食品科学 ›› 2010, Vol. 31 ›› Issue (9): 182-186.doi: 10.7506/spkx1002-6630-201009041

• 生物工程 • 上一篇    下一篇

基于rDNA ITS序列分析的桑黄真菌分子鉴定

谢丽源1 , 2,张 勇3 ,* ,邓科君3,彭卫红1,甘炳成1,李洪军2   

  1. 1.四川省农业科学研究院土壤肥料研究所 2.西南大学食品科学学院 3.电子科技大学生命科学与技术学院
  • 收稿日期:2009-08-17 出版日期:2010-05-01 发布日期:2010-12-29
  • 通讯作者: 张勇 E-mail:zhangyong916@126.com
  • 基金资助:

    四川省青年基金项目(2008ZQ026-072);四川省科技支撑项目(2008FZ0157)

Molecular Identification of Medicinal Fungus Sanghuang based on rDNA ITS Sequence Analysis

XIE Li-yuan1,2,ZHANG Yong3,*,DENG Ke-jun3,PENG Wei-hong1,GAN Bing-cheng1,LI Hong-jun2   

  1. 1. Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China;2. College of Food
    Science, Southwest University, Chongqing 400716, China;3. School of Life Science and Technology, University of Electronic
    Science and Technology of China, Chengdu 610054, China
  • Received:2009-08-17 Online:2010-05-01 Published:2010-12-29
  • Contact: ZHANG Yong E-mail:zhangyong916@126.com

摘要:

对6 份桑黄真菌菌株的rDNA ITS 区段进行克隆测序和序列特征比较分析,并与GenBank 中获得的桑黄基源物种相关序列进行同源性比对,进一步将从GenBank 检索获得的桑黄基源物种的ITS 序列、复合外组ITS 序列连同6 份桑黄菌ITS 序列一起作系统发育分析。结果表明:Sh-03、04、05、06 与Phellinus linteus 亲缘关系最近,Sh-01 与Phellinus baumii 亲缘关系最近,Sh-02 与Phellinus baumii、Phellinus linteus、Phellinus igniarius 的亲缘关系相差甚远,为一错误菌种。本实验的研究结果可以提供一种准确可靠且简单易行的桑黄真菌分子鉴定技术。

关键词: 桑黄, Phellinus baumii, Phellinus linteus, Phellinus igniarius, rDNA ITS, 分子鉴定

Abstract:

In this study, the ribosomal DNA internal transcribed spacer (rDNA ITS) region of six species of Sanghuang was cloned and sequenced, and the characteristics of ITS sequences were compared and analyzed. The ITS sequences exhibited homology through BLAST analysis of GenBank database and a phylogentic tree was constructed. Results demonstrated that phylogenetic relationship of Sh-03, 04, 05 and 06 was close to Phellinus linteus, and phylogenetic relationship of Sh-01 was close to Phellinus baumii; but Sh-02 had distant phylogenetic relationship with Phellinus baumii, Phellinus linteus and Phellinus igniarius. Therefore, the characteristics of rDNA ITS sequences can be used as an accurate, reliable and straightforward method to identify the original species of Sanghuang and explore genetic diversity.

Key words: Sanghuang, Phellinus baumii, Phellinus linteus, Phellinus igniarius, ribosomal DNA internal transcribed spacer, molecular identification

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