食品科学

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银耳干品的DNA提取及随机扩增多态性分析

王凡华1,马务迢2,谭庆云1,刘伟贤2,孙 恬2,杜 冰3,杨公明3,易继财1,*   

  1. (1.华南农业大学生命科学学院,广东省普通高等学校植物功能基因组与生物技术重点实验室,广东 广州 510642;
    2.无限极(中国)有限公司,广东 江门 529156;3.华南农业大学食品学院,广东 广州 510642
  • 出版日期:2015-02-25 发布日期:2015-02-16
  • 通讯作者: 易继财
  • 基金资助:

    无限极(中国)有限公司项目(HPG/2013/05/0604)

DNA Extraction for RAPD Analysis of Dried Tremella fuciformis

WANG Fanhua1, MA Wutiao2, TAN Qingyun1, LIU Weixian2, SUN Tian2, DU Bing3, YANG Gongming3, YI Jicai1,*   

  1. 1. Key Laboratory of Plant Functional Genomics and Biotechnology of Guangdong Provincial Higher Education Insititutions,
    College of Life Sciences, South China Agricultural University, Guangzhou 510642, China; 2. Infinitus (China) Co. Ltd.,
    Jiangmen 529156, China; 3. College of Food Science, South China Agricultural University, Guangzhou 510642, China
  • Online:2015-02-25 Published:2015-02-16
  • Contact: YI Jicai

摘要:

银耳子实体中因含有大量的多糖和蛋白质,严重干扰其基因组DNA的提取。本实验建立一种银耳干品(子实体)中DNA的提取方法,利用此法可直接以银耳干品为材料提取DNA,不需芽孢分离和菌丝培养步骤,而且DNA产量高、质量好,可用于随机扩增多态性(random amplified polymorphic,RAPD)DNA分析。RAPD分析的结果显示,本实验所选取的银耳样品间存在DNA多态性。研究结果将有助于当前食品分析检测中直接以银耳干品为材料进行DNA提取及品种鉴别等分析工作。

关键词: 银耳干品, DNA提取, 随机扩增多态性DNA, 品种鉴别

Abstract:

It is difficult to extract genomic DNA from Tremella fuciformis due to the disturbance of abundant
polysaccharides and proteins. In this paper, a method is reported to directly extract DNA from dried Tremella fuciformis
without spore separation or mycelium culture procedures which enables one to achieve high-quality DNA in a high yield for
RAPD (random amplified polymorphic DNA) analysis. The RAPD results indicated the presence of DNA polymorphisms
in the tested samples. The results of this study will contribute to DNA extraction and variety identification of dried Tremella
fuciformis in food analysis and detection.

Key words: dried Tremella fuciformis, DNA extraction, random amplified polymorphic (RAPD) DNA, variety identification

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