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园艺学报 ›› 2018, Vol. 45 ›› Issue (8): 1613-1620.doi: 10.16420/j.issn.0513-353x.2018-0164

• 新技术与新方法 • 上一篇    下一篇

马铃薯S病毒PVSO株系RT-LAMP检测方法的建立及应用

李华伟,许泳清,罗文彬,纪荣昌,刘中华,许国春,张 鸿,李国良,林赵淼,邱永祥,邱思鑫,汤 浩*   

  1. 福建省农业科学院作物研究所,农业部南方薯类科学观测实验站,福州 350013
  • 出版日期:2018-08-25 发布日期:2018-08-25
  • 基金资助:

    福建省公益类科研院所基本科研专项(2016R1025-8);国家现代农业产业技术体系建设专项资金项目(CARS-10-ES09);国家重点研发计划课题(2018YFD0200809);福建省农业科学院创新团队项目(STIT2017-2-3)

Establishment of Loop-mediated Isothermal Amplification Assay for Detection of Potato virus S Ordinary Strain

LI Huawei,XU Yongqing,LUO Wenbin,JI Rongchang,LIU Zhonghua,XU Guochun,ZHANG Hong,LI Guoliang,LIN Zhaomiao,QIU Yongxiang,QIU Sixin,and TANG Hao*   

  1. Crop Research Institute,Fujian Academy of Agricultural Sciences,Scientific Observing and Experimental Station of Tuber and Root Crops in South China,Ministry of Agricultrue,P. R. China,Fuzhou 350013,China
  • Online:2018-08-25 Published:2018-08-25

摘要:

为建立一种马铃薯S病毒普通株系PVSO快速、灵敏的RT-LAMP可视化检测方法。根据马铃薯S病毒普通株系的CP核苷酸序列设计4条引物,以感染PVS的马铃薯叶片总RNA为模板,采用一步法RT-LAMP,在62 ℃下反应60 min,扩增产物利用琼脂糖电泳分析和钙黄绿素染料显色判断结果,同时对其特异性和灵敏性进行测定。结果表明,建立的RT-LAMP方法可特异地对PVSO进行检测,检测灵敏度为RT-PCR的100倍。对33份马铃薯样品检测表明,RT-LAMP与RT-PCR方法检测结果基本一致。因此建立的PVSO的 RT-LAMP可视化检测方法简便,特异性强,灵敏度高,适合PVSO的快速检测。

关键词: 马铃薯, 马铃薯S病毒, 环介导等温扩增, 钙黄绿素

Abstract:

The object of this study is to develop a One-step reverse transcription loop-mediated isothermal amplification(RT-LAMP)assay for rapid and sensitive detection of Potato virus S ordinary strain(PVSO). Four RT-LAMP primers were designed on the basis of the coat protein(CP)gene sequences of PVSO,and template RNA from infected leaves were used for One-step RT-LAMP which were carried out under isothermal conditions at 62 ℃ for 60 minutes. RT-LAMP products were analyzed by electrophoresis in agarose gels followed by staining with Calcein. Then the specificity and sensitivity of RT-LAMP were testified. A rapid and specific RT-LAMP method for detection of PVSO was established. Sensitivity of the RT-LAMP assay was 100-fold higher than ordinary RT-PCR method,and the testing results of 33 potato samples were basically consistent with RT-PCR. The RT-LAMP described in this study represents a sensitive,specific and rapid assay for the detection of PVSO.

Key words: potato, Potato virus S, LAMP, calcein

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