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中国农学通报 ›› 2022, Vol. 38 ›› Issue (19): 59-65.doi: 10.11924/j.issn.1000-6850.casb2021-0727

所属专题: 生物技术 园艺

• 林学·园艺·园林 • 上一篇    下一篇

道地中药材川贝母特异性PCR鉴别方法研究

张富丽1(), 张义蓉1, 兰青阔2, 杨晓凤1, 刘炜1, 付绍兵3, 刘茜1, 陈敏1, 尹全1()   

  1. 1四川省农业科学院农业质量标准与检测技术研究所,成都 610066
    2天津市农业科学院种质资源与生物技术研究所,天津 300381
    3青海绿康生物开发有限公司,青海海东 810500
  • 收稿日期:2021-07-29 修回日期:2022-02-10 出版日期:2022-07-05 发布日期:2022-07-13
  • 通讯作者: 尹全
  • 作者简介:张富丽,女,1978年出生,四川大竹人,副研究员,博士,研究方向:农产品质量安全控制与评价技术。通信地址:610066 四川省成都市锦江区静居寺路20号附102号,Tel:028-84504139,E-mail: zhang_fannie@163.com
  • 基金资助:
    四川省创新能力提升工程公益深化项目“几种名贵中药材真实性鉴定分子检测技术的建立”(2016GYSH-032);成都市科技局重点研发计划“川贝母真伪及掺假量化判定技术研究”(2019-YF05-02257-SN)

A Specific PCR Method for Identifying the Authentic Medicinal Material Bulbus Fritillariae cirrhosae

ZHANG Fuli1(), ZHANG Yirong1, LAN Qingkuo2, YANG Xiaofeng1, LIU Wei1, FU Shaobing3, LIU Qian1, CHEN Min1, YIN Quan1()   

  1. 1Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu 610066
    2Institute of Germplasm Resources and Biotechnology, Tianjin Academy of Agricultural Sciences, Tianjin 300381
    3Qinghai Lvkang Biological Development Co., Ltd., Haidong, Qinghai 810500
  • Received:2021-07-29 Revised:2022-02-10 Online:2022-07-05 Published:2022-07-13
  • Contact: YIN Quan

摘要:

为建立快速检测中药材川贝母成分的特异性PCR法,从NCBI数据库下载植物HMGR基因序列,根据同源性区域设计兼并引物,对川贝母及其易混品鳞茎基因组进行扩增。通过比对川贝母特异性DNA片段区域,设计引物扩增获得川贝母基原物种特异核酸片段。从川贝母基原鳞茎中提取DNA,设计特异引物对BMH-TF/BMH-TR,优化PCR扩增条件,通过特异性、灵敏度实验验证,建立特异性PCR检测体系。采用该方法从川贝母基原中扩增出一条120 bp左右条带,而非川贝母样品、空白对照在相同条件下无扩增条带,检测灵敏度为2 ng/μL,检测下限为4 ng。对10个市售药材的检测结果证明,该方法简便可行、重现性好。该PCR法可快速、准确鉴别川贝母基原,具有操作简便、快速、特异性高的优点。

关键词: 川贝母, 多基源, 特异性, 聚合酶链式反应, 分子鉴定

Abstract:

To establish a specific PCR method for rapid detection of plant origin components of bulbus Fritillariae cirrhosae, the HMGR gene sequence was downloaded from the NCBI database and compared. Degenerate primers were designed according to the homologous DNA fragments, and the genome from bulbus F. cirrhosae and other easily confused species were analyzed. Then specific primers were designed for longer specific nucleic acid fragment from bulbus F. cirrhosae. The total DNA was extracted from dry bulbs of bulbus F. cirrhosae. The specific primers BMH-TF/BMH-TR were designed and the PCR amplification conditions were optimized. Then the specificity and sensitivity were tested, and the PCR detection system specific for bulbus F. cirrhosae was successfully established. The PCR products were able to amplify a single band of 120 bp by agarose gel electrophoresis, and no amplification band was found in other samples and the blank under the same conditions. The sensitivity of this primer was 2 ng/μL, the lower limit of detection was 4 ng. The test results of 10 kinds of commercially available medicinal herbs proved that this method was simple, accurate and reliable with good reproducibility. This PCR method can identify bulbus F. cirrhosae rapidly, and has the advantages of rapidness and high specificity.

Key words: bulbus Fritillariae cirrhosae, multi-species origin, specificity, PCR, molecular identification

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