LUO Li,HU Li,JIANG Chao,et al.Specific PCR for Identification of Astragalus membranaceus var. mongholicus Seeds,A. membranaceus Seeds, andAdulterants[J].Chinese Journal of Experimental Traditional Medical Formulae,2024,30(04):21-28.
LUO Li,HU Li,JIANG Chao,et al.Specific PCR for Identification of Astragalus membranaceus var. mongholicus Seeds,A. membranaceus Seeds, andAdulterants[J].Chinese Journal of Experimental Traditional Medical Formulae,2024,30(04):21-28. DOI: 10.13422/j.cnki.syfjx.20231211.
Specific PCR for Identification of Astragalus membranaceus var. mongholicus Seeds, A. membranaceus Seeds, andAdulterants
To establish a method based on specific polymerase chain reaction (PCR) that can accurately and rapidly identify
Astragalus membranaceus
var.
mongholicus
(AMM) seeds and
A. membranaceus
(AM) seeds.
Method
2
The Chloroplast Genome Information Resource (CGIR) and IdenDSS were used to obtain the characteristic DNA fragments of AMM
and AM, and the specific single nucleotide polymorphism (SNP) sites of AMM and AM were screened out, on the basis of which the specific primers MG-F/MG-R of AMM and MJ-F/MJ-R of AM
were designed. The specific PCR method for identifying AMM and AM was established and optimized, and the specificity and applicability of the method were investigated.
Result
2
The specific PCR conditions for the identification of AMM were primers MG-F/MG-R, annealing at 62 ℃, and 28 cycles. After PCR amplification and gel electrophoresis, the specific band appeared at about 220 bp, with no band for the seeds of AM or adulterants. The specific PCR conditions for identifying the AM were primers MJ-F/MJ-R, annealing at 58 ℃, and 28 cycles. After PCR amplification and gel electrophoresis, the band appeared at about 150 bp, with no band of AMM or adulterants.
Conclusion
2
The specific PCR method established in this study can accurately and quickly identify the seeds of AMM and AM, which provides a basis for the classification and accurate identification of
HUA Z Y , JIANG C , SONG S H , et al . Accurate identification of taxon-specific molecular markers in plants based on DNA signature sequence [J]. Mol Ecol Resour , 2023 , 23 : 106 - 117 .