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半巢式RT—Realtime PCR检测南芥菜花叶病毒
作者:粟智平 杨益娥 邓丛良 李金庆 王颖 段效辉 来源:《现代农业科技》2015年第18期
摘要 根据南芥菜花叶病毒(ArMV)外壳蛋白(CP)基因的保守序列,设计合成了3条巢式PCR引物和1条TaqMAN荧光探针,建立了半巢式RT-Realtime PCR检测ArMV的新方法。该方法有机地结合了巢式PCR和TaqMAN探针检测技术。第二步半巢式-RT-Realtime PCR既是对第一步信号的进一步放大,也是对第一步PCR产物的确认,因此,检测的准确性、灵敏度比巢式PCR、Realtime PCR等方法高。结果表明:该方法检测灵敏度可达0.06 fg/μL植物总RNA。
关键词 南芥菜花叶病毒(ArMV);半巢式RT-Realtime PCR;检测 中图分类号 S41-30 文献标识码 A 文章编号 1007-5739(2015)18-0145-03 Dectection of Arabis Mosaic Virus by Semi-Nested RT-Realtime PCR
SU Zhi-ping 1 YANG Yi-e 2 DENG Cong-liang 3 LI Jin-qing 1 WANG Ying 1 DUAN Xiao-hui 1
(1 Yantai Entry-Exit Inspection and Quarantine Bureau,Yantai Shandong 264000; 2 Huitong County Agriculture Bureau of Hunan Province; 3 Beijing Entry-Exit Inspection and Quarantine Bureau)
Abstract Three nested primers and one TaqMAN probe were designed according to the CP gene of the Arabis mosaic virus,with which we set up a new method of semi-nested RT-Realtime PCR to detect the ArMV.The nest-PCR and the probe-detection technique were combined maneuverably in this study.The semi-nested RT-Realtime PCR in the second step could both magnify the sigal and validate the result of the first step,which could provide a more sensitive and specific detection of the ArMV.The sensitivity of the method could reach 0.06 fg/μL of total plant RNA.
Key words Arabis mosaic virus(ArMV);Semi-Nested RT-Realtime PCR;dectection 南芥菜花叶病毒(Arabis mosaic virus,ArMV)可侵染植物约174属215种,主要危害黄瓜、马铃薯、胡萝卜、樱桃、葡萄、草莓、大豆、菜豆等经济作物。其地理分布极广,在五大洲30余个国家有发生,属于世界性病害[1]。在我国未见该病毒危害的报道,是我国对外重要
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