果蝇（双翅目：果蝇科）卡迪尼组中的LTR反转录转座子微小病毒：水平转移的一个可能案例。

The LTR retrotransposon micropia in the cardini group of Drosophila (Diptera: Drosophilidae): a possible case of horizontal transfer.

作者信息

Cordeiro Juliana, Robe Lizandra J, Loreto Elgion L S, Valente Vera L S

机构信息

Programa de Pós Graduação em Biodiversidade Animal, Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.

出版信息

Genetica. 2008 Nov;134(3):335-44. doi: 10.1007/s10709-008-9241-2. Epub 2008 Feb 8.

DOI:10.1007/s10709-008-9241-2

PMID:18259879

Abstract

The presence of the micropia retroelement from the Ty1-copia family of LTR retroelements was investigated in three species of the Drosophila cardini group. Southern blot analysis suggested the existence of at least four micropia copies in the genomes of D. cardinoides, D. neocardini and D. polymorpha populations. The high sequence similarity between dhMiF2 and Dm11 clones (micropia retroelements isolated from D. hydei and D. melanogaster, respectively) with micropia sequences amplified from D. cardini group genome supports the hypothesis that this retroelement plays an active role in horizontal transfer events between D. hydei and the D. cardini group.

摘要

在果蝇卡迪尼组的三个物种中研究了来自LTR反转录元件的Ty1-copia家族的微小病毒反转录元件的存在情况。Southern印迹分析表明，在卡迪尼果蝇、新卡迪尼果蝇和多形果蝇种群的基因组中至少存在四个微小病毒拷贝。从海德果蝇和黑腹果蝇中分离出的dhMiF2和Dm11克隆（微小病毒反转录元件）与从卡迪尼组基因组中扩增出的微小病毒序列之间的高度序列相似性支持了这样一种假设，即这种反转录元件在海德果蝇和卡迪尼组之间的水平转移事件中发挥着积极作用。