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Event-specific real-time detection and quantification of genetically modified Roundup Ready soybean
Chia-Chia Huang1, Tzu-Ming Pan
1Institute of Microbiology and Biochemistry, National Taiwan University, Taipei, Taiwan 106.
Journal of Agricultural and Food Chemistry
|May 12, 2005
Summary
This study developed a real-time PCR method for detecting Roundup Ready soybean (RRS). The new LUX primer system offers sensitive and accurate quantification for RRS detection.
Area of Science:
- Agricultural Biotechnology
- Molecular Biology
- Genetics
Background:
- Accurate detection of genetically modified organisms (GMOs) is crucial for regulatory compliance and international trade.
- Existing methods may lack the specificity or sensitivity required for precise GMO quantification.
Purpose of the Study:
- To develop an event-specific real-time PCR assay for the detection and quantification of Roundup Ready soybean (RRS).
- To validate the assay's performance against established regulatory standards.
Main Methods:
- Design of event-specific primers targeting the RRS 5' integration site and the lectin1 gene.
- Construction of a standard reference plasmid for quantitative analysis.
- Utilized the ABI PRISM 7700 sequence detection system with Light Upon Extension (LUX) primers for real-time PCR.
Main Results:
- The LUX real-time PCR system demonstrated a detection limit of 0.05 ng of 100% RRS genomic DNA (20.5 copies).
- The quantification range spanned from 0.1% to 100% RRS.
- The assay's sensitivity and quantification range met EU and Taiwan labeling requirements.
Conclusions:
- The developed event-specific LUX real-time PCR assay provides a sensitive and reliable method for RRS detection and quantification.
- This assay is suitable for regulatory purposes, ensuring compliance with international GMO labeling standards.