›› 2010, Vol. 37 ›› Issue (5): 166-169.

• 疾病防治 • 上一篇    下一篇

猪胸膜肺炎放线杆菌新疆株的分离鉴定及 ApxⅣA基因的克隆与序列分析

郝成武,王永霞,李尚华,马勋   

  1. (新疆石河子大学动物科技学院, 石河子 832003)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-05-20 发布日期:2010-05-20
  • 通讯作者: 马勋

The Isolation and Identifcation of Actinobacillus Pleuropneumoniae and Cloning and Sequence Analysis of ApxIVA Specific Fragment in Xinjiang

HAO Cheng-wu, WANG Yong-xia, LI Shang-hua, MA Xun   

  1. (College of Animal Science and Technology, Xinjiang Shihezi University, Shihezi 832003, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-05-20 Published:2010-05-20
  • Contact: MA Xun

摘要: 从新疆北疆4个规模化猪场的20份发病猪病料中分离到1株细菌。经形态染色镜检、培养特性、生化特性和部分生物学特性试验鉴定为猪胸膜肺炎放线杆菌。根据猪胸膜肺炎放线杆菌ⅣA毒素基因特异性引物进行PCR扩增,得到1条与预期大小一致的2427 bp的条带,将PCR产物纯化后克隆至pMD19-T载体上并测序。结果表明,该片段的碱基序列与GenBank中参考序列的同源性为98%,并与三株标准株比较,同源性分别为98.23%、99.46%和98.06%。

关键词: 分离; 鉴定; ApxⅣ毒素基因克隆; 序列分析

Abstract: A strain of Actinobacillus pleuropneumoniae(APP) is isolated from 20 cases of swine which may be infected with APP from 4 large-scale pig farms in the north of Xinjiang. The strains were identified by morphologic, cultural and biochemical characteristics. And according to the sequence of APP, the 2427 bp of N-terminal of ApxⅣA was amplified by PCR cloned into pMD19-T vector and sequence analyzed. The results of DNA sequence comparison of the amplified fragment with the published sequence in GenBank showed 98% nucleotide homology, comparing with the three standard strains. The homlogy is separately 98.23%, 99.46%, 98.06%.

Key words: isolation; identification; ApxⅣ cloning; sequencing

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