Diversity of Harbinger-like Transposons in Teleost Fish Genomes.

ABSTRACT: Harbinger elements are DNA transposons that are widespread from plants to vertebrates but absent from mammalian genomes. Among vertebrates, teleost fish are the clade presenting not only the largest number of species but also the highest diversity of transposable elements, both quantitatively and qualitatively, making them a very attractive group to investigate the evolution of mobile sequences. We studied Harbinger DNA transposons and the distantly related ISL2EU elements in fish, focusing on representative teleost species compared to the spotted gar, the coelacanth, the elephant shark and the amphioxus. We observed high variability in the genomic composition of Harbinger-like sequences in teleost fish, as they covered 0.002-0.14% of the genome, when present. W

SUBMITTER: Etchegaray E 

PROVIDER: S-EPMC9179366 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature