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Applied and Environmental Microbiology, February 1999, p. 849-852, Vol. 65, No. 2
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

New Assay for Rhizobitoxine Based on Inhibition of 1-Aminocyclopropane-1-Carboxylate Synthase

Tsuyoshi Yasuta,1 Shigeru Satoh,2 and Kiwamu Minamisawa1,*

Institute of Genetic Ecology, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577,1 and Laboratory of Bio-adaptation, Graduate School of Agricultural Science, Tohoku University, Tsutsumidori-amamiyamachi 1-1, Aoba-ku, Sendai 981-8555,2 Japan

Received 9 July 1998/Accepted 12 November 1998

Rhizobitoxine is synthesized by the legume symbiont Bradyrhizobium elkanii and the plant pathogen Burkholderia andropogonis. Rhizobitoxine competitively inhibited 1-aminocyclopropane-1-carboxylate (ACC) synthase bLE-ACS2 from the tomato, a key enzyme in the pathway of ethylene biosynthesis. Based on this inhibition of ACC synthase, we have developed a new assay for rhizobitoxine.

* Corresponding author. Mailing address: Institute of Genetic Ecology, Tohoku University, Katahira, Aoba-ku, Sendai 980-8577, Japan. Phone: 81-22-217-5684. Fax: 81-22-263-9845. E-mail: kiwamu{at}ige.tohoku.ac.jp.

Applied and Environmental Microbiology, February 1999, p. 849-852, Vol. 65, No. 2
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


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