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 Repjournal_title
Scientific reportsauthors
Shi Y,Zhao M,Yao H,Yang P,Xin T,Li B,Sun W,Chen Sdoi
10.1038/srep40000subject
Has Abstractpub_date
2017-01-06 00:00:00pages
40000issn
2045-2322pii
srep40000journal_volume
7pub_type
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