| 线粒体ND4-ND4L基因在黑腹果蝇种组中的进化特征 |
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| 引用本文： | 牟少亮 曾庆韬 钱远槐. 线粒体ND4-ND4L基因在黑腹果蝇种组中的进化特征[J]. 实验生物学报, 2004, 37(6): 456-460 |
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| 作者姓名： | 牟少亮 曾庆韬 钱远槐 |
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| 摘 要： | 本实验对黑腹果蝇种组(melanogaster species group)中8个种亚组33个样品两个线粒体基因ND4和ND4L进行了测序，并分析了ND4基因的序列差异和碱基替换特点，发现近缘物种中存在很明显的转换倾向，而在远缘物种中由于重复替换导致转换数处于饱和状态，我们的实验数据证实了线粒体基因较核基因有较快的进化速度。最后根据D．melanogaster与D．yakuba的遗传距离推算了8个种亚组的分化时间，ananassae种亚组最先分化，然后依次是montium，melanogaster，ficsphila,eugracilis，elegans，suzukii和takahashii最后分化。
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| 关 键 词： | 线粒体遗传 ND4基因 ND4L基因 黑腹果蝇种组 进化特征 碱基转换倾向 |
The evolutionary traits of mitocondrial ND4-ND4L in Drosophila melanogaster species group] |
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| Shao Liang Mou,Qing Tao Zeng,Yuan Huai Qian. The evolutionary traits of mitocondrial ND4-ND4L in Drosophila melanogaster species group][J]. Acta Biologiae Experimentalis Sinica, 2004, 37(6): 456-460 |
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| Authors: | Shao Liang Mou Qing Tao Zeng Yuan Huai Qian |
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| Affiliation: | College of Life Science, Hubei University, Wuhan, 430062, China. |
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| Abstract: | The sequences of the mitochondrial ND4-ND4L were determined for all the 33 extant taxaes of the Drosophila melanogaster species group, so evolutionary traits of ND4 gene sequences were analyzed. We found a strong transition bias in closed related species and saturation of transitional substitutions in distant related species. Moreover, we calculated the diverge time of eight subgroup according to the Tamura-Nei distance between D. melanogaster and D. yakuba. Our result suggested that ananassae subgroup branched off firstly, and montium, melanogaster, ficsphila, eugracilis, elegans, suzukii-takahashii branched off sequentially. |
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