畜牧与饲料科学 ›› 2020, Vol. 41 ›› Issue (1): 116-120.doi: 10.12160/j.issn.1672-5190.2020.01.023

• 动物疾病防控 • 上一篇    下一篇

羊泰勒虫吉林株的鉴定及系统进化分析

田万年, 徐雪雪, 张佳娟   

  1. 吉林农业科技学院动物科技学院,吉林 吉林 132101
  • 收稿日期:2019-12-06 出版日期:2020-01-30 发布日期:2020-03-05
  • 作者简介:田万年(1980—),男,讲师,博士,主要研究方向为动物疫病防治。

Identification and Phylogenetic Analysis of Ovine Theileria Jilin Strains

TIAN Wan-nian, XU Xue-xue, ZHANG Jia-juan   

  1. College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin 132101, China
  • Received:2019-12-06 Online:2020-01-30 Published:2020-03-05

摘要: 为了解吉林省延边地区流行的羊泰勒虫种类,采用血涂片镜检和PCR方法对羊泰勒虫进行鉴定和遗传学分析。血涂片镜检观察发现,血涂片红细胞中存在圆形虫体。对羊泰勒虫MPSP基因生物信息学分析显示,MPSP编码的蛋白包含3个N-糖基化位点,14个潜在抗原表位,含有信号肽结构。建立系统进化树显示,分离到的3个虫株与Theileria luwenshunli(GQ281044)同源性为100%,亲缘关系较近,分离的羊泰勒虫为吕氏泰勒虫。由该试验结果可以得出,吉林省延边地区流行的羊泰勒虫为吕氏泰勒虫。

关键词: 羊泰勒虫, MPSP基因, 生物信息学, 系统发育树

Abstract: In order to determine the dominantly prevalent species of ovine Theileria in Yanbian region of Jilin Province, the blood smear microscopy and PCR assay were used to identify the ovine Theileria from the clinical samples, and the phylogenetical analysis of the isolates was carried out subsequently. Blood smear microscopy revealed that round worms were present in the red blood cells of the blood smear. Bioinformatical analysis of the MPSP gene of ovine Theileria Jilin strains demonstrated that the protein encoded by MPSP contains 3 N-glycosylation sites, 14 potential epitopes and a signal peptide structure. The established phylogenetic tree showed that the three clinical isolates in this study were 100% homologous to Theileria luwenshunli (GQ281044) and had a close relationship, indicating that the isolated ovine Theileria were Theileria luwenshuni. The prevalence of Theileria luwenshuni in Jilin Province was observed in this study.

Key words: ovine Theileria, MPSP gene, bioinformatics, phylogenetic tree

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