Themariner transposable element in natural populations ofDrosophila teissieri |
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Authors: | Frédéric Brunet Fabienne Godin Claude Bazin Jean R David Pierre Capy |
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Institution: | (1) Laboratoire Populations, Génétique et Evolution, CNRS, 91198 Gif sur Yvette, Cedex, France |
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Abstract: | Themariner transposable elements of several natural populations ofDrosophila teissieri, a rainforest species endemic to tropical Africa, were studied. Natural populations trapped along a transect from Zimbabwe
to the Ivory Coast were analyzed by Southern blotting, in situ hybridization, cloning, and sequencing of PCR products. The
Brazzaville population had some full-length elements, while the remaining populations had mainly deleted elements. The main
class of deleted elements lacked a 500-bp segment. A mechanism is proposed that could generate such elements rapidly. In situ
hybridizations showed that there are nomariner elements in pericentromeric heterochromatin. Finally, the phylogeny of theMos1-likemariner full-length elements is consistent with vertical transmission from the ancestor of themelanogaster subgroup.
Correspondence to: P. Capy |
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Keywords: | Drosophila teissieri mariner Transposon Natural populations Deleted elements |
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