Journal of Ginseng Research

The Korean Society of Ginseng (고려인삼학회)
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Molecular differentiation of Russian wild ginseng using mitochondrial nad7 intron 3 region

  • Li, Guisheng (School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Ministry of Education), Yantai University) ;
  • Cui, Yan (School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Ministry of Education), Yantai University) ;
  • Wang, Hongtao (School of Life Sciences, Yantai University) ;
  • Kwon, Woo-Saeng (Korean Ginseng Center for Most Valuable Products and Ginseng Genetic Resource Bank, Kyung Hee University) ;
  • Yang, Deok-Chun (Korean Ginseng Center for Most Valuable Products and Ginseng Genetic Resource Bank, Kyung Hee University)
  • Received : 2016.03.08
  • Accepted : 2016.06.21
  • Published : 2017.07.15
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Abstract

Background: Cultivated ginseng is often introduced as a substitute and adulterant of Russian wild ginseng due to its lower cost or misidentification caused by similarity in appearance with wild ginseng. The aim of this study is to develop a simple and reliable method to differentiate Russian wild ginseng from cultivated ginseng. Methods: The mitochondrial NADH dehydrogenase subunit 7 (nad7) intron 3 regions of Russian wild ginseng and Chinese cultivated ginseng were analyzed. Based on the multiple sequence alignment result, a specific primer for Russian wild ginseng was designed by introducing additional mismatch and allele-specific polymerase chain reaction (PCR) was performed for identification of wild ginseng. Real-time allele-specific PCR with endpoint analysis was used for validation of the developed Russian wild ginseng single nucleotide polymorphism (SNP) marker. Results: An SNP site specific to Russian wild ginseng was exploited by multiple alignments of mitochondrial nad7 intron 3 regions of different ginseng samples. With the SNP-based specific primer, Russian wild ginseng was successfully discriminated from Chinese and Korean cultivated ginseng samples by allele-specific PCR. The reliability and specificity of the SNP marker was validated by checking 20 individuals of Russian wild ginseng samples with real-time allele-specific PCR assay. Conclusion: An effective DNA method for molecular discrimination of Russian wild ginseng from Chinese and Korean cultivated ginseng was developed. The established real-time allele-specific PCR was simple and reliable, and the present method should be a crucial complement of chemical analysis for authentication of Russian wild ginseng.

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References

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