Zhang H-H, Shen Y-H, Xiong X-M, Han M-J, Qi D-W, Zhang X-G
College of Pharmacy and Life Science, Jiujiang University, Jiujiang, China.
State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China.
Insect Mol Biol. 2016 Jun;25(3):338-46. doi: 10.1111/imb.12225. Epub 2016 Mar 9.
Horizontal transfer (HT), the exchange of genetic material between species, plays important roles in transposon biology and genome evolution. In this study, we provide the first documented example of a new Academ transposon involved in recent and distant HTs into the genomes of species belonging to seven different orders of insects: Lepidoptera, Hymenoptera, Neuroptera, Embioptera, Dermaptera, Trichoptera and Zoraptera. These results suggest that HT of DNA transposons amongst insects has occurred on a broader scale than previously appreciated. The Academ transposon discovered in the Lepidoptera and parasitic wasps is of particular interest because the intimate association between wasps and their lepidopteran hosts might provide an opportunity for HT of transposons.
水平转移（HT），即物种间遗传物质的交换，在转座子生物学和基因组进化中起着重要作用。在本研究中，我们首次记录了一个新的Academ转座子的实例，该转座子参与了近期和远距离的水平转移，进入了属于七个不同昆虫目的物种基因组：鳞翅目、膜翅目、脉翅目、纺足目、革翅目、毛翅目和缺翅目。这些结果表明，昆虫中DNA转座子的水平转移发生的规模比之前认为的更为广泛。在鳞翅目和寄生蜂中发现的Academ转座子尤其令人感兴趣，因为黄蜂与其鳞翅目宿主之间的密切关联可能为转座子的水平转移提供了机会。
