›› 2009, Vol. 36 ›› Issue (12): 57-59.

• 生物技术 • 上一篇    下一篇

小鼠隐藏管状线虫线粒体cox1基因的扩增及序列分析

李鑫, 陈晓梅, 范文颖, 邓均有, 宋慧群, 朱兴全, 林瑞庆   

  1. (华南农业大学兽医学院, 广州 510642)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-12-20 发布日期:2009-12-20
  • 通讯作者: 林瑞庆

PCR Amplification and Sequence Analysis of Mitochondrial Cytochrome c Oxidase Subunit 1 (cox1) of Syphacia obvelata from Mice

LI Xin, CHEN Xiao-mei, FAN Wen-ying, DENG Jun-you,SONG Hui-qun, ZHU Xing-quan, LIN Rui-qing   

  1. (College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-20 Published:2009-12-20
  • Contact: LIN Rui-qing

摘要: 对从试验小鼠体内分离的蛲虫样品PMZ1-5的线粒体细胞色素c氧化酶第I亚基(cox1)的部分基因(pcox1)进行PCR扩增、测序及序列分析,并与网上相关序列进行比对分析,研究其线粒体pcox1基因遗传变异情况。结果表明,获得pcox1有效序列373 bp,经序列比对分析,发现5个蛲虫样品之间的变异很小,只有1个碱基的差异,序列相似性为99.73%~100%,BLAST分析结果表明为隐藏管状线虫,与同属的Syphacia montana序列差异性为5.24%~5.68%。结果表明,隐藏管状线虫的pcox1序列种内变异很小,种间差异明显,本结果为进一步研究蛲虫的群体遗传学奠定了基础。

关键词: 蛲虫; 线粒体DNA; 细胞色素c氧化酶第I亚基(cox1); PCR

Abstract: The partial sequences of mitochondrion cox1 (pcox1) gene of 5 pinworm samples separated from mice were amplified by PCR and the positive products were sequenced. Then sequences were analysed by BLAST and compared with Syphacia obvelata and S. montana available in GenBank. The results revealed that the length of the pcox1 sequence was 373 bp. Sequence alignments showed that genetic variation within 5 pinworm samples was very small, with only one mutation locus, and these samples were identified as S. obvelata by BLAST. The inter-specific sequence difference was 5.24%-5.28% between S. obvelata samples and S. montana available in GenBank. These findings showed that the intra-specific variations of cox1 were low for S. obvelata and the inter-specific sequence differences were comparatively higher between S. obvelata and S. montana. The results provided foundation for further studies of population genetics of pinworms. 

Key words: pinworm; mitochondrial DNA; cytochrome c oxidase subunit 1(cox1)gene; PCR

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