Horizontal transfer of a novel Helentron in insects

Helentrons represent a novel subtype of Helitrons . However, the evolutionary history of Helentrons in organisms is not clearly understood. In this study, we performed structure and autonomous partner analyses, which revealed that bm_455 , a TE obtained from the Bombyx mori TE database, BmTEdb, was...

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Bibliographic Details
Published in:Molecular genetics and genomics : MGG 2017-02, Vol.292 (1), p.243-250
Main Authors: Zhang, Hua-Hao, Li, Guo-Yin, Xiong, Xiao-Min, Han, Min-Jin, Dai, Fang-Yin
Format: Article
Language:English
Subjects:
Animal Genetics and Genomics
Animals
Biochemistry
Biomedical and Life Sciences
Bombyx - genetics
Bombyx mori
DNA Transposable Elements
Gene Transfer, Horizontal
Genome
Genomes
Genomics
Human Genetics
Insecta - genetics
Insects
Lepidoptera
Life Sciences
Microbial Genetics and Genomics
Original Article
Phylogeny
Plant Genetics and Genomics
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Summary:Helentrons represent a novel subtype of Helitrons . However, the evolutionary history of Helentrons in organisms is not clearly understood. In this study, we performed structure and autonomous partner analyses, which revealed that bm_455 , a TE obtained from the Bombyx mori TE database, BmTEdb, was a member of Helentrons but not a long-terminal repeat (LTR) retrotransposon. Further analyses showed that bm_455 was also present in a wide range of insects including lepidopterans, coleopterans and hymenopterans using a homology-based search strategy. Several lines of evidence (high sequence identity, discontinuous distribution and lack of intense purifying selection) suggested that these elements could have been transferred into these species in part by horizontal transfers (HTs). Because Helentrons can capture host gene fragments, HTs of Helentrons might have a huge impact on their host genome evolution.
ISSN:1617-4615
1617-4623
DOI:10.1007/s00438-016-1270-4