Molecular identification of Cynomorii herba using ITS2 DNA barcoding / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 4028-4032, 2013.
Article
in Chinese
| WPRIM
| ID: wpr-287646
ABSTRACT
<p><b>OBJECTIVE</b>To identify the Cynomorii Herba and its analogues species using DNA barcoding technique.</p><p><b>METHOD</b>Total genomic DNA extracted from all materials using the DNA extraction kit. The internal transcribed spacer 2 (ITS2) regions were amplified using polymerase chain reaction (PCR), and purified PCR products were sequenced bi-directionally. Sequence assembly and consensus sequence generation were performed using the CodonCode Aligner 3.7.1. The Kimura 2-Parameter (K2P) distances and GC content were computed using MEGA 5. 0. Species identification analyses were conducted through the species identification system for traditional Chinese medicine and neighbor-joining (NJ) trees.</p><p><b>RESULT</b>The ITS2 sequence lengths of Cynomorii Herba were 229 bp. The average intra-specific genetic distances of Cynomorii Herba were 0.003. The average inter-specific genetic distances between Cynomorii Herba and its adulterants species were 0.760. The results showed that the minimum inter-specific divergence is larger than the maximum intra-specific divergence. The species identification system for traditional Chinese medicine and NJ trees results indicated that Cynomorii Herba and its adulterants species can be easily identification.</p><p><b>CONCLUSION</b>The ITS2 region is an efficient barcode for identification of Cynomorii Herba, which provide a new technique to ensure clinical safety in utilization of traditional Chinese medicine.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Polymerase Chain Reaction
/
Classification
/
DNA, Plant
/
DNA, Intergenic
/
Cynomorium
/
DNA Barcoding, Taxonomic
/
Genetics
Language:
Chinese
Journal:
China Journal of Chinese Materia Medica
Year:
2013
Type:
Article
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