Contemporary hybridization among Arabis floodplain species creates opportunities for adaptation.

ABSTRACT: Hybridization between closely related species is increasingly recognized as a major source of biodiversity. Yet, whether it can create advantageous trait combinations while purging harmful alleles remains unknown. To address this question, we studied Arabis nemorensis and Arabis sagittata, two endangered species that currently hybridize in a single hotspot. We chose two representative individuals originating from the hotspot, generated high-quality annotated genome sequences, crossed them to form an F2 population, quantified segregation distortion along the genome, measured 22 phenotypic traits and mapped their genetic basis. Two genomic regions showed strong segregation distortion favoring A. sagittata alleles in the F2 and potentially accelerating their introgression. Fifty-eight quantit

SUBMITTER: Rahnamae N 

PROVIDER: S-EPMC12780310 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature