Distribution and polymorphism of Mariner-like elements in the Bambusoideae subfamily
Distribution and polymorphism of Mariner-like elements in the Bambusoideae subfamily
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DOI：
10.1007/s00606-010-0323-0
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发表时间：
2010-08
影响因子：
1.9
通讯作者：
Mingbing Zhou;Jiang-Jie Lu;Hao Zhong;K. Tang;D. Tang
中科院分区：
文献类型：
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作者：
Mingbing Zhou;Jiang-Jie Lu;Hao Zhong;K. Tang;D. Tang
水手样因子（Mariner-like elements，MLEs）是一类存在于包括植物在内的所有真核生物基因组中的II类转座因子，目前已获得数百个完整或部分序列。我们已经表征了82个扩增片段，其代表来自竹亚科不同成员的MLE。MLE转座酶序列的系统发育分析表明，MLE在竹亚科中广泛存在，具有多样性和丰富性。此外，利用核核糖体DNA（ITS）内转录间隔区序列建立了竹亚科的分子系统学。利用MLE片段序列构建的系统发育树与基于ITS信息构建的系统发育树不一致。这些结果表明，水平之间的转移远亲物种或祖先MLE多态性的存在，然后由不同的进化和随机损失。
Mariner-like elements (MLEs) are class II transposable elements found in almost all eukaryotic genomes including those of plants, from which hundreds of complete and partial sequences have been elucidated. We have characterized 82 amplification fragments representing MLEs derived from diverse members of the Bambusoideae subfamily. Phylogenetic analysis of MLE transposase sequences shows that MLEs are widespread, diverse and abundant in the Bambusoideae. In addition, a molecular phylogeny of the Bambusoideae subfamily was established by using the internal transcribed spacer sequences of nuclear ribosomal DNA (ITS) information. The phylogenetic tree constructed using MLE fragment sequences was incongruent with a second tree based on ITS information. These results suggest horizontal transfer between distantly related species or the existence of an ancestral MLE polymorphism followed by divergent evolution and stochastic loss.