生物技术通报 ›› 2015, Vol. 31 ›› Issue (7): 64-68.doi: 10.13560/j.cnki.biotech.bull.1985.2015.07.010

• 技术与方法 • 上一篇    下一篇

多重PCR技术快速检测烤后烟叶转基因成分

余婧1,2, 郭玉双1, 林世锋1, 余世洲1, 赵杰宏1   

  1. (1.贵州省烟草科学研究院 烟草行业烟草分子遗传重点实验室,贵阳 550081;2.贵州烟叶复烤有限责任公司铜仁复烤厂,铜仁 554300)
  • 收稿日期:2014-10-30 出版日期:2015-07-16 发布日期:2015-07-16
  • 作者简介:余婧,女,硕士,农艺师,研究方向:烟草转基因检测及烟草生物技术;E-mail:yujingbio@126.com
  • 基金资助:
    贵州省科技支撑计划农业攻关[黔科合NY(2013)3020号]

A Multiplex PCR for Rapid Detection of Genetically Modified Ingredient in Flue-cured Tobacco

Yu Jing1,2, Guo Yushuang1, Lin Shifeng1, Yu Shizhou1, Zhao Jiehong1   

  1. (1. Tobacco Molecular Genetics Key Laboratory of China Tobacco,Guizhou Academy of Tobacco Science of CNTC,Guiyang 550081;2. Tongren Factory of Guizhou Tobacco Leaf Redrying Co.,Ltd,Tongren 554300)
  • Received:2014-10-30 Published:2015-07-16 Online:2015-07-16

摘要: 为提高烟叶转基因成分检测效率,建立了烤后烟叶中3种外源基因成分的多重PCR检测技术体系,通过优化该反应体系中的Mg2+、dNTP、rTaq酶、引物浓度及退火温度等参数,实验最适条件为将4对相等摩尔浓度引物预先按1:1:1:1(V/V)混合,在Mg2+为1.5 mmol/L、dNTP为125 μmol/L、rTaq酶 1 U、混合引物1 μmol/L,DNA 100 ng,退火温度65℃,循环数35个的反应条件下,在一次PCR反应中便可同时检测烟草内源基因NR,外源基因35S启动子、NOS终止子、NPT II筛选标记基因。优化后的反应体系能够有效地检测出转基因烤后烟叶百分比含量为0.9%(V/V)的转基因成分。

关键词: 多重PCR, 烤后烟叶, 转基因成分

Abstract: In order to improve the efficiency of detecting genetically modified ingredient(GMI), we established a multiplex PCR detecting 3 exogenous gene ingredients in flue-cured tobacco. By optimizing the concentrations of Mg2+, dNTP, rTaq, and primer as well as annealing temperature in the multiplex PCR system, the result showed that the optimal conditions for the experiment were:4 pairs of primers pre-mixed in ratio of 1∶1∶1∶1(V/V), Mg2+ 1. 5 mmol/L, dNTP 125 μmol/L, rTaq polymerase 1 U, mixed primers 1 μmol/L, DNA 100 ng annealing temperature 65℃, and 35 reaction cycles;under the above conditions, the system detected 1 tobacco endogenous gene NR, exogenous gene 35S promoter, NOS terminator and selectable marker NPT II gene by 1 PCR reaction. In this study, the optimized multiplex PCR could efficiently detect the GMI of 0.9%(V/V)in transgenic flue-cured tobacco.

Key words: multiplex PCR, flue-cured tobacco, GMO ingredient