An experimental test of temperature-dependent selection on mitochondrial haplotypes in Callosobruchus maculatus seed beetles.

ABSTRACT: Mitochondrial DNA (mtDNA) consists of few but vital maternally inherited genes that interact closely with nuclear genes to produce cellular energy. How important mtDNA polymorphism is for adaptation is still unclear. The assumption in population genetic studies is often that segregating mtDNA variation is selectively neutral. This contrasts with empirical observations of mtDNA haplotypes affecting fitness-related traits and thermal sensitivity, and latitudinal clines in mtDNA haplotype frequencies. Here, we experimentally test whether ambient temperature affects selection on mtDNA variation, and whether such thermal effects are influenced by intergenomic epistasis due to interactions between mitochondrial and nuclear genes, using replicated experimental evolution in Callosobruchus macul

SUBMITTER: Immonen E 

PROVIDER: S-EPMC7593184 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature