Rapidly induced ethylene formation after wounding is controlled by the regulation of 1-aminocyclopropane-1-carboxylic acid synthesis |
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Authors: | Jörg R Konze Gertrud M K Kwiatkowski |
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Institution: | (1) Institut für Botanik und Mikrobiologie der Technischen Universität München, Arcisstr. 21, D-8000 München 2, Germany;(2) Present address: Pflanzenschutz, Anwendungstechnik Biologische Forschung, Bayer AG, Bayerwerk, D-5090 Leverkusen, Germany |
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Abstract: | Bean leaves from Phaseolus vulgaris L. var. Pinto 111 react to mechanical wounding with the formation of ethylene. The substrate for wound ethylene is 1-aminocyclopropane-1-carboxylic acid (ACC). It is not set free by decompartmentation but is newly synthesized. ACC synthesis starts 8 to 10 min after wounding at 28°C, and 15 to 20 min after wounding at 20°C. Aminoethoxyvinylglycine (AVG), a potent inhibitor of ethylene formation from methionine via ACC, inhibits wound ethylene synthesis by about 95% when applied directly after wounding (incubations at 20°C). AVG also inhibits the accumulation of ACC in wounded tissue. AVG does not inhibit conversion of ACC to ethylene. Wound ethylene production is also inhibited by cycloheximide, n-propyl gallate, and ethylenediaminetetraacetic acid.Abbreviations ACC
1-aminocyclopropane-1-carboxylic acid
- AVG
ammoethoxyvinylglycine
- EDTA
ethylenediaminetetraacetic acid |
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Keywords: | 1-Aminocyclopropane-1-carboxylic acid Ethylene Phaseolus Wounding |
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