Journal
NATURE GENETICS
Volume 46, Issue 10, Pages 1089-1096Publisher
NATURE PORTFOLIO
DOI: 10.1038/ng.3075
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Funding
- BioEnergy Science Center
- Office of Biological and Environmental Research in the DOE Office of Science
- Virginia Agricultural Experiment Station
- McIntire Stennis Program of the National Institute of Food and Agriculture, US Department of Agriculture
- Biotechnology and Biological Sciences Research Council [BB/K01711X/1] Funding Source: researchfish
- BBSRC [BB/K01711X/1] Funding Source: UKRI
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Forest trees are dominant components of terrestrial ecosystems that have global ecological and economic importance. Despite distributions that span wide environmental gradients, many tree populations are locally adapted, and mechanisms underlying this adaptation are poorly understood. Here we use a combination of whole-genome selection scans and association analyses of 544 Populus trichocarpa trees to reveal genomic bases of adaptive variation across a wide latitudinal range. Three hundred ninety-seven genomic regions showed evidence of recent positive and/or divergent selection and enrichment for associations with adaptive traits that also displayed patterns consistent with natural selection. These regions also provide unexpected insights into the evolutionary dynamics of duplicated genes and their roles in adaptive trait variation.
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