We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Population genomics of Populus trichocarpa identifies signatures of selection and adaptive trait associations.
- Authors
Evans, Luke M; Rodgers-Melnick, Eli; DiFazio, Stephen P; Slavov, Gancho T; Martin, Joel; Schackwitz, Wendy; Ranjan, Priya; Muchero, Wellington; Gunter, Lee; Chen, Jin-Gui; Brunner, Amy M; Tuskan, Gerald A
- Abstract
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.
- Subjects
BLACK cottonwood; METAGENOMICS; TREES -- Adaptation; GENE expression; EVOLUTIONARY theories; ECOSYSTEM dynamics
- Publication
Nature Genetics, 2014, Vol 46, Issue 10, p1089
- ISSN
1061-4036
- Publication type
Article
- DOI
10.1038/ng.3075