中药材品种复杂混乱给中药材流通监管造成不便,加强中药材及饮片质量监管、保证公众用药安全备受关注.本研究将二维DNA条形码技术应用于中药材流通监管领域,建立中药材二维DNA条形码流通监管体系.该体系包括DNA条形码序列获得与DNA条形...中药材品种复杂混乱给中药材流通监管造成不便,加强中药材及饮片质量监管、保证公众用药安全备受关注.本研究将二维DNA条形码技术应用于中药材流通监管领域,建立中药材二维DNA条形码流通监管体系.该体系包括DNA条形码序列获得与DNA条形码信息跨平台转换两大部分内容,以亚麻子、黑芝麻、火麻仁、蓖麻子和苘麻子5种药材共计109份样本为例研究建立该体系:依照中药材DNA条形码分子鉴定法获得待检样本DNA条形码序列;基于开源代码PHP QR Code的编码方式对实验所得DNA条形码序列进行编码,转换成二维码图片;使用移动终端扫描识读该二维码信息,并通过网页浏览器提交至中药材DNA条形码数据库获知鉴定结果.将二维码技术与DNA条形码技术相结合,为每个药材基原物种提供标准二维DNA条形码,有利于DNA条形码信息在不同平台间转换,为二维DNA条形码技术在实际流通监管工作中的应用提供理论基础,能有效实现对中药材流通的数字化监管,推动中药材流通监管现代化、国际化进程.展开更多
DNA barcoding is a rapidly developing frontier technology that is gaining worldwide attention.Here,seven regions (psbA-trnH,matK,ycf5,rpoC1,rbcL,ITS2,and ITS) with potential for use as DNA barcodes were tested for the...DNA barcoding is a rapidly developing frontier technology that is gaining worldwide attention.Here,seven regions (psbA-trnH,matK,ycf5,rpoC1,rbcL,ITS2,and ITS) with potential for use as DNA barcodes were tested for their ability to identify 300 samples of 192 species from 72 genera of the family Rutaceae.To evaluate each barcode’s utility for species authentication,PCR amplification efficiency,genetic divergence,and barcoding gaps were assessed.We found that the ITS2 region exhibited the highest inter-specific divergence,and that this was significantly higher than the intra-specific variation in the "DNA barcoding gap" assessment and Wilcoxon two-sample tests.The ITS2 locus had the highest identification efficiency among all tested regions.In a previous study,we found that ITS2 was able to discriminate a wide range of plant taxa,and here we confirmed that ITS2 was also able to discriminate a number of closely related species.Therefore,we propose that ITS2 is a promising candidate barcode for plant species identification.展开更多
文摘中药材品种复杂混乱给中药材流通监管造成不便,加强中药材及饮片质量监管、保证公众用药安全备受关注.本研究将二维DNA条形码技术应用于中药材流通监管领域,建立中药材二维DNA条形码流通监管体系.该体系包括DNA条形码序列获得与DNA条形码信息跨平台转换两大部分内容,以亚麻子、黑芝麻、火麻仁、蓖麻子和苘麻子5种药材共计109份样本为例研究建立该体系:依照中药材DNA条形码分子鉴定法获得待检样本DNA条形码序列;基于开源代码PHP QR Code的编码方式对实验所得DNA条形码序列进行编码,转换成二维码图片;使用移动终端扫描识读该二维码信息,并通过网页浏览器提交至中药材DNA条形码数据库获知鉴定结果.将二维码技术与DNA条形码技术相结合,为每个药材基原物种提供标准二维DNA条形码,有利于DNA条形码信息在不同平台间转换,为二维DNA条形码技术在实际流通监管工作中的应用提供理论基础,能有效实现对中药材流通的数字化监管,推动中药材流通监管现代化、国际化进程.
基金supported by the National International Cooperation Program (Grant No. 2007DFA30990)Special Scientific Research Project of Health Profession (Grant No. 200802043)
文摘DNA barcoding is a rapidly developing frontier technology that is gaining worldwide attention.Here,seven regions (psbA-trnH,matK,ycf5,rpoC1,rbcL,ITS2,and ITS) with potential for use as DNA barcodes were tested for their ability to identify 300 samples of 192 species from 72 genera of the family Rutaceae.To evaluate each barcode’s utility for species authentication,PCR amplification efficiency,genetic divergence,and barcoding gaps were assessed.We found that the ITS2 region exhibited the highest inter-specific divergence,and that this was significantly higher than the intra-specific variation in the "DNA barcoding gap" assessment and Wilcoxon two-sample tests.The ITS2 locus had the highest identification efficiency among all tested regions.In a previous study,we found that ITS2 was able to discriminate a wide range of plant taxa,and here we confirmed that ITS2 was also able to discriminate a number of closely related species.Therefore,we propose that ITS2 is a promising candidate barcode for plant species identification.
