闽西地区猪流行性腹泻病毒M基因遗传进化及分子结构特征分析  

Evolutionary and molecular characteristics of M genes of porcine epidemic diarrhea viruses in western Fujian,China

作　　者：董波[1,2] 安永帅 戴爱玲 李晓华[1,2] 杨小燕 DONG Bo;AN Yongshuai;DAI Ailing;LI Xiaohua;YANG Xiaoyan(College of Limb Scienee of Longyan University,Longyan 364012,China;Fujian Engineering Research Center for Swine Disease Control and Prevention,Longyan 364012,China)

机构地区：[1]龙岩学院生命科学学院,福建龙岩364012 [2]福建省生猪疫病防控工程技术研究中心,福建龙岩364012

出　　处：《浙江农业学报》2018年第6期939-945,共7页Acta Agriculturae Zhejiangensis

基　　金：福建省科技厅重大专项专题(2014NZ0002);福建省高校自然基金青年重点项目(JZ160481);福建省教育厅中青年科技项目(JAT160483);龙岩学院博士启动项目(LB2014004);大学生创新创业计划项目(2016017)

摘　　要：为了解2015—2017年闽西地区猪流行性腹泻病毒(PEDV)遗传进化规律,本研究收集了闽西地区12份PEDV阳性样品,对其M基因进行RT-PCR扩增,克隆至p MD18-T载体测序,并与国内外已知参考毒株序列进行比对及遗传进化分析。结果表明,12株闽西毒株M基因氨基酸序列同源性为100.0%;遗传进化分析表明,12株闽西毒株与经典毒株CV777、2010年前中国分离毒株LCZ、以及韩国毒株SM98、virulent DR13的亲缘性较远,而与2010年后国内分离毒株以及2013年美国分离毒株亲缘关系最近,说明闽西PEDV毒株属于目前国内外流行毒株。分子结构特征分析表明,PEDV M基因具备高度保守的特性,可以作为设计疫苗的候选基因。To elucidate evolutionary characteristics of the memberane（ M） genes of porcine epidemic diarrhea viruses in Fujian,China,12 samples collected from Fujian province during 2015 to 2017 were screened by multiplex RTPCR,M genes of PEDV viruses from positive samples were amplified by RT-PCR and cloned into p MD18-T vectors for sequencing respectively. The sequence data were done alignment and phylogenetic analysis with sequences from known reference strains. The M genes from 12 representative positive samples shared 100. 0% identity at amino acid level. 12 representative positive samples are remote to classical strain CV777,SM98 and virulent DR13. 12 representative strains belong to the genotype variant strain. Molecular structure characteristics analysis showed that M gene is highly conservative and could be an optimal candidate protein for vaccine development.

关 键 词：猪流行性腹泻病毒 M基因 进化特征 分子特征 

分 类 号：S858.28[农业科学—临床兽医学]