Paraquat Tolerance of TransgenicNicotiana tabacumwith Enhanced Activities of Glutathione Reductase and Superoxide Dismutase

摘要

Transgenic tobacco with enhanced cytosolic activities of glutathione reductase and superoxide dismutase were generated by cross-fertilization. Leaves of the hybrids exhibited further increased tolerance to a O2-generating herbicide paraquat than those of their parents. This result indicates the efficiency of manipulating more than one gene in improving resistance of plants to photooxidative stress.