[Rapid PCR authentication Lonicera japanica]

Area of Science:

• Botany
• Molecular Biology
• Pharmacognosy

Background:

• Accurate authentication of medicinal plants like Japanese honeysuckle (Lonicera japonica) is crucial for quality control and safety.
• Traditional authentication methods can be time-consuming and may not reliably distinguish between genuine species and adulterants.
• Genetic variations, such as single nucleotide polymorphisms (SNPs), offer potential targets for rapid molecular identification.

Purpose of the Study:

• To develop a simple and rapid method for authenticating Japanese honeysuckle (Lonicera japonica).
• To differentiate Lonicera japonica from its common adulterants using molecular techniques.

Main Methods:

• Design of a rapid, allele-specific PCR primer based on a trnL-trnF 625 G/T single nucleotide polymorphism (SNP).
• Optimization of the PCR reaction system, including annealing temperature.
• Detection of PCR products using SYBR Green I fluorescence under UV light.

Main Results:

• The optimized PCR method successfully authenticated Lonicera japonica.
• The method effectively distinguished Lonicera japonica from nine adulterant species.
• Authentic Lonicera japonica samples produced strong green fluorescence, while adulterants did not.

Conclusions:

• Rapid, allele-specific PCR is a simple and effective tool for authenticating Japanese honeysuckle.
• This molecular approach provides a reliable method for quality control in herbal products.
• The fluorescence-based detection offers a clear visual indicator for species identification.