Independent rediploidization masks shared whole genome duplication in the sturgeon-paddlefish ancestor.

ABSTRACT: Whole genome duplication (WGD) is a dramatic evolutionary event generating many new genes and which may play a role in survival through mass extinctions. Paddlefish and sturgeon are sister lineages that both show genomic evidence for ancient WGD. Until now this has been interpreted as two independent WGD events due to a preponderance of duplicate genes with independent histories. Here we show that although there is indeed a plurality of apparently independent gene duplications, these derive from a shared genome duplication event occurring well over 200 million years ago, likely close to the Permian-Triassic mass extinction period. This was followed by a prolonged process of reversion to stable diploid inheritance (rediploidization), that may have promoted survival during the Triassic-Juras

SUBMITTER: Redmond AK 

PROVIDER: S-EPMC10199039 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature