Horizontal Transfer and Recombination Fuel Ty4 Retrotransposon Evolution in Saccharomyces.

ABSTRACT: Horizontal transposon transfer (HTT) plays an important role in the evolution of eukaryotic genomes; however, the detailed evolutionary history and impact of most HTT events remain to be elucidated. To better understand the process of HTT in closely related microbial eukaryotes, we studied Ty4 retrotransposon subfamily content and sequence evolution across the genus Saccharomyces using short- and long-read whole genome sequence data, including new PacBio genome assemblies for two Saccharomyces mikatae strains. We find evidence for multiple independent HTT events introducing the Tsu4 subfamily into specific lineages of Saccharomyces paradoxus, Saccharomyces cerevisiae, Saccharomyces eubayanus, Saccharomyces kudriavzevii and the ancestor of the S. mikatae/Saccharomyces jurei species pair. In

SUBMITTER: Chen J 

PROVIDER: S-EPMC11739139 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature