Satellitome comparison of two oedipodine grasshoppers highlights the contingent nature of satellite DNA evolution.

ABSTRACT:

Background

The full catalog of satellite DNA (satDNA) within a same genome constitutes the satellitome. The Library Hypothesis predicts that satDNA in relative species reflects that in their common ancestor, but the evolutionary mechanisms and pathways of satDNA evolution have never been analyzed for full satellitomes. We compare here the satellitomes of two Oedipodine grasshoppers (Locusta migratoria and Oedaleus decorus) which shared their most recent common ancestor about 22.8 Ma ago.

Results

We found that about one third of their satDNA families (near 60 in every species) showed sequence homology and were grouped into 12 orthologous superfamilies. The turnover rate of consensus sequences was extremely variable among the 20 orthologous family pairs analyzed in both specie

SUBMITTER: Camacho JPM 

PROVIDER: S-EPMC8822648 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature