畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (6): 1293-1298.doi: 10.11843/j.issn.0366-6964.2016.06.028

• 研究简报 • 上一篇    

基于COⅠ基因序列对我国部分巴贝斯虫分类的研究

苟惠天1,薛慧文1,殷宏2,孙晓林1*,罗建勋2*   

  1. (1甘肃农业大学动物医学院,兰州 730070;2中国农业科学院兰州兽医研究所,兰州 730046)
  • 收稿日期:2015-11-16 出版日期:2016-06-23 发布日期:2016-06-23
  • 通讯作者: 罗建勋,男,研究员,E-mail:vectorparasit@126.com;孙晓林,男,教授,E-mail:sunxl@gsau.edu.cn
  • 作者简介:苟惠天(1980-),甘肃临洮人,讲师,博士,主要从事兽医公共卫生研究工作,E-mail:gouht@gsau.edu.cn
  • 基金资助:

    国家自然科学基金(31560700);甘肃省自然科学基金(145RJZA172);兰州市科技创新人才计划(2014-2-11);甘肃农业大学盛彤笙创新基金(GSAU-STS-1422)

Toxonomic Study of Some Babesia spp.Based on COⅠ Gene in China

GOU Hui-tian1,XUE Hui-wen1,YIN Hong2,SUN Xiao-lin 1* ,LUO Jian-xun 2*   

  1. (1.College of Veterinary Medicine,Gansu Agricultural University,Lanzhou 730070,China;2.Lanzhou Veterinary Research Institute of Chinese Academy of Agricultural Science,Lanzhou 730046,China)
  • Received:2015-11-16 Online:2016-06-23 Published:2016-06-23

摘要:

为了确定巴贝斯虫中国分离株的分类地位,对我国报道的7种巴贝斯虫11个地方分离株的COⅠ基因序列进行测定;并与GenBank中其他巴贝斯虫COⅠ和相应18S rRNA基因序列分别构建系统发生树,比较基于不同基因的分类结果。结果显示:11株巴贝斯虫的COⅠ基因大小在935~999 bp,与18S rRNA基因比较,COⅠ基因序列含有较多的变异位点及简约信息位点;基于两个基因的系统发育树,对于牛巴贝斯虫的分类结果基本一致。但也存在如下差异:18S rRNA无法将泰勒虫与巴贝斯虫进行区分,而COⅠ基因可明显区分;羊巴贝斯虫新疆未定种的分类地位在基于COⅠ基因的分类中更具合理性。来源于COⅠ和18S rRNA的信息都说明我国莫氏巴贝斯虫的不同地方株间可能存在亚种关系。该研究为巴贝斯虫的分子分类提供了候选基因。

 

Abstract:

In order to clarify the taxonomic status of Babesia spp,the COⅠgene were sequenced from 11 isolates of 7 species reported in China;The phylogenetic tree were constructed using COⅠand 18S rRNA sequences downloaded from GenBank and this study,and also the two phylogenetic trees were compared.As result shown,the length of COⅠgene was 935-999 bp,and the COⅠgene had more variation and informative sites than 18S rRNA.The taxonomic status of bovis Babesia spp.based on COⅠand 18S rRNA shared high similarity.However,there were also some differences from two phylogenetic trees.Such as,the COⅠgene can differentiate Babesia spp and Theileria spp clearly.To 18S rRNA,it was more difficult.The taxonomic status based on COⅠgene of Babesia sp.from Xinjiang was more reasonable.The information of two phylogenetic tree suggested that the Babesia motasi isolated from different region may represent different subspecies.This study supported the candidate gene of molecular taxonomy of Babesia spp.

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