烟草花叶病毒山西番茄分离物的全基因组序列测定及分析

China Vegetables(2017)

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Abstract
为明确山西省晋中市侵染番茄的病毒种类,采用双链RNA(double-stranded RNA,dsRNA)技术和非序列依赖PCR扩增(sequence-independent amplification,SIA)方法对感病番茄进行分子鉴定.序列测定及分析发现,具有花叶、卷曲症状的番茄为烟草花叶病毒(Tobacco mosaic virus,TMV)所侵染.进一步克隆TMV番茄分离物(TMV-SXFQ)的全基因组序列,得到TMV-SXFQ(GenBank登录号为JX993906)全长为6 394 bp,含4个开放阅读框(open reading frame,ORF).序列比对分析表明,TMV-SXFQ与烟草花叶病毒属其他分离物的同源性为86.3% ~ 99.6%;系统进化分析表明,TMV-SXFQ与韩国分离物IM聚为一簇、亲缘关系最近.
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