基于ITS2序列的竹叶花椒及其近缘种药材鉴别
投稿时间:2020-05-20     点此下载全文
引用本文:齐景梁,高必兴,苟琰,耿昭,卿艳,周娟,姜卫东.基于ITS2序列的竹叶花椒及其近缘种药材鉴别[J].中国现代中药,2021,23(5):786-791
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作者中文名作者英文名单位中文名单位英文名E-Mail
齐景梁 QI Jing-liang 四川省药品检验研究院/国家药品监督管理局 中成药质量评价重点实验室,四川成都611731 Sichuan Institute for Drug Control, Key Laboratory of Quality Evaluation of Chinese Patent Medicines, NMPA, Chengdu 611731, China  
高必兴 GAO Bi-xing 四川省药品检验研究院/国家药品监督管理局 中成药质量评价重点实验室,四川成都611731 Sichuan Institute for Drug Control, Key Laboratory of Quality Evaluation of Chinese Patent Medicines, NMPA, Chengdu 611731, China  
苟琰 GOU Yan 四川省药品检验研究院/国家药品监督管理局 中成药质量评价重点实验室,四川成都611731 Sichuan Institute for Drug Control, Key Laboratory of Quality Evaluation of Chinese Patent Medicines, NMPA, Chengdu 611731, China  
耿昭 GENG Zhao 四川省药品检验研究院/国家药品监督管理局 中成药质量评价重点实验室,四川成都611731 Sichuan Institute for Drug Control, Key Laboratory of Quality Evaluation of Chinese Patent Medicines, NMPA, Chengdu 611731, China  
卿艳 QING Yan 四川省药品检验研究院/国家药品监督管理局 中成药质量评价重点实验室,四川成都611731 Sichuan Institute for Drug Control, Key Laboratory of Quality Evaluation of Chinese Patent Medicines, NMPA, Chengdu 611731, China  
周娟 ZHOU Juan 四川省药品检验研究院/国家药品监督管理局 中成药质量评价重点实验室,四川成都611731 Sichuan Institute for Drug Control, Key Laboratory of Quality Evaluation of Chinese Patent Medicines, NMPA, Chengdu 611731, China  
姜卫东 JIANG Wei-dong 四川省药品检验研究院/国家药品监督管理局 中成药质量评价重点实验室,四川成都611731 Sichuan Institute for Drug Control, Key Laboratory of Quality Evaluation of Chinese Patent Medicines, NMPA, Chengdu 611731, China 姜卫东,主任药师,研究方向:中药质量控制与评价;Tel:(028)87877181,E-mail:JWD-322@163.com 
基金项目:四川省中医药管理局科学技术研究专项(2018YY002)
中文摘要:目的:通过分析竹叶花椒及其近缘种药材的核糖体DNA内转录间隔区2(ITS2)条形码序列,探讨DNA条形码技术鉴别竹叶花椒及其近缘种药材的可行性。方法:对样品进行DNA提取、扩增、测序,并从GenBank数据库下载ITS2序列,共获得竹叶花椒及其近缘种药材ITS2序列43条,基于Basic Local Alignment Search Tool(BLAST)法、临接法(NJ)、Kimura 2-parameter(K2P)遗传距离和ITS2序列二级结构进行鉴定分析。结果:BLAST结果与性状鉴定结果一致;竹叶花椒种内平均K2P遗传距离小于其与花椒、青花椒、野花椒的种间平均K2P遗传距离;NJ系统聚类树和ITS2二级结构可直观地区分竹叶花椒及其近缘种。结论:应用ITS2条形码可以有效地鉴别竹叶花椒及其近缘种药材。
中文关键词:竹叶花椒  内转录间隔区2  DNA条形码  中药鉴定
 
Identification of Zanthoxylum armatum and Its Closely Related Species Based on ITS2 Sequence
Abstract:Objective:To explore the feasibility of using DNA barcoding technology to identify Zanthoxylum armatum and its closely related species, the internal transcribed spacer 2(ITS2)barcoding sequences were analyzed. Methods:By DNA extraction, amplification and sequencing of experimental samples, and downloading the ITS2 sequences from GenBank, a total of 43 ITS2 sequences of Z.armatum and its closely related species were obtained. Identification was conducted based on BLAST method, Neighbor-Joining(NJ) phylogenetic tree method, Kimura 2-parameter(K2P) genetic distance method, and secondary structure of ITS2 sequence. Results:The results of BLAST were consistent with those of morphological identification. The average intraspecific K2P genetic distance of Z. armatum was smaller than the average interspecific K2P genetic distance between it and Z.bungeanum, and Z.schinifolium, and Z.simulans. Both NJ phylogenetic tree and ITS2 secondary structure can distinguish Z.armatum and its closely related species intuitively. Conclusion:The ITS2 barcoding method can be used to identify Z.armatum and its closely related species.
keywords:Zanthoxylum armatum DC.  ITS2  DNA barcoding  authentication of Chinese medicine
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