The ecology of palm genomes: repeat-associated genome size expansion is constrained by aridity.

ABSTRACT: Genome size varies 2400-fold across plants, influencing their evolution through changes in cell size and cell division rates which impact plants' environmental stress tolerance. Repetitive element expansion explains much genome size diversity, and the processes structuring repeat 'communities' are analogous to those structuring ecological communities. However, which environmental stressors influence repeat community dynamics has not yet been examined from an ecological perspective. We measured genome size and leveraged climatic data for 91% of genera within the ecologically diverse palm family (Arecaceae). We then generated genomic repeat profiles for 141 palm species, and analysed repeats using phylogenetically informed linear models to explore relationships between repeat dynamics and en

SUBMITTER: Schley RJ 

PROVIDER: S-EPMC9796251 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature