqiang, Xu Xianyang, Uauy CristobalORCID, Abrouk MichaelORCID, Bougouffa SalimORCID, Brar Gurcharn S.ORCID, Wulff Brande B. H.ORCID, Krattinger Simon G.ORCID
Abstract
AbstractBread wheat (Triticum aestivum) is a globally dominant crop and major source of calories and proteins for the human diet. Compared to its wild ancestors, modern bread wheat shows lower genetic diversity caused by polyploidisation, domestication, and breeding bottlenecks1,2. Wild wheat relatives represent genetic reservoirs, harbouring diversity and beneficial alleles that have not been incorporated into bread wheat. Here, we establish and analyse pangenome resources for Tausch’s goatgrass,Aegilops tauschii, the donor of the bread wheat D genome. This new pangenome facilitated the cloning of a disease resistance gene and 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, involving previously unreported contributions from genetically and geographically discreteAe. tauschiisubpopulations. Together, our results reveal the complex history of the bread wheat D genome and demonstrate the potential of wild relatives in crop improvement.
Publisher
Cold Spring Harbor Laboratory
Reference95 articles.
1. Triticum population sequencing provides insights into wheat adaptation;Nat Genet,2020 2. Genetic gains in wheat breeding and its role in feeding the world. Crop Breeding;Genetics and Genomics,2019 3. Marcussen, T . et al. Ancient hybridizations among the ancestral genomes of bread wheat. Science 345, 1250092 (2014). 4. Aegilops tauschiisingle nucleotide polymorphisms shed light on the origins of wheat D‐genome genetic diversity and pinpoint the geographic origin of hexaploid wheat
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