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GrainGenes Reference Report: NGN-51-896

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Reference
NGN-51-896
Title
Exome sequencing highlights the role of wild-relative introgression in shaping the adaptive landscape of the wheat genome
Journal
Nature Genetics
Volume
51
Pages
896-904
Author
[ Hide all but 1 of 23 ]
He F
Pasam R
Shi F
Kant S
Keeble-Gagnere G
Kay P
Forrest K
Fritz A
Hucl P
Wiebe K
Knox R
Cuthbert R
Pozniak C
Akhunova A
Morrell PL
Davies JP
Webb SR
Spangenberg G
Hayes B
Daetwyler H
Tibbits J
Hayden M
Akhunov E
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.
External Databases
https://doi.org/10.1038/s41588-019-0382-2

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