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Safety assessment for genetically modified sweet pepper and tomato
Zhang-Liang Chen1, Hongya Gu, Yi Li
1The National Laboratory of Protein Engineering and Plant Genetic Engineering, Peking University, Beijing, 100871, China. zhchen@pku.edu.cn
Toxicology
|May 28, 2003
Summary
Genetically modified (GM) sweet pepper and tomato plants engineered for cucumber mosaic virus (CMV) resistance demonstrated no genotoxicity or adverse effects in animal feeding studies. These GM crops are as safe as their non-GM counterparts for consumption.
Area of Science:
- Agricultural Science
- Plant Biotechnology
- Virology
Background:
- Cucumber mosaic virus (CMV) poses a significant threat to sweet pepper and tomato crop yields.
- Genetic engineering offers a potential strategy to confer resistance against viral pathogens in crops.
Purpose of the Study:
- To develop CMV-resistant sweet pepper and tomato plants using genetic modification.
- To assess the food safety of these genetically modified (GM) crops.
Main Methods:
- Cloning the coat protein (CP) gene of CMV and constructing a gene expression cassette with CaMV promoter and NOS terminator.
- Transforming sweet pepper and tomato plants with the gene construct.
- Conducting in vitro and in vivo genotoxicity tests (micronucleus, sperm aberration, Ames test).
- Performing animal feeding studies with rats and mice.
Main Results:
- The developed GM sweet pepper and tomato plants showed no genotoxicity in various tests.
- Animal feeding studies revealed no significant differences in growth, physiology, or histopathology between GM and non-GM fed animals.
- No adverse effects were observed in rats or mice consuming GM sweet pepper or tomato diets.
Conclusions:
- The CMV-resistant sweet pepper and tomato plants are safe for consumption.
- Genetic modification effectively conferred CMV resistance without compromising food safety.
- These GM crops present a viable option for sustainable agriculture and food security.