RT-PCR快速检测3种烟草病毒技术
Acta Agriculturae Boreali-Sinica(2007)
Abstract
为了快速提取植物叶片的总RNA,并对烟草病毒进行检测,对提取及检测方法进行了研究。结果表明:以黄瓜叶片、白肋烟叶片为试材,用TRIzol试剂盒在1 h内提取到纯度高、完整性好的总RNA。设计烟草花叶病毒、黄瓜花叶病毒和马铃薯X病毒的特异性引物,RT-PCR检测,从感病叶片中分别扩增出313,326,392 bp的目的片断,而健康叶片中无此扩增带。构建这3种病毒重组质粒,对核苷酸序列与GeneBank中报道的进行比较,同源性分别为99.36%,97.55%,98.21%。用这种方法快速、可靠,为烟草病毒的检测提供科学依据。
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Key words
Cucumber mosaic virus,Tabacoo mosaic virus,Potato X virus,RT-PCR
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