ZHAO Qing,XIE Hong-bo,YANG La,et al.Molecular Identification of Bupleurum chinense Seeds Based on DNA Barcoding Technology[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(14):182-189.
ZHAO Qing,XIE Hong-bo,YANG La,et al.Molecular Identification of Bupleurum chinense Seeds Based on DNA Barcoding Technology[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(14):182-189. DOI: 10.13422/j.cnki.syfjx.20200650.
Molecular Identification of Bupleurum chinense Seeds Based on DNA Barcoding Technology
To establish a molecular identification method for
Bupleurum chinense
seeds based on ribosomal DNA internal transcribed spacer (ITS) sequence
ensuring the species authenticity of the cultivated seeds of
B. chinense
.
Method
2
A total of 59 seeds samples of
B. chinense
and its main cultivated species
marketed
B. chinense
were collected. The effect of different sampling amounts and different water bath conditions on DNA extraction quality of the seeds was investigated
a DNA extraction method for seeds of
Bupleurum
was established. Their ITS sequences were obtained by polymerase chain reaction (PCR) and bidirectional sequencing. In addition
34 ITS sequences of main cultivated
Bupleurum
species
such as
B. chinense
B. scorzonerifolium
B. falcatum
and
B. smithii
were downloaded from GenBank to enrich identification database of
B. chinense
seeds. The neighbor-joining (NJ) dendrogram were constructed by MEGA-X 10.0.5 software to investigate the the species identification ability of ITS sequences for
B. chinense
seeds. And DNA barcoding identification of marketed
B. chinense
seeds was conducted based on BLAST method and NJ dendrogram method.
Result
2
In total
59 ITS sequences were obtained. ITS sequences of
B. chinense
could be divided into six haplotypes
including seven variable sites. The NJ dendrogram indicated that all the haplotypes of
B. chinense
could form independent branches
which could be distinguished from other cultivated species of
Bupleurum
in the collected samples
and possessed the ability to identify species of
B. chinense
seeds. Based on ITS sequence barcoding identification
3 of the 19 marketed
B. chinense
seeds were
B. falcatum
with a counterfeit rate of 15.8%.
Conclusion
2
DNA barcoding technology based on ITS sequence can accurately and reliably identify
B. chinense
seeds and its adulterants
providing reference for the standardization construction of Chinese medicinal materials seeds.
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Related Author
XIAO Jiancai
YAN Binbin
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SUN Kai
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Related Institution
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