| Literature DB >> 31043759 |
Fei He1, Raj Pasam2, Fan Shi2, Surya Kant2, Gabriel Keeble-Gagnere2, Pippa Kay2, Kerrie Forrest2, Allan Fritz3, Pierre Hucl4, Krystalee Wiebe4, Ron Knox5, Richard Cuthbert5, Curtis Pozniak4, Alina Akhunova1,6, Peter L Morrell7, John P Davies8, Steve R Webb8, German Spangenberg2,9, Ben Hayes2,10, Hans Daetwyler2,9, Josquin Tibbits2,9, Matthew Hayden11,12, Eduard Akhunov13.
Abstract
Introgression is a potential source of beneficial genetic diversity. The contribution of introgression to adaptive evolution and improvement of wheat as it was disseminated worldwide remains unknown. We used targeted re-sequencing of 890 diverse accessions of hexaploid and tetraploid wheat to identify wild-relative introgression. Introgression, and selection for improvement and environmental adaptation, each reduced deleterious allele burden. Introgression increased diversity genome wide and in regions harboring major agronomic genes, and contributed alleles explaining a substantial proportion of phenotypic variation. These results suggest that historic gene flow from wild relatives made a substantial contribution to the adaptive diversity of modern bread wheat.Entities:
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Year: 2019 PMID： 31043759 DOI： 10.1038/s41588-019-0382-2
Source DB: PubMed Journal: Nat Genet ISSN： 1061-4036 Impact factor: 38.330