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[1]李美妮,韩蕊莲,韩建萍,等.大黄与易混伪品土大黄、虎杖原植物的ITS2序列鉴定[J].环球中医药,2012,5(03):185-0.
 LI Mei ni,HAN Rui lian,HAN Jian ping,et al.Identification of original plants of Radix et Rhizoma Rhei from its adulterants Rhizoma et Radix Polygoni Cuspidati and Radix Rumicis Obtusifolii by ITS2 sequences[J].,2012,5(03):185-0.
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大黄与易混伪品土大黄、虎杖原植物的ITS2序列鉴定()
     
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《环球中医药》[ISSN:1006-6977/CN:61-1281/TN]

卷:
第5卷
期数:
2012年03期
页码:
185-0
栏目:
论著
出版日期:
2012-03-06

文章信息/Info

Title:
Identification of original plants of Radix et Rhizoma Rhei from its adulterants Rhizoma et Radix Polygoni Cuspidati and Radix Rumicis Obtusifolii by ITS2 sequences
作者:
李美妮; 韩蕊莲; 韩建萍; 姚辉; 罗焜; 宋经元;
Author(s):
LI Meini HAN Ruilian HAN Jianpinget al.
College of Life Science, Northwest Science and Technology University of Agriculture and Forestry, Shaanxi 712100, China
关键词:
大黄 混伪品 鉴定 ITS2序列
Keywords:
Radix et Rhizoma Rhei AdulterantsIdentificationITS2 sequence
分类号:
R282.5
DOI:
-
文献标志码:
A
摘要:
目的分析大黄与其易混伪品原植物的rDNA上的ITS2序列信息,探索鉴定大黄及其混伪品的新方法。方法提取DNA模板后对其ITS2区进行PCR扩增、测序; 拼接序列; 计算种内种间K2P距离,最后基于K2P距离建立NJ树。结果大黄与其混伪品的最小种间K2P距离(38.6%)大于最大种内K2P距离(8.0%),NJ树中大黄三个基原的不同来源样品聚为一支。结论因此ITS2序列可以作为鉴定大黄与易混伪品土大黄、虎杖的候选条形码序列,DNA条形码技术在中药鉴定中具有极大的前景。
Abstract:
ObjectiveThe ITS2 sequence of rDNA was utilized as a novel technique to discriminate three original plants of Radix et Rhizoma Rhei from its adulterants.MethodsDNA was extracted from each sample as template, of which the ITS2 region was amplified in a PCR and then sequenced. Sequences were assembled. Interand intraspecific K2P distances were calculated, based on which NJ tree was performed.ResultsThe K2P distance of the minimum interspecific 38.6% was higher than that of the maximum intraspecific 8.0%. The different samples of three original plants of Radix et Rhizoma Rhei were clustered into one clade.Conclusion The ITS2 fragment could be used as a candidate barcode for identifying original plants of Radix et Rhizoma Rhei from its adulterants Rhizoma et Radix Polygoni Cuspidati and Radix Rumicis Obtusifolii, and DNA barcoding has a wide prospect in authenticating Traditional Chinese Medicine.

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备注/Memo

备注/Memo:
基金课题:国家自然科学基金(81001608)
作者单位:712100 陕西杨凌,西北农林科技大学生命科学学院[李美妮(硕士研究生)、韩蕊莲];中国医学科学院 北京协和医学院药用植物研究所中草药物质基础与资源利用教育部重点实验室[韩建萍、姚辉、罗焜、宋经元、李美妮(硕士研究生)]
作者简介:李美妮(1986- ),女,2009级在读硕士研究生。研究方向:植物学。Email:limeini5242@163.com
通讯作者:韩蕊莲(1962- ), 女, 硕士生导师。  研究方向: 植物生态与植物资源利用研究。 Email:ruilianxiao@yahoo.com.cn; 韩建萍(1977- ),女,副研究员,硕士生导师。研究方向:中药资源学研究。Email:jphan@implad.ac.cn。韩蕊莲、韩建萍并列本文通讯作者。
更新日期/Last Update: 1900-01-01