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建兰花叶病毒南京分离物基因组测定与侵染性克隆构建

DOI: 10.7685/j.issn.1000-2030.2013.04.003, PP. 13-17

Keywords: 建兰花叶病毒,侵染性克隆,载体构建

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Abstract:

以建兰花叶病毒(CyMV)南京分离物侵染本氏烟的叶片为材料,利用RT-PCR扩增CyMV基因组cDNA,并进行测序,得到全长序列(GenBank登录号JQ860108),然后插入到pCass4-Rz载体中,构建CyMV侵染性克隆载体。序列分析表明,与已报道的石斛兰、蝴蝶兰、香草兰分离物序列同源性高达96%以上,并且具有相同的基因组结构;不同国家和地区的序列进化树分析表明,其与我国台湾地区的病毒分离物亲缘关系最近。侵染性克隆通过农杆菌侵染接种本氏烟,与CyMV分离物具有相同的症状,并可利用RT-PCR检测到其外壳蛋白基因,表明成功构建了具有生物活性的CyMV侵染性克隆。

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