Extensive exchange of transposable elements in the <i>Drosophila pseudoobscura</i> group.

ABSTRACT:

Background

As species diverge, so does their transposable element (TE) content. Within a genome, TE families may eventually become dormant due to host-silencing mechanisms, natural selection and the accumulation of inactive copies. The transmission of active copies from a TE families, both vertically and horizontally between species, can allow TEs to escape inactivation if it occurs often enough, as it may allow TEs to temporarily escape silencing in a new host. Thus, the contribution of horizontal exchange to TE persistence has been of increasing interest.

Results

Here, we annotated TEs in five species with sequenced genomes from the D. pseudoobscura species group, and curated a set of TE families found in these species. We found that, compared to host genes, many TE

SUBMITTER: Hill T 

PROVIDER: S-EPMC6006672 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature