Dynamics of Gene Loss following Ancient Whole-Genome Duplication in the Cryptic Paramecium Complex.

ABSTRACT: Whole-genome duplications (WGDs) have shaped the gene repertoire of many eukaryotic lineages. The redundancy created by WGDs typically results in a phase of massive gene loss. However, some WGD-derived paralogs are maintained over long evolutionary periods, and the relative contributions of different selective pressures to their maintenance are still debated. Previous studies have revealed a history of three successive WGDs in the lineage of the ciliate Paramecium tetraurelia and two of its sister species from the Paramecium aurelia complex. Here, we report the genome sequence and analysis of 10 additional P. aurelia species and 1 additional out group, revealing aspects of post-WGD evolution in 13 species sharing a common ancestral WGD. Contrary to the morphological radiation of vertebrate

SUBMITTER: Gout JF 

PROVIDER: S-EPMC10195154 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature