›› 2012, Vol. 39 ›› Issue (6): 61-64.

• 生物技术 • 上一篇    下一篇

一株基因Ⅸ型鸭源新城疫病毒F基因的克隆及序列分析

袁远华1,2, 王俊峰1,2, 蔡丽丽1,2, 黄兴国2, 梁小英2, 曹伟胜1, 黄淑坚2   

  1. 1. 华南农业大学兽医学院,广东广州 510642;
    2. 佛山科学技术学院生命科学学院,广东佛山 528231
  • 修回日期:2011-12-16 出版日期:2012-06-20 发布日期:2012-07-02
  • 通讯作者: 黄淑坚(1966-),男,广东人,教授,博士,研究方向:畜禽传染病学。E-mail:sjhuang.foshan@163.com E-mail:sjhuang.foshan@163.com
  • 作者简介:袁远华(1988-),男,贵州人,硕士,研究方向:畜禽传染病学。
  • 基金资助:
    广东省科技厅农业攻关项目(2009B020418003)。

Cloning and Sequence Analysis of F Gene of a Genetype Ⅸ Newcastle Disease Virus Isolated from Duck

YUAN Yuan-hua1,2, WANG Jun-feng1,2, CAI Li-li1,2, HUANG Xing-guo2, LIANG Xiao-ying2, CAO Wei-sheng1, HUANG Shu-jian2   

  1. 1. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China;
    2. College of Life Science, Foshan University, Foshan 528231, China
  • Revised:2011-12-16 Online:2012-06-20 Published:2012-07-02

摘要: 从广东地区疑似患有新城疫的病死雏番鸭群中分离到1株新城疫病毒,命名为GD1002株。毒力测定结果表明,致死鸡胚平均死亡时间(MDT)、1日龄雏鸡脑内接种致病指数(ICPI)、6周龄鸡静脉接种致病指数(IVPI)分别为56.0 h、1.64、2.29,符合强毒株的毒力判断标准。利用RT-PCR扩增了该分离株F基因的主要功能区片段,并进行了克隆与序列分析。该分离株F蛋白裂解位点的组成为112R-R-Q-R-R-F117,具有典型新城疫强毒株的分子特征。F基因第47-420 nt片段基因分型分析表明,该流行株属于基因Ⅸ型。相似性及遗传进化分析结果表明,该分离株与基因Ⅸ型毒株F48E9、JS/1/97/Ch和FJ/1/85/Ch株有较高同源性和较近的亲缘关系。

关键词: 鸭; 新城疫病毒; F基因; 克隆; 序列分析

Abstract: Newcastle disease virus strain GD1002, isolated from the diseased ducks in Guangdong province in 2010, was velogenic according to the pathogenetic tests and highly pathogenicity to duck. The results of virulence determination showed that the MDT, ICPI and IVPI were 56.0 h, 1.64 and 2.29, respectively, belonged to velogenic strain virulence criterion. The F gene of GD1002 strain was amplified by reverse transcription polymerase chain reaction (RT-PCR). The cleavage motif 112R-R-Q-R-R-F117 of F protein was identical to the characteristic of velogenic strain. For genotyping, phylogenetic tree based on the nucleotide 47 to 420 nt of the F gene were performed using the isolate and other NDV sequences obtained from GenBank. The results revealed that the isolate belonged to genotype Ⅸ. And the results of nucleotide sequence homology and evolutionary processes analyses showed that the isolate had a close relationship with F48E9, JS/1/97/Ch and FJ/1/85/Ch strains.

Key words: duck; Newcastle disease virus; F gene; cloning; sequence analysis

中图分类号: