Identification, Diversity and Evolution of MITEs in the Genomes of Microsporidian Nosema Parasites

• DOI: 10.1371/journal.pone.0123170
• Publication Date: 2015-04-21T17:55:27Z
• Authors: Qiang He; Zhenggang Ma; Xiaoqun Dang; Jinshan Xu; Zeyang Zhou
• Keywords: Nosema ceranae

Miniature inverted-repeat transposable elements (MITEs) are short, non-autonomous DNA transposons, which widespread in most eukaryotic genomes. However, genome-wide identification, origin and evolution of MITEs remain largely obscure microsporidia. In this study, we investigated structural features for de novo identification genomes silkworm microsporidia Nosema bombycis antheraeae, as well a honeybee ceranae. A total 1490, 149 83 MITE-related sequences from 89, 17 five families, respectively, were found the above-mentioned species. Species-specific predominant each genome microsporidian Nosema, with exception three MITE families that shared by N. antheraeae. One or multiple rounds amplification occurred after divergence between other two species, suggesting more abundant could be attributed to recent new MITEs. Significantly, some inserted into homologous protein-coding region recruited introns, indicating gene expansion during NbS31 NbS24 had polymorphisms different geographical strains bombycis, they still active. addition, several small RNAs mainly produced both ends sequence.