Exploring genomic variation associated with drought stress in Picea mariana populations.

ABSTRACT: Predicted increases in drought and heat stress will likely induce shifts in species bioclimatic envelopes. Genetic variants adapted to water limitation may prove pivotal for species response under scenarios of increasing drought. In this study, we aimed to explore this hypothesis by investigating genetic variation in 16 populations of black spruce (Picea mariana) in relation to climate variables in Alaska. A total of 520 single nucleotide polymorphisms (SNPs) were genotyped for 158 trees sampled from areas of contrasting climate regimes. We used multivariate and univariate genotype-by-environment approaches along with available gene annotations to investigate the relationship between climate and genetic variation among sampled populations. Nine SNPs were identified as having a signi

SUBMITTER: Napier JD 

PROVIDER: S-EPMC7487243 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature