Differential retention of transposable element-derived sequences in outcrossing Arabidopsis genomes.

ABSTRACT:

Background

Transposable elements (TEs) are genomic parasites with major impacts on host genome architecture and host adaptation. A proper evaluation of their evolutionary significance has been hampered by the paucity of short scale phylogenetic comparisons between closely related species. Here, we characterized the dynamics of TE accumulation at the micro-evolutionary scale by comparing two closely related plant species, Arabidopsis lyrata and A. halleri.

Results

Joint genome annotation in these two outcrossing species confirmed that both contain two distinct populations of TEs with either 'recent' or 'old' insertion histories. Identification of rare segregating insertions suggests that diverse TE families contribute to the ongoing dynamics of TE accumulation i

SUBMITTER: Legrand S 

PROVIDER: S-EPMC6636163 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature