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作 者 ：高政权,孟春晓,孔德信

期 刊 ：热带亚热带植物学报 2008年 16卷 3期 页码：195~198

关键词：雨生红球藻；IPP异构酶基因；系统进化树；似然比分析；

Keywords:Haematococcus pluvialis, IPP isomerase gene, Phylogenetic tree, Likelihood ratio test (LRT),

摘 要 ：通过系统进化树的构建对IPP异构酶的系统发育进行分析研究。结果表明，不同来源的IPP异构酶基因均是单系分支，并且各个分支有着不同进化模式；似然比分析结果发现，绿藻来源的IPP异构酶有9.8%的氨基酸位点经受了正选择的压力，其基因的进化模式不同于高等植物和细菌中的IPP异构酶基因。

Abstract:By reconstruction of a phylogenetic tree, the phylogeny of IPP isomerase was studied. The results showed that different source IPP isomerase genes form monophyletic clade with 100% bootstrap support, and each clade had different evolution model. 9.8% amino acid sites of IPP isomerase derived from green algal endured positive selection by method of maximum likelihood rate, and the evolutionary pattern of IPP isomerase gene derived from green algal was different from those in higher plants and bacterium.

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