Selective Sweeps Lead to Evolutionary Success in an Amazonian Hyperdominant Palm.

ABSTRACT: Despite the global importance of tropical ecosystems, few studies have identified how natural selection has shaped their megadiversity. Here, we test for the role of adaptation in the evolutionary success of the widespread, highly abundant Neotropical palm Mauritia flexuosa. We used a genome scan framework, sampling 16,262 single-nucleotide polymorphisms (SNPs) with target sequence capture in 264 individuals from 22 populations in rainforest and savanna ecosystems. We identified outlier loci as well as signal of adaptation using Bayesian correlations of allele frequency with environmental variables and detected both selective sweeps and genetic hitchhiking events. Functional annotation of SNPs with selection footprints identified loci affecting genes related to adaptation to environ

SUBMITTER: Melo WA 

PROVIDER: S-EPMC7786001 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature