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中国生物防治学报 ›› 2020, Vol. 36 ›› Issue (5): 795-801.DOI: 10.16409/j.cnki.2095-039x.2020.05.015

• 研究论文 • 上一篇    下一篇

基于环介导等温扩增技术的玫烟色棒束孢可视化检测

刘晓菲1, 陈睿元2, 郑宇1   

  1. 1. 福建省农业科学院植物保护研究所/农业部福州作物有害生物科学观测实验站/福建省作物有害生物监测与治理重点实验室, 福州 350013;
    2. 福州第一中学, 福州 350000
  • 收稿日期:2019-12-02 出版日期:2020-10-08 发布日期:2020-11-20
  • 通讯作者: 郑宇,博士,研究员,E-mail:zhengyu@faas.cn。
  • 作者简介:刘晓菲,硕士,实习研究员,E-mail:lxf_sophie@126.com
  • 基金资助:
    福建省公益类科研院所专项(2015R1024-4,2017R1025-4,2017R1025-1);福建省科技重大专项(2017NZ0003-1)

Visual Detection of Entomogenous Fungi Isaria fumosorosea by Loop-mediated Isothermal Amplification Technology

LIU Xiaofei1, CHEN Ruiyuan2, ZHENG Yu1   

  1. 1. Fuzhou Scientific Observing and Experimental Station of Crop Pests of Ministry of Agriculture/Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests/Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
    2. Fuzhou No.1 High School, Fuzhou 350000, China
  • Received:2019-12-02 Online:2020-10-08 Published:2020-11-20

摘要: 玫烟色棒束孢Isaria fumosorosea是一种重要的虫生真菌,已成为微生物源农药的一个要资源。由于缺乏有效手段,无法对罹病害虫中玫烟色棒束孢进行大量、快速、准确的检测,严重制约了该生防菌株防治效果的科学评价。本研究通过环介导等温扩增(LAMP)技术的引物设计和体系优化,建立了玫烟色棒束孢菌株可视化的LAMP检测方法。该检测方法特异性强,准确率高,与其他常见生防菌株和病原菌无交叉反应;检测时间短,60 min可得到阳性结果;灵敏度高,是常规PCR方法的100倍。该方法的建立为田间条件下玫烟色棒束孢菌株的毒力测定与安全性评价提供了新技术。

关键词: 虫生真菌, 玫烟色棒束孢, 环介导等温扩增, 可视化检测

Abstract: Isaria fumosorosea is an important entomogenous fungus and has become an important resource for microbial pesticides. Due to the lack of effective methods, a large number of rapid and accurate detections of I. fumosorosea in the diseased pests are impossible, which limits the scientific evaluation of the control effect of related biocontrol strains. In this study, through the primers designed and system optimization of the loop-mediated isothermal amplification (LAMP), a visual LAMP detection method was established for I. fumosorosea. The detection method had strong specificity, high accuracy, and no cross reaction with other common biocontrol strains and pathogenic bacteria; the detection time was short, and a positive result could be obtained in 60 minutes; the sensitivity was high, which was 100 fold that of conventional PCR detection methods. The establishment of this method provides a new technology for the virulence determination and safety evaluation of I. fumosorosea under field conditions.

Key words: entomogenous fungi, Isaria fumosorosea, LAMP, visual detection

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