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Plant and Cell Physiology, 1995, Vol. 36, No. 8 1687-1691
© 1995

Rapid Report

Paraquat Tolerance of Transgenic Nicotiana tabacum with Enhanced Activities of Glutathione Reductase and Superoxide Dismutase

Mitsuko Aono1, Hikaru Saji2, Atsushi Sakamoto3,4, Kunisuke Tanaka3, Noriaki Kondo2 and Kiyoshi Tanaka1

1 Environmental Biology Division, National Institute for Environmental Studies Onogawa, Tsukuba, Ibaraki, 305 Japan
2 Regional Environment Division, National Institute for Environmental Studies Onogawa, Tsukuba, Ibaraki, 305 Japan
3 Department of Biochemistry, College of Agriculture, Kyoto Prefectural University Shimogamo, Kyoto, 606 Japan

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.

4Present address: Department of Regulation Biology, National Institute for Basic Biology, Myodaiji, Okazaki, 444 Japan

(Received October 2, 1995; Accepted October 19, 1995)
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