数字农科院2.0

伊氏锥虫、马媾疫锥虫、布氏锥虫、刚果锥虫的18SrDNA部分序列测定与系统发育关系

文献类型: 中文期刊

作者: 周勇志;周金林;沈杰;龚海燕;向飞宇;黄兵

作者机构:

关键词: 伊氏锥虫;马媾疫锥虫;布氏锥虫;刚果锥虫;18S;rDNA;PCR

期刊名称:中国预防兽医学报

ISSN: 1008-0589

年卷期: 2006 年 28 卷 2 期

页码: 178-180

收录情况: CSCD

摘要: 对伊氏锥虫(Trypanosoma evansi):新疆株(XJCA)、湖北株(HBM)、云南株(YNB)、广东株(GDB2);马媾疫锥虫(Trypanosoma equiperdum)、布氏锥虫(Trypanosoma brucei)、刚果锥虫(Trypanosoma congolense)提取基因组DNA,根据已报道的伊氏锥虫株18SrDNA基因序列设计合成引物,用PCR扩增了锥虫虫株基因组DNA,伊氏锥虫新疆株、湖北株、云南株、广东株、布氏锥虫、刚果锥虫均为373bp的片段;马媾疫锥虫为372bp的片段,PCR产物经电泳鉴定后用试剂盒回收纯化,纯化后PCR产物经连接、转化后测序,将测得的序列用DNAMAN软件分析并与国外已发表的相应序列进行了同源性比较,并绘制了系统发育进化树。结果与国外AJ009153、AJ223564、D89527株同源性达到99%~100%,与另外11株同源性75%。本研究为锥虫分子流行病学研究及分类研究打下基础。

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