生物技术通报 ›› 2014, Vol. 0 ›› Issue (3): 60-64.

• 技术与方法 • 上一篇    下一篇

LAMP实时浊度法检测转基因植物NPTⅡ基因

邝筱珊, 胡松楠, 王小玉, 唐食明, 成晓维, 冯家望   

  1. (珠海出入境检验检疫局技术中心,珠海 519015)
  • 收稿日期:2014-01-08 出版日期:2014-03-29 发布日期:2014-03-31
  • 作者简介:邝筱珊,女,工程师,硕士,研究方向:食品安全检测;E-mail:carrolkuang@163.com
  • 基金资助:
    国家质检总局科技计划项目(2011IK255)

Development of a Real-time Turbidimeter-based LAMP Method for Detection of NPTⅡ Gene in the Genetically Modified Plant

Kuang Xiaoshan, Hu Songnan, Wang Xiaoyu, Tang Shiming, Cheng Xiaowei, Feng Jiawang   

  1. (The Inspection Technical Center of Zhuhai Entry-Exit Inspection and Quarantine Bureau,Zhuhai 519015)
  • Received:2014-01-08 Published:2014-03-29 Online:2014-03-31

摘要: 根据转基因植物常用的选择标记基因NPTⅡ(HE582394.1)的序列,设计6条特异性LAMP引物,利用实时浊度仪对反应体系中扩增产物的实时监控筛选出最佳引物,最终建立转基因植物NPTⅡ基因的LAMP检测方法,并对该方法的特异性、灵敏度、稳定性进行了评价。结果表明,该方法能够特异性检出含有NPTⅡ基因的植物及其加工产品,特异性高,灵敏度达0.5%。对转基因玉米MON863(含NPTⅡ基因)含量为10%、1%、0.5%、0%(W/W)的样品DNA分别进行扩增,其稳定性好,无假阳性和假阴性。所建立的LAMP方法适用于特异性筛选检测含NPTⅡ基因的植物及其加工样品。

关键词: 环节导等温扩增法(LAMP), 实时浊度仪, 新霉素-3&apos, -磷酸转移酶基因, 转基因, 检测

Abstract: According to NPTⅡ gene(HE582394.1), the common selective marker gene of genetically modified plant(GMP), six specific primers were designed. A loop-mediated isothermal amplification(LAMP)method for screening GMP was established. Real-time monitoring of the LAMP reaction was achieved by a turbidimeter. Specificity, sensitivity, stability and repeatability of this method were tested. The results showed that the method can specifically detect NPTⅡ gene, and the detection sensitivity of the method was 0.5%. With the genetically modified maize MON863(NPTⅡ positive)samples of 10%, 1%, 0.5%, 0%(W/W)as templates, stability and repeatability testing was conducted, and false negative rate was 0. The results showed that the LAMP method is suitable for specifically detecting NPTⅡ gene in GMP.

Key words: Loop-mediated isothermal amplification(LAMP),real-time turbidimeter, NPTII, Genetically modified organisms, Detection