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

Content Provider	PubMed Central
Author	Qiang, He Ma, Zhenggang Dang, Xiaoqun Xu, Jinshan Zhou, Zeyang
Editor	Corradi, Nicolas
Copyright Year	2015
Abstract	Miniature inverted-repeat transposable elements (MITEs) are short, non-autonomous DNA transposons, which are widespread in most eukaryotic genomes. However, genome-wide identification, origin and evolution of MITEs remain largely obscure in microsporidia. In this study, we investigated structural features for de novo identification of MITEs in genomes of silkworm microsporidia Nosema bombycis and Nosema antheraeae, as well as a honeybee microsporidia Nosema ceranae. A total of 1490, 149 and 83 MITE-related sequences from 89, 17 and five families, respectively, were found in the genomes of the above-mentioned species. Species-specific MITEs are predominant in each genome of microsporidian Nosema, with the exception of three MITE families that were shared by N. bombycis and N. antheraeae. One or multiple rounds of amplification occurred for MITEs in N. bombycis after divergence between N. bombycis and the other two species, suggesting that the more abundant families in N. bombycis could be attributed to the recent amplification of new MITEs. Significantly, some MITEs that inserted into the homologous protein-coding region of N. bombycis were recruited as introns, indicating that gene expansion occurred during the evolution of microsporidia. NbS31 and NbS24 had polymorphisms in different geographical strains of N. bombycis, indicating that they could still be active. In addition, several small RNAs in the MITEs in N. bombycis are mainly produced from both ends of the MITEs sequence.
Related Links	http://dx.doi.org/10.1371/journal.pone.0123170
Starting Page	123170
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	4
Volume Number	10
Language	English
Publisher	Public Library of Science
Publisher Date	2015-04-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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