食品科学 ›› 2009, Vol. 30 ›› Issue (24): 355-358.doi: 10.7506/spkx1002-6630-200924079

• 分析检测 • 上一篇    下一篇

大豆DNA提取方法及降落PCR检测转基因成分的研究

陈 彦1,2,潘 见1,*,王 亚2,惠爱玲1,杨 毅1   

  1. 1.合肥工业大学 农产品生物化工教育部工程研究中心 2.安徽大学生命科学学院
  • 收稿日期:2008-12-26 出版日期:2009-12-15 发布日期:2010-12-29
  • 通讯作者: 潘 见1,*, E-mail:panxie163@163.com
  • 基金资助:

    农产品生物化工教育部重点实验室(合肥工业大学)开放基金项目(NKF2004004);
    安徽省自然科学基金项目(070413143)

DNA Extraction from Soybeans and Detection of Genetically-Modified Components by Touchdown PCR

CHEN Yan1,2,PAN Jian1,*,WANG Ya2,HUI Ai-ling1,YANG Yi1   

  1. (1. Engineering Research Center of Bio-Process, Ministry of Education, Hefei University of Technology, Hefei 230009, China;
    2. School of Life Science, Anhui University, Hefei 230039, China)
  • Received:2008-12-26 Online:2009-12-15 Published:2010-12-29
  • Contact: PAN Jian1,*, E-mail:panxie163@163.com

摘要:

采用改良的CTAB 法,植物基因组DNA 小量制备试剂盒,SDS 法和高盐低pH 值法4 种方法提取安徽市场上8 种大豆种子的基因组DNA,首次用降落PCR(TD-PCR)检测转基因成分,并对阳性产物进行酶切验证。结果表明改良的CTAB 法是一种简单、高效的大豆DNA 提取方法,能够满足各种分子生物学分析;TD-PCR 显著提高了PCR 扩增的特异性和效率,可有效检测大豆转基因成分,具有良好的应用前景。

关键词: 大豆, 转基因成分, 改良的CTAB 法, 降落PCR

Abstract:

The DNA geneome were extracted from 8 species of soybeans sold in commercial markets of Anhui province by Improved CTAB method, high salt and low pH method, plant genomic DNA mini-prep kit and SDS method. Touchdown polymerase chain reaction (TD-PCR) was applied to detect the genetically modified components in soybeans for the first time. The positive amplification productions were also analyzed by endonuclease. The experiment results showed that the improved CTAB method was suitable for all kinds of molecular analysis due to its simplicity and high efficiency. The TD-PCR was able to significantly improve the specificity and efficiency of PCR products. It would provide a new method for detection of genetically modified components.

Key words: soybean, genetically modified component, improved CTAB method, TD-PCR

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