›› 2009, Vol. 36 ›› Issue (2): 111-113.

• 疾病防治 • 上一篇    下一篇

禽大肠杆菌的分离与16S rRNA的鉴定

师福山,赵德明   

  1. (中国农业大学动物医学院国家动物海绵状脑病实验室, 北京 100193)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-02-20 发布日期:2009-02-20

Isolation and Identification of 16S rRNA of Escherichia coli from Chicken〖

SHI Fushan, ZHAO Deming

  

  1. (Laboratory of National Animal TSE,College of Veterinary Medicine , China Agricultural University, Beijing 100193 , China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-02-20 Published:2009-02-20

摘要: 从疑似患有大肠杆菌病的病死鸡群中采取粪便样品,分离病原进行生化鉴定,从8份样品中分离鉴定出6株大肠杆菌。根据细菌16S rRNA 基因的高度保守性,设计合成大肠杆菌的共同引物,对随机选取的1株细菌进行PCR扩增,并与GenBank中的E.coli 16S rRNA进行序列比对,确定这株细菌与大肠杆菌的同源性达99%以上。本方法特异性好,为实验室鉴定大肠杆菌提供了一种简单、容易操作的手段。

关键词: 大肠杆菌; 生化鉴定; 16S rRNA; PCR

Abstract: Feces samples were collected from sick and dead chicken likely caused by Escherichina coli in a chicken farm,thepathogens were isolated and biochemically identificated, 6 bacterium were isolated from 8 feces samples. According to the highly conservative nature of bacterial 16S rRNA gene, a set of primers with broad range for Escherichina coli was designed,and 1 strain of bacteria was detected by polymerase chain reaction (PCR) and compared with 16S rRNA sequence of Escherichina coli from GenBank.The resembling rate can exceed 99%.The established PCR method is specific ,simple , easy, and available to identify Escherichina coli.

Key words: Escherichia coli; biochemical identification; 16S rRNA; PCR

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