[Multiplex polymerase chain reaction for genetically modified potato event AV43-6-G7 quantification. Proof of...

Area of Science:

• Agricultural Biotechnology
• Molecular Biology
• Food Science

Background:

• Improving laboratory control for genetically modified organisms (GMOs) is crucial for regulatory compliance and food safety.
• Multiplexing strategies in real-time polymerase chain reaction (PCR-RT) enhance efficiency by increasing target detection and sample throughput.
• Genetically engineered (GE) crops require precise identification methodologies to ensure accurate labeling and traceability.

Purpose of the Study:

• To develop a quantitative identification protocol for genetically engineered potato event AV43-6-G7.
• To implement a duplex PCR-RT assay utilizing TaqMan® PCR technology for precise detection.
• To establish a reliable method for quantifying the presence of GE potato event AV43-6-G7 in food matrices.

Main Methods:

• Development of a duplex PCR-RT system employing specific DNA primers and fluorescence-labeled probes.
• Optimization of PCR parameters, including primer/probe concentrations, Mg2+ ion levels, and annealing temperatures.
• Empirical selection of reaction mixture components and temperature-time profiles for optimal assay performance.

Main Results:

• An optimized reaction mixture composition was determined for the detection and quantification of GE potato event AV43-6-G7.
• Specific oligonucleotide primers and fluorescent probes were identified and validated for the assay.
• The established temperature-time profile and reaction conditions demonstrated high specificity and efficiency.

Conclusions:

• The developed duplex PCR-RT method provides a reliable and quantitative approach for identifying GE potato event AV43-6-G7.
• Laboratory validation confirms the accuracy and robustness of the protocol for food analysis.
• This methodology contributes to improved laboratory control of GMOs in plant-derived products.