Interspecific introgression mediates adaptation to whole genome duplication

• DOI: 10.1038/s41467-019-13159-5
• Publication Date: 2019-11-18T11:02:12Z
• Authors: Sarah Marburger; Patrick Monnahan; Paul J. Seear; Simon H. Martin; Jordan Koch; Pirita Paajanen; Magdalena Bohutínská; James D. Higgins; Roswitha Schmickl; Levi Yant
• Keywords: Introgression; Negative selection; Local adaptation

Abstract Adaptive gene flow is a consequential phenomenon across all kingdoms. Although recognition increasing, there no study showing that bidirectional mediates adaptation at loci manage core processes. We previously discovered concerted molecular changes among interacting members of the meiotic machinery controlling crossover number upon to whole-genome duplication (WGD) in Arabidopsis arenosa . Here we conduct population genomic test hypothesis WGD has been mediated by adaptive between A. and lyrata find underwent more recently than , suggesting pre-adapted alleles have rescued nascent but also detect opposite direction functionally under most extreme levels selection. These data indicate allowed for survival after WGD, merger these species greater sum their parts.