中国畜牧兽医

• 疾病防治 • 上一篇    下一篇

山羊腹泻粪便中奇异变形杆菌的分离鉴定及系统发育分析

陈曦,王远微,王永,汤承   

  1. 西南民族大学生命科学与技术学院,四川成都 610041
  • 收稿日期:2014-01-22 出版日期:2014-08-20 发布日期:2014-08-22
  • 通讯作者: 汤承。E-mail: tangcheng101@163.com
  • 作者简介:陈曦(1990—),女,河南人,硕士生,研究方向:动物病原学。
  • 基金资助:

    国家星火计划重大项目课题(2012GA810001-6)。

Isolation, Identification and Phylogenetic Analysis of Proteus mirabilis from Goats with Diarrhea

CHEN Xi, WANG Yuan-wei, WANG Yong, TANG Cheng   

  1. College of Life Science and Technology,Southwest University for Nationalities,Chengdu 610041,China
  • Received:2014-01-22 Online:2014-08-20 Published:2014-08-22

摘要: 该研究从四川成都某羊场腹泻简阳大耳山羊粪便中分离鉴定出奇异变形杆菌(14/20),随机选取5个菌株腹腔注射小鼠,5×108 CFU/只,小鼠于接种后12 h内全部死亡。PCR扩增分离株的16S rRNA序列,测序结果显示其与GenBank中奇异变形杆菌的序列同源性为99%~100%,分离菌株间的同源性为99.8%~100%;系统发育分析结果显示,分离菌株与不同宿主源奇异变形杆菌共聚为2个分支,存在一定的多样性,但其进化不存在显著的地域及宿主相关性。本研究结果表明,奇异变形杆菌与山羊腹泻密切相关,对养羊业的危害及公共卫生学意义值得关注。

关键词: 山羊; 腹泻; 奇异变形杆菌; 分离鉴定; 16S rRNA; 系统发育分析

Abstract: Proteus mirabilis were identified from goat manure samples with diarrhea from a goat farm in Chengdu of Sichuan province (14/20). 5 isolates (5×108 CFU each) were randomly selected from 17 Proteus mirabilis and infected into mice by intraperitoneal injection. The results showed that all of the injected mice were dead within 12 h. 16S rRNA genes of Proteus mirabilis isolates were sequenced and analyzed. The genes shared 99% to 100% homology with the sequence of Proteus mirabilis available in GenBank, and shared a homology of 99.8% to 100% within isolates in this study. Phylogenetic analysis showed that isolates clustered into two branches and presented some diversity, but no significant correlation of evolution between different areas and hosts. In conclusion, Proteus mirabilis was closely involved in goat diarrhea. Its harm to the sheep industry and public health significance should be seriously concerned.

Key words: goats; diarrhea; Proteus mirabilis; isolation and identification; 16S rRNA; phylogenetic analysis