中国寄生虫学与寄生虫病杂志 ›› 2019, Vol. 37 ›› Issue (4): 448-452.doi: 10.12140/j.issn.1000-7423.2019.04.014

• 论著 • 上一篇    下一篇

湖南省不同种类蛇源裂头蚴线粒体pnad1基因序列多态性研究

谭磊1(), 王爱兵1, 孔小鲜1, 梁轩2, 贺峻琳1, 李洁1, 胡丹1, 刘伟1,*()   

  1. 1 湖南农业大学动物医学院,长沙410128
    2 安化县农业和粮食局,益阳 413500
  • 收稿日期:2018-12-20 出版日期:2019-08-30 发布日期:2019-09-05
  • 通讯作者: 刘伟
  • 作者简介:

    作者简介:谭磊(1994-),男,博士研究生,从事动物传染病诊断与防控研究。E-mail: 812442773@qq.com.

  • 基金资助:
    湖南省科技厅项目(No. 2016NK2104);湖南省教育厅优秀青年基金项目(No. 17B126);湖南省畜牧局项目资助(No. 2139999)

Polymorphism of mitochondrial pnad1 gene of Spirometra erinaceieuropaei sparganum isolated from different species of snake in Hunan Province

Lei TAN1(), Ai-bing WANG1, Xiao-xian KONG1, Xuan LIANG2, Jun-lin HE1, Jie LI1, Dan HU1, wei LIU1,*()   

  1. 1 College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
    2 Anhua Agricultural Bureau, Yiyang 413500, China
  • Received:2018-12-20 Online:2019-08-30 Published:2019-09-05
  • Contact: wei LIU
  • Supported by:
    Supported by Hunan Science and Technology Department(No. 2016NK2104), Hunan Education Department Excellent Youth Fund (No. 17B126), Hunan Animal Husbandry Bureau(No. 2139999)

摘要:

目的 对湖南省不同种类蛇源裂头蚴进行形态学与分子生物学鉴定,并分析其线粒体烟酰胺腺嘌呤二核苷酸脱氢酶第1亚基基因部分序列(pnad1)多态性。方法 对从湖南永州、郴州、岳阳等地区6种常见的野生蛇体内获得的11条裂头蚴(来自大王蛇3条、乌梢蛇2条、眼镜蛇1条、灰鼠蛇2条、滑鼠蛇2条和银环蛇1条)进行形态学鉴定,PCR扩增其线粒体pnad1,并测序,分析其核苷酸序列种内差异,并与已报道的迭宫属绦虫和其他属绦虫的相应序列进行同源性比较;以土耳其斯坦东毕吸虫为外群,用软件MEGA7.0采用邻接法构建系统进化树。结果 从不同蛇类分离的11条虫体经形态学鉴定为裂头蚴。PCR扩增出11条裂头蚴分离株的nad1序列,片段大小为648 bp,种内遗传差异分别为0~1.4%。与GenBank中收录的欧猬迭宫绦虫分离株序列相似性为97.8%~99.3%,与其它绦虫的序列相似性均低于74.3%。系统进化树结果显示,本研究分离的不同蛇源裂头蚴分离株与已知欧猬迭宫绦虫聚为一支,与微小膜壳绦虫和阔节裂头绦虫亲缘关系较近,与其它绦虫分支相隔较远。结论 湖南省不同蛇源裂头蚴分离株均为欧猬迭宫绦虫,但存在一定的遗传变异,且线粒体pnad1基因适合作为分子标记对蛇源裂头蚴进行遗传变异研究。

关键词: 蛇源裂头蚴, 线粒体, 线粒体烟酰胺腺嘌呤二核苷酸脱氢酶第1亚基基因部分序列基因, 系统发育研究

Abstract:

Objective Spirometra erinaceieuropaei sparganum larvae were isolated from different species of snake and identified by morphology and molecular biology. The polymorphism of partial mitochondrial NADH dehydrogenase subunits 1 gene(pnad1) amplified from these isolated spargana was analyzed for its potential as a species marker. Methods Eleven sparganum larvae of S. erinaceieuropaei were isolated from different species of wild snake [Elaphe carinata (3), Zaocys dhumnade (2), Naja (1), Ptyas korros (2), Ptyas mucosus (2) and Bungarus multicinctus(1)] in Yongzhou, Chenzhou, Yueyang of Hunan Province and identified by morphology and DNA sequence. The pnad1 gene was amplified from these spargana isolated from different snakes and sequenced. The obtained sequences were aligned to determine their nucleotide variations and compared with their homologues from other tapeworms, and then a phylogenetic tree was constructed accordingly using MEGA7.0. Results The 11 larvae were identified as Spirometra erinaceieuropaei spargana by their morphology under microscopy and DNA sequence. The pnad1 gene was amplified from these collected spargana with size of 648 bp. The sequence results showed that the amplified pnad1 sequences were almost identical with 0-1.4% variation, but with 97.8%-99.3% sequence identity with different isolations of Spirometra erinaceieuropaei deposited in GenBank, and with less than 74.3% identity with pnad1 sequence of other tapeworms. Constracted phylogenetic tree based on the pnad1 gene sequences showed that the Hunan isolates were clustered in the same clade of Spirometra erinaceieuropaei, genetically closer to Dibothriocephalus latus and Hymenolepis nana, but further to other tapeworms. Conclusion The sparganum larvae isolated from different species of snakes in Hunan in the present study were identified as Spirometra erinaceieuropaei, and the mitochondrial pnad1 gene can be used as a genetic marker to identify tapeworm species.

Key words: Snake sparganum, Mitochondrial, Partial mitochondrial NADH dehydrogenase subunits 1 gene, Phylogenetic analysis

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