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[Authenticate of Atractylodes macrocephala seed by amplification refractory mutation system]
Liang Cao1, Chao Jiang, Hua-Sheng Peng
1National Resource Center for Chinese Materia Medica, China Academy of Chinese Medicinal Sciences, Beijing 100700, China.
Summary
This study developed a specific multi-PCR method to accurately identify Atractylodes macrocephala seeds. This molecular tool distinguishes authentic A. macrocephala from related species like A. lancea and A. chinensis.
Area of Science:
- Molecular biology
- Plant genetics
- Pharmacognosy
Context:
- Accurate identification of medicinal plants is crucial for quality control and therapeutic efficacy.
- Atractylodes macrocephala is a valuable traditional Chinese medicine, but its adulteration with similar species is common.
- Existing authentication methods may be time-consuming or lack specificity.
Purpose:
- To design and validate specific DNA primers for the molecular identification of Atractylodes macrocephala.
- To develop a multiplex PCR (multi-PCR) assay for distinguishing A. macrocephala from closely related species, Atractylodes lancea and Atractylodes chinensis.
- To optimize the PCR reaction conditions for reliable and efficient authentication.
Summary:
- Single nucleotide polymorphisms (SNPs) in the psbA-trnH gene sequences were identified using ClustalW and Bioedit software.
- Specific primers targeting these SNPs were designed for A. macrocephala, combined with universal ITS primers for a multi-PCR system.
- The optimized multi-PCR assay successfully amplified a unique 172 bp band specific to A. macrocephala.
Impact:
- Provides a rapid, specific, and reliable molecular method for authenticating Atractylodes macrocephala seeds.
- Aids in preventing adulteration and ensuring the quality and safety of herbal medicines derived from A. macrocephala.
- Facilitates accurate species identification in botanical research and the pharmaceutical industry.
