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茶尺蠖核型多角体病毒湖北分离株的分子鉴定
引用本文:毛迎新,刘明炎,龚自明,张忠信,谭荣荣.茶尺蠖核型多角体病毒湖北分离株的分子鉴定[J].湖南农业大学学报(自然科学版),2010,36(6):685-689.
作者姓名:毛迎新  刘明炎  龚自明  张忠信  谭荣荣
作者单位:湖北省农科院果茶所,湖北省农科院果茶所,湖北省农科院果茶所,中国科学院武汉病毒研究所,湖北省农科院果茶所
基金项目:湖北省"十一·五"科技攻关项目,湖北省农业科技创新中心项目
摘    要:运用PCR技术扩增茶尺蠖核型多角体病毒安徽分离株(EcobNPV-AH)和湖北分离株(EcobNPV-HB)的同源重复序列2(hr2),并对湖北分离株的hr2进行克隆和序列测定.结果表明,茶尺蠖核型多角体病毒安徽分离株hr2扩增产物为2条DNA片段,大小约1300bp和1800bp,湖北分离株的hr2扩增产物为1条DNA片段,大小约1800bp,由基因型组成判断,EcobNPV-HB是新的地区分离株,其hr2全长1761个核苷酸,GC含量21.7%,编码540个氨基酸,具有重复性回文序列,较GenBank中登录的EcobNPV-AH的hr2多362个核苷酸.

关 键 词:茶尺蠖核型多角体病毒  湖北分离株  基因型  同源重复序列2
收稿时间:2010/5/27 0:00:00
修稿时间:2010/11/9 0:00:00

Molecular identification of Ectropis obliqua nucleopolyhedrovirus isolated from Hubei strains
maoyingxin,liumingyan,gongziming,zhangzhongxin and tanrongrong.Molecular identification of Ectropis obliqua nucleopolyhedrovirus isolated from Hubei strains[J].Journal of Hunan Agricultural University,2010,36(6):685-689.
Authors:maoyingxin  liumingyan  gongziming  zhangzhongxin and tanrongrong
Institution:Institute of Fruit & Tea, Hubei Academy of Agricultural Sciences,Institute of Fruit & Tea, Hubei Academy of Agricultural Sciences,Institute of Fruit & Tea, Hubei Academy of Agricultural Sciences,Wuhan Institute of Virology, Chinese Academy of Sciences,Institute of Fruit & Tea, Hubei Academy of Agricultural Sciences
Abstract:Homologous repeat region 2 (hr2) of Ectropis obliqua nucleopolyhedrovirus (EcobNPV) isolated from Hubei and Anhui strains were amplified by PCR. The results showed that only one 1.8 kb DNA fragment was amplified from EcobNPV-HB strains and two DNA fragments was amplified from EcobNPV-AH strains, which suggested that EcobNPV-HB strains was an independent strains different from EcobNPV-AH strains. hr2 of Ectropis obliqua nucleopolyhedrovirus isolated from Hubei strains was cloned into pMD18-T vector, sequenced and analyzed. The hr2 of EcobNPV-HB strains was composed of 1 761 nucleotides and coded 540 amino acids with a G+C content of 21.7%, comprised of perfect palindromes. Extra 362 nucleotides were observed compared with hr2 of EcobNPV-AH strains in GenBank.
Keywords:Ectropis obliqua nucleopolyhedrovirus  Hubei strains  genotype  homologous repeat region 2
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