期刊论文

Li, J.-D.

中文

中国中药杂志

1001-5302

2013

38

7

943-946

10.4268/cjcmm20130702

国家“重大新药创制”科技重大专项（2009ZX09301005-03）； 国家自然科学基金项目（81073000）；

本校为第一且通讯机构

目的:采用线粒体COI基因序列研究我国长江流域不同地区鲤科鲌属药用鱼类的遗传特征,探讨利用该基因片段作为鲌属药用鱼类鉴定条形码的适用性。方法:扩增鲌属药用鱼类的线粒体COI基因序列5’端并进行测序,分析不同药用鱼类种内和种间的遗传变异,构建聚类树,探讨该序列片段在鲌属药用鱼类中进行鉴定的可行性。结果:鲌属药用鱼类COI基因片段的碱基组成中A+T碱基量明显高于G+C量,96%的遗传变异均发生在编码区密码子第3位点,但所有翻译后氨基酸组成均相同,表明COI基因编码在鲌属鱼类中的保守性;鲌属药用鱼类的种内遗传距离均小于1%,种间遗传距离大于10倍的种内距离;NJ聚类树显示所有鲌属鱼类聚成独立...

The sequence variation of medicinal fish of Culter (Pisces: Cyprinidae) was analyzed by using cytochrome c oxidase subunit I (COI) sequencing collected from different regions of the Yangtze River basin, and we examine whether barcoding of COI can be used to discriminate medicinal fish of Culter. The AT content in the COI region of medicinal fish of Culter was higher than that of GC, which was similar with other species of Cypriniformes. Ninty-six percent of nucleotide changes were observed at the 3rd codon position of COI sequence, but the amino acid compositions translated by COI sequences of...