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园艺学报 ›› 2022, Vol. 49 ›› Issue (11): 2471-2478.doi: 10.16420/j.issn.0513-353x.2021-0620

• 新技术新方法 • 上一篇    下一篇

甜瓜内源病毒CmEV的TaqMan RT-qPCR检测方法研究

赵立群1, 张晓飞2, 邱艳红2,3,*(), 刘慧2, 张建2,3, 杨静静2, 张海军2,3, 徐秀兰2,3, 温常龙2,3,*()   

  1. 1北京市农业技术推广站,北京 100029
    2农业农村部华北地区园艺作物生物学与种质创制重点实验室,北京市农林科学院蔬菜研究所,北京 100097
    3农业农村部蔬菜种子质量监督检验测试中心,北京 100097
  • 收稿日期:2022-01-19 修回日期:2022-03-24 出版日期:2022-11-25 发布日期:2022-11-25
  • 通讯作者: 邱艳红,温常龙 E-mail:qiuyanhong@nercv.org;wenchanglong@nercv.org
  • 基金资助:
    国家重点研发计划项目(2017YFD0102004)

Studies on Detection of Cucumis Melo Endornavirus Using TaqMan RT-qPCR Method

ZHAO Liqun1, ZHANG Xiaofei2, QIU Yanhong2,3,*(), LIU Hui2, ZHANG Jian2,3, YANG Jingjing2, ZHANG Haijun2,3, XU Xiulan2,3, WEN Changlong2,3,*()   

  1. 1Beijing Agricultural Extension Station,Beijing 100029,China
    2Key Laboratory of Biology and Genetics Improvement of Horticultural Crops(North China),Institute of Vegetable Science,Beijing Academy of Agricultural and Forestry Sciences,Beijing 100097,China
    3Supervision,Inspection and Test Center of Vegetable Seed Quality of Ministry of Agriculture and Rural Affairs,Beijing 100097,China
  • Received:2022-01-19 Revised:2022-03-24 Online:2022-11-25 Published:2022-11-25
  • Contact: QIU Yanhong,WEN Changlong E-mail:qiuyanhong@nercv.org;wenchanglong@nercv.org

摘要:

甜瓜内源病毒(cucumis melo endornavirus,CmEV)是近年来发现的寄主广泛、发病率高、种传率高的重要病毒。利用CmEV基因组的序列信息设计特异性引物和探针,建立基于探针法的实时荧光定量PCR(Real-Time Fluorescent Quantitative PCR with TaqMan probes,TaqMan RT-qPCR)的检测方法。该方法可以检测出1 × 10-2 ng · μL-1的RNA和1.8 × 103 copies · μL-1的质粒,灵敏度是普通PCR的100倍。利用该方法检测了在北京、山东、辽宁、海南瓜类种苗主产区的甜瓜、西瓜、黄瓜与南瓜砧木11份种苗带毒情况,发现山东和海南各有1份甜瓜种苗携带CmEV。本研究建立的CmEV TaqMan RT-qPCR方法特异性好、灵敏度高,可为开展病毒精准鉴定、科学防控以及从源头遏制病毒传播提供技术支撑。

关键词: 甜瓜内源病毒, TaqMan探针法荧光实时定量PCR, 葫芦科作物, 种苗带毒

Abstract:

Cucumis melo endornavirus is an important plant virus that infects a wide range of hosts,occurs popularly and transmits highly in seeds. One set of specific primers and probes were designed according to the conserved sequence of CmEV genome,and a detecting method of CmEV was established using the Real-Time Fluorescent Quantitative PCR with TaqMan probes(TaqMan RT-qPCR). This detection method could detect the virus in 1 × 10-2 ng · μL-1 RNA samples and 1.8 × 103 copies · μL-1 plasmids,the sensitivity of which was about one hundred times higher than traditional RT-PCR. We used the CmEV TaqMan RT-qPCR technique to detect 11 seedling lots of Cucumis meloCitrullus lanatusCucumis sativusCucurbita moschata stock that randomly sampled from the main cucurbit industries of Beijing,Shandong,Liaoning and Hainan provinces. It was found that Cucumis melo seedling from Shandong and Hainan industries carried CmEV. The novel TaqMan RT-qPCR method was proved to be efficient in testing CmEV,which could be a technical support for precisely detecting and scientific controlling of this virus,and could help preventing the virus spread from the source.

Key words: cucumis melo endornavirus, TaqMan qPCR, cucurbits crops, seedling-borne disease

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