畜牧兽医学报 ›› 2012, Vol. 43 ›› Issue (6): 972-978.

• 预防兽医 • 上一篇    下一篇

基于线粒体12S基因对青海地区细粒棘球蚴种群遗传多态性研究

延宁1,聂华明1,蒋忠荣2,邓世金2,余华3,严玉宝3,达瓦次仁4,谢跃1,付彦1,杨德英1,郝桂英1,古小彬1,杨光友1*   

  1. 1. 四川农业大学动物医学院,雅安 625014; 2.四川省甘孜州畜牧科学研究所,康定 626000;3.四川出入境检验检疫局,成都 610041; 4.西藏自治区动物疫病预防控制中心,拉萨 850000
  • 收稿日期:2011-11-07 出版日期:2012-06-25 发布日期:2012-06-25
  • 通讯作者: 杨光友
  • 作者简介:延宁(1985-),男,山东东营人,硕士,主要从事动物寄生虫病学研究,E-mail:yn2524117@163.com
  • 基金资助:

    国家科技支持计划项目(2006BAI06B09);国家质检总局科技计划项目(2009IK019)

Genetic Polymorphisms of Echinococcus granulosus in Qinghai Based on the Mitochondrial DNA 12S Gene

YAN Ning1, NIE Hua-ming1, JIANG Zhong-rong2, DENG Shi-jin2, YU Hua3, YAN Yu-bao3, Dawa Ciren4, XIE Yue1, FU Yan1, YANG De-ying1, HAO Gui-ying1, GU Xiao-bin1, YANG Guang-you1*   

  1. 1. College of Veterinary Medicine, Sichuan Agricultural University, Ya'an 625014, China; 2. Ganzi Animal Science Research Institute, Kangding 626000, China; 3. Sichuan EntryExit Inspection and Quarantine Bureau, Chengdu 610041, China; 4. Xizang Preventive and Control Center for Animal disease, Lasa 850000, China
  • Received:2011-11-07 Online:2012-06-25 Published:2012-06-25
  • Contact: YANG Guangyou

摘要:

本研究旨在分析青海地区细粒棘球蚴的种群基因多态性,为细粒棘球蚴病的防控提供基础资料。对采自青海地区的42株细粒棘球蚴(33株采自绵羊肝脏,9株采自绵羊肺脏)进行了线粒体12S基因的全序列测序并构建了NJ系统发生树。结果显示:在本研究样品的线粒体12S基因序列中共检测出5种单倍型(即H1~H5),其中以单倍型H5为主(占32株),并且系统发生树分析支持这一结果。单倍型多样性(H)和核苷酸多样性(Pi)分别为0.418、0.000 66,与E. granulosus G1(AF297617)的12S基因序列的核苷酸相似性达到99.86%以上。采自青海地区的42株细粒棘球蚴均鉴定为E. granulosus sensu stricto(基因型G1-G3),在检测出的5种单倍型中,单倍型H1~H4是本地区特有的单倍型。

关键词: 细粒棘球蚴, 12S基因, 遗传多态性, 青海

Abstract:

The aim of the current study was to investigate the genetic polymorphisms of Echinococcus granulosus obtained from sheep in Qinghai Province, and provide the foundational data for prevention and control of echinococcus disease. The complete mitochondrial DNA 12S genes of 42 isolates(33 were from liver and 9 were from lung)were sequenced, and phylogenetic analyses were conducted using neighbor-joining tree-building methods. There were five haplotypes (H1 to H5) detected among the samples, and H5 was the main type. Phylogenetic analysis supported these observations. The haplotype diversity (H) and nucleotide diversity (Pi) were 0.418 and 0.000 66, respectively. It was demonstrated that the genetic homology of these isolates with the 12S gene of E. granulosus G1 genotype(AF297617)was over 99.86%. All 42 samples were identified as E. granulosus sensu stricto (G1-G3 clusters). In this study,genotypes H1 to H4 has not been identified elsewhere.

Key words: Echinococcus granulosus, 12S gene, genetic diversity, Qinghai

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