Transgenic tomatoes showing higher glutathione peroxydase antioxidant activity are more resistant to an abiotic stress but more susceptible to biotic stresses

▶ GPx-overexpressing plants were less sensitive to mechanical stress than controls. ▶ GPx genotypes had larger necrotic areas than controls when infected by Botrytis cinerea. ▶ GPx genotypes seemed more susceptible to Oidium neolycopersici than controls.