生物技术通报 ›› 2019, Vol. 35 ›› Issue (5): 170-175.doi: 10.13560/j.cnki.biotech.bull.1985.2018-0936

• 技术与方法 • 上一篇    下一篇

转基因大豆RPA检测技术的建立及应用

窦雯1, 李尤1, 逯欣宇2, 钱雪梅1, 沈丹宇2   

  1. 1.南京外国语学校,南京 210008;
    2.南京农业大学,南京 210095
  • 收稿日期:2018-11-01 出版日期:2019-05-26 发布日期:2019-05-23
  • 作者简介:窦雯,女;E-mail:2375453141@qq.com
  • 基金资助:
    国家自然科学基金项目(31501589),中央高校基本科研业务费专项(KJQN201660)

Construction of a RPA Detection Method for Transgenic Soybean and Its Application

DOU Wen1, LI You1, LU Xin-yu2, QIAN Xue-mei1, SHEN Dan-yu2   

  1. 1.Nanjing Foreign Language School,Nanjing 210008;
    2.Department of Plant Pathology,Nanjing Agricultural University,Nanjing 210095
  • Received:2018-11-01 Published:2019-05-26 Online:2019-05-23

摘要: 旨在建立一种简单可行的转基因大豆RPA检测技术用于国内转基因大豆的监测。根据转基因植物中一般通用的CaMV35S启动子和NOS终止子序列设计了RPA引物,利用常规PCR技术筛选出了一组特异性强且高效的Nos163引物用于试剂条设计,并对RPA反应温度和时间进一步优化建立了转基因大豆的检测体系。该方法建立后,对南京市售的豆芽菜和鲜食豆荚,田间种植的大豆样品进行了检测,没有发现转基因成分的存在。研究结果表明转基因大豆RPA体系具有准确性好,比常规PCR检测技术灵敏度高,操作简便,不需要昂贵仪器,可以常温进行和结果肉眼可见等优点,可用于转基因大豆的快速检测。

关键词: 转基因大豆, 重组酶聚合酶扩增技术, 分子检测, PCR

Abstract: The goal of this work is to develop a fast and easy-operating RPA detection method for the GM soybean to monitor the illegal planting and spreading of the GM soybeans in China. Five pairs of RPA primers were initially designed based on the conserved sequences of CaMV-35S promoter and the NOS terminator in GM soybeans. PCR reactions were further performed to screen the primers and a set of RPA primers with the high sensitivity and specificity,Nos163,was selected for constructing RPA test strips. Reaction temperatures and times of RPA were also optimized. No transgenic component was detected from bean sprouts and fresh green soybean in market,as well as soy samples planted in field in Nanjing area using our RPA detection technique. All evidences suggest that RPA detection method is more sensitive than PCR,and can be performed under normal temperature without depending on the expensive equipment. The test results can be easily visualized,therefore which makes it an effective approach for the rapid detection of GM soybean.

Key words: transgenic soybean, recombinase polymerase amplification, molecular detection, PCR