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Hidden variation in polyploid wheat drives local adaptation.

Genome Res. 28, 1319-1332 (2018)
Publishers Version Research data DOI PMC
Open Access Gold (Paid Option)
Creative Commons Lizenzvertrag
as soon as is submitted to ZB.
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
Reviewing status