Phenotypic and Genomic Local Adaptation across Latitude and Altitude in Populus trichocarpa.

ABSTRACT: Local adaptation to climate allows plants to cope with temporally and spatially heterogeneous environments, and parallel phenotypic clines provide a natural experiment to uncover the genomic architecture of adaptation. Though extensive effort has been made to investigate the genomic basis of local adaptation to climate across the latitudinal range of tree species, less is known for altitudinal clines. We used exome capture to genotype 451 Populus trichocarpa genotypes across altitudinal and latitudinal gradients spanning the natural species range, and phenotyped these trees for a variety of adaptive traits in two common gardens. We observed clinal variation in phenotypic traits across the two transects, which indicates climate-driven selection, and coupled gene-based genotype-phenotype and

SUBMITTER: Zhang M 

PROVIDER: S-EPMC6735766 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature