中国寄生虫学与寄生虫病杂志 ›› 2001, Vol. 19 ›› Issue (2): 11-102.

• 论著 • 上一篇    下一篇

隐孢子虫种株的RAPD分析

田宗成,张西臣,王静敏,尹继刚,李建华,陈建宝,杨举军
  

  1. 需大学动物科技系预防兽医学教研室!长春130062;
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2001-04-30 发布日期:2001-04-30

Random Amplified Polymorphic DNA Analysis of Cryptosporidium Species and Strains

TIAN Zong-cheng;ZHANG Xi-chen;WANG Jing-min;YIN Ji-gang;LI Jian-hua;CHEN Jian-bao;YANG Ju   

  1. Department of Preventive Veterinary Science;the Quartermaster University of PLA;Changchun 130062
  • Received:1900-01-01 Revised:1900-01-01 Online:2001-04-30 Published:2001-04-30

摘要:   目的 对鼠隐孢子虫 (Cryptosporidiummuris)、小球隐孢子虫 (Cryptosporidiumparvum)和火鸡隐孢子虫 (Cryptosporidiummeleagridis) 3个种 8个虫株进行随机扩增多态性DNA (RAPD)分析。 方法 从2 0 0个引物中选用重复性较好的 2 6个引物对所有虫株进行随机扩增。结果 RAPD分析结果表明 :①在隐孢子虫不同种 (C muris、C parvum和C meleagridis)之间的基因存在明显的差异 ,平均遗传距离为 7 0 37;②同种不同分离株之间均有一定差异 ,平均遗传距离为 5 16 2。结论 RAPD技术能鉴别 8个隐孢子虫分离株共有和各自特有基因片段。

关键词: 隐孢子虫, RAPD, 遗传距离

Abstract:  Objective To analyse the genetic heterogeneity of 8 isolates of Cryptosporidium belonging to three species ( Cryptosporiduim muris,Cryptosporiduim parvum and Cryptosporidium meleagridis ) using RAPD technique.Methods DNA extracts of the 8 isolates were amplified by PCR using 26 out of 200 primers. The amplified products were separated by agar electrophoresis followed by staining with ethidium bromide.Results RAPD analysis revealed:① Obvious differences among species were found, the average genetic distance being 7.037;② Certain differences among different isolates of the same species were found,the average genetic distance being 5.162.Conclusion RAPD could differentiate the common and respective gene fragments of the 8 isolates of Cryptosporidium .

Key words: Cryptosporidium, RAPD, genetic distance