Rapidly discriminate commercial medicinal Pulsatilla chinensis (Bge.) Regel from its adulterants using ITS2 barcoding and specific PCR-RFLP assay.

Abstract:

:Pulsatillae radix is a conventional traditional Chinese medicine (TCM) with common name Baitouweng, and has notable effects on inflammation and dysentery. Pulsatilla chinensis (Bge.) Regel is the only source plant of Baitouweng recorded in Chinese Pharmacopoeia, but its adulteration often occurs in the market that possibly affects medicinal efficacy and safety. We have established an internal transcribed spacer 2 (ITS2) barcode library based on 105 plant samples from 12 Pulsatilla species and 10 common adulterants. Results indicate that ITS2 barcoding can accurately distinguish Pulsatilla species from their adulterants. Pulsatilla chinensis can be discriminated from 11 congeneric species by two stable single nucleotide polymorphisms (SNPs) in the ITS2 region. Additionally, a quick specific PCR-RFLP identification assay based on the ITS2 barcode was developed. Using specific primers ITS2/PR1 combined with restriction enzyme Bgl I, Pu. chinensis can rapidly be differentiated from other species via simple and low-cost test procedures. Furthermore, 30 commercial Baitouweng products were tested and only two products were derived from authentic Pu. chinensis. Thus, these two molecular approaches provide practical tools for quick identification of commercial Baitouweng products and can help ensure the safe use of this TCM product.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Shi Y,Zhao M,Yao H,Yang P,Xin T,Li B,Sun W,Chen S

doi

10.1038/srep40000

subject

Has Abstract

pub_date

2017-01-06 00:00:00

pages

40000

issn

2045-2322

pii

srep40000

journal_volume

7

pub_type

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