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A simple and accurate PCR method for detection of genetically modified rice
Payam Safaei1,2, Ebrahim Molaee Aghaee1, Gholamreza Jahed Khaniki1
11Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
Journal of Environmental Health Science & Engineering
|February 8, 2020
Summary
A new polymerase chain reaction (PCR) method detected genetically modified (GM) rice in 2.4% of samples from Tehran markets. This highlights the need for precise GM food evaluation and clear labeling for consumer safety.
Area of Science:
- Food Science
- Biotechnology
- Molecular Biology
Background:
- Global regulations for genetically modified (GM) crop labeling and use are increasing for consumer health and safety assurance.
- A polymerase chain reaction (PCR) method was developed to detect GM rice in the human food supply.
Purpose of the Study:
- To develop and validate a PCR-based method for detecting GM rice.
- To assess the presence of GM rice in the Tehran market.
Main Methods:
- Eighty-one non-labeled rice samples were randomly collected from Tehran markets.
- DNA was extracted, and the sucrose phosphate synthase (SPS) gene was used for quality control.
- PCR was employed to detect cauliflower mosaic virus (CaMV) 35S promoter and Agrobacterium nopaline synthase (NOS) terminator sequences.
Main Results:
- 2.4% (2 out of 81) of the tested rice samples were positive for the CaMV 35S promoter.
- No samples tested positive for the NOS terminator sequence.
Conclusions:
- The developed PCR method effectively identifies GM rice varieties.
- The study indicates a potential presence of GM rice in Tehran's market.
- There is a need for precise methods to evaluate GM rice products and enforce clear labeling regulations.
