基于线粒体ATP6基因序列的作物系统发育研究

Phylogenetic Analysis of Crops with Mitochondrial ATP6 Gene Sequence

ATP6编码ATP合酶a亚基,对酶正常功能的实现作用重要。为探讨线粒体ATP6基因在作物系统发育分析上的应用,采用NJ法的Kimura 2-parameter模型、E距离模型,以及最大似然法对30种作物进行分子系统树构建,并结合植物形态学分类结果进行比较分析。结果表明,基于NJ法和最大似然法的ATP6系统发育树聚类结果一致,契合现有植物形态学分类,在分析作物物种分化起源上有巨大潜力。

ATP6 encodes the subunit a of ATP synthase and plays an important role in the normal function of enzyme. The neighborjoining Kimura 2-parameter method, neighbor-joining E method and maximum likelihood method were used to explore the phylogenetic relationships of 30 various crops base on mitochondrial gene ATP6 in this study. The results showed that the phylogenetic relationships base on mitochondrial ATP6 among species of the given crops were consistent with present morphological classification. The mitochondrial genes ATP6 have a great potential in speciation history of crops.