论文

鸡传染性法氏囊病超强毒株的分子鉴定

  • 詹丽娥 ,
  • 陆冰洋 ,
  • 刘华栋 ,
  • 王彩先 ,
  • 唐娟 ,
  • 詹海杰 ,
  • 李芹 ,
  • 王建忠 ,
  • 丁壮
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  • 1. 山西省农业科学院畜牧兽医研究所, 山西太原 030032;
    2. 吉林大学动物医学学院,吉林长春 130062
詹丽娥(1959-),山西清徐人,副研究员,主要从事动物传染病研究

收稿日期: 2013-05-02

  修回日期: 2013-05-02

  网络出版日期: 2014-10-14

基金资助

山西省科技厅攻关项目(20120311023)

Molecular Identification of Very Virulent Infectious Bursal Disease Virus

  • Zhan Lie ,
  • Lu Bingyang ,
  • Liu Huadong ,
  • Wang Caixian ,
  • Tang Juan ,
  • Zhan Haijie1 ,
  • Li Qin ,
  • Wang Jianzhong ,
  • Ding Zhuang
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  • 1. Institute of Animal Husbandry & Veterinary Sciences,Shanxi Academy of Agricultural Sciences, Taiyuan 030032,China;
    2. College of Veterinary Medicine,Jilin University, Changchun 130062,China

Received date: 2013-05-02

  Revised date: 2013-05-02

  Online published: 2014-10-14

摘要

通过RT-PCR方法从山西省不同地区养鸡场病、死鸡法氏囊组织中扩增得到IBDV SX/12 VP2基因全长,将其克隆至pMD18-T载体。测序分析结果表明,IBDV SX/12 VP2全长为1 356 bp,推导其编码452个氨基酸;核苷酸与氨基酸同源性分析显示,二者均与超强参考毒株同源性较高,分别为99.2%和99.6%;遗传进化树分析结果表明,IB-DV SX/12与超强参考毒株位于同一进化分支,IBDV SX/12高变区关键氨基酸具有以下特征:222S,249Q,254G,256I,279D,284A,294I,299S以及SWSASGS七肽区不变,超强参考毒株高变区关键氨基酸为:222A,249Q,254G,256I,279D,284A,294I,299S,除222S外,其他关键位点氨基酸均符合超强毒株特征,因此,从分子水平推断IBDV SX/12属于超强毒株。

本文引用格式

詹丽娥 , 陆冰洋 , 刘华栋 , 王彩先 , 唐娟 , 詹海杰 , 李芹 , 王建忠 , 丁壮 . 鸡传染性法氏囊病超强毒株的分子鉴定[J]. 华北农学报, 2013 , 28(3) : 234 -238 . DOI: 10.3969/j.issn.1000-7091.2013.03.042

Abstract

The infectious bursal disease virus VP2 gene was amplified from bursa tissues of infected chickens in different areas of Shanxi province by RT-PCR,and then cloned to pMD18-T vector for sequence analysis. The results revealed that the SX/12 VP2 gene contained 1 356 nucleotides and encoded 452 amino acid. Compared with those other stains from GenBank, the SX/12 VP2 shared 99. 2% homology with other very virulent infectious bursal disease virus( vvIBDV) strains at nucleotide level and 99. 6% homology at amino acid level. The phylogenetic analysis showed that SX/12 was in the same lineage with the vvIBDV reference strains. The key amino acid in hypervariable region except 222(S) represented the typical feature of those of vvIBDV strains at the positions of 249( Q) ,254( G) , 256( I) ,2 79(D),284(A),294(I),299(S) and SWSASGS at positions of 326-332. These results demonstrated that SX/12 was classified to be vvIBDV.

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