Mutation Load in Sunflower Inversions Is Negatively Correlated with Inversion Heterozygosity.

ABSTRACT: Recombination is critical both for accelerating adaptation and purging deleterious mutations. Chromosomal inversions can act as recombination modifiers that suppress local recombination in heterozygotes and thus, under some conditions, are predicted to accumulate such mutations. In this study, we investigated patterns of recombination, transposable element abundance, and coding sequence evolution across the genomes of 1,445 individuals from three sunflower species, as well as within nine inversions segregating within species. We also analyzed the effects of inversion genotypes on 87 phenotypic traits to test for overdominance. We found significant negative correlations of long terminal repeat retrotransposon abundance and deleterious mutations with recombination rates across the genome in

SUBMITTER: Huang K 

PROVIDER: S-EPMC9127631 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature