LIU Yanan,HUA Zhongyi,ZHAO Yuyang,et al.Specific PCR Identification of Hibisci Cortexand Its Adulterants Based on DNA Signature Sequence Tags[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(17):133-139.
LIU Yanan,HUA Zhongyi,ZHAO Yuyang,et al.Specific PCR Identification of Hibisci Cortexand Its Adulterants Based on DNA Signature Sequence Tags[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(17):133-139. DOI: 10.13422/j.cnki.syfjx.20221013.
Specific PCR Identification of Hibisci Cortexand Its Adulterants Based on DNA Signature Sequence Tags
Uncommon medicinal herbs are valuable medicinal resources, but their identification is a difficult problem in Chinese medicine due to their particularity and complexity. It is, therefore, urgent to establish a method for the identification of uncommon medicinal herbs. In this study, DNA signature sequence (DSS) tags were used to establish a specific polymerase chain reaction (PCR) identification method for Hibisci Cortex
,
the origin plant of Hibisci Cortex, and its adulterants.
Method
2
The candidate DSS tags were obtained from the chloroplast genome sequence analysis, and the DSS tags were verified by DNA sequencing. The specific identification primers for
H. syriacus
were designed based on the obtained reliable DSS tags. The PCR reaction conditions were optimized, and the tolerance and feasibility were investigated.
Result
2
A DSS tag for identification of
H. syriacus
was obtained from the comparison of sequencing results of the amplified products with DSS, which revealed the distinguishing characteristics of Hibisci Cortex and its adulterants. A pair of specific primers for
H. syriacus
was designed according to the DSS tag. After PCR amplification and gel electrophoresis with the primers, a single bright band of about 270 bp was observed from
H. syriacus
, which did not appear in the four adulterants.
Conclusion
2
A DSS tag obtained in this study can be used to identify
H.
syriacus
. The specific primers designed based on this DSS tag can accurately and simply identify the original plant of Hibisci Cortex and its adulterants, which provides a new method and idea for the molecular identification of genuine and counterfeit products of Hibisci Cortex.
Database Resources of the National Genomics Data Center . China national center for bioinformation in 2021 [J]. Nucleic Acids Res , 2021 , 49 ( D1 ): D18 - D28 .