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Hidden variation in polyploid wheat drives local adaptation.
Genome Res. 28, 1319-1332 (2018)
Publ. Version/Full Text
Research data
DOI
PMC
Wheat has been domesticated into a large number of agricultural environments and has the ability to adapt to diverse environments. To understand this process, we survey genotype, repeat content, and DNA methylation across a bread wheat landrace collection representing global genetic diversity. We identify independent variation in methylation, genotype, and transposon copy number. We show that these, so far unexploited, sources of variation have had a significant impact on the wheat genome and that ancestral methylation states become preferentially "hard coded" as single nucleotide polymorphisms (SNPs) via 5-methylcytosine deamination. These mechanisms also drive local adaption, impacting important traits such as heading date and salt tolerance. Methylation and transposon diversity could therefore be used alongside SNP-based markers for breeding.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Dna Methylation; Arabidopsis-thaliana; Sequence Capture; Gene-expression; Bread Wheat; Genome; Collection; Resistance; Diversity; Underlies
ISSN (print) / ISBN
1088-9051
e-ISSN
1549-5469
Journal
Genome Research
Quellenangaben
Volume: 28,
Issue: 9,
Pages: 1319-1332
Publisher
Cold Spring Harbor Laboratory Press
Publishing Place
1 Bungtown Rd, Cold Spring Harbor, Ny 11724 Usa
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Reviewing status
Peer reviewed