Genetic basis and evolution of rapid cycling in railway populations of tetraploid Arabidopsis arenosa.

ABSTRACT: Spatially structured plant populations with diverse adaptations provide powerful models to investigate evolution. Human-generated ruderal habitats are abundant and low-competition, but are challenging for plants not adapted to them. Ruderal habitats also sometimes form networked corridors (e.g. roadsides and railways) that allow rapid long-distance spread of successfully adapted variants. Here we use transcriptomic and genomic analyses, coupled with genetic mapping and transgenic follow-up, to understand the evolution of rapid cycling during adaptation to railway sites in autotetraploid Arabidopsis arenosa. We focus mostly on a hybrid population that is likely a secondary colonist of a railway site. These mountain railway plants are phenotypically similar to their cosmopolitan cousins. We

SUBMITTER: Baduel P 

PROVIDER: S-EPMC6049958 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature