{alpha}-Aminoisobutyric acid : A probable competitive inhibitor of conversion of 1-aminocyclopropane-1-carboxylic acid to ethylene |
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Authors: | Satoh, Shigeru Esashi, Yohji |
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Affiliation: | Department of Biological Science, Tohoku University Kawauchi, Sendai 980, Japan |
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Abstract: | Of 16 compounds related to 1-aminocyclopropane-1-carboxylicacid (ACC), aminoisobutyric acid (AIB) inhibited the productionof endogenous ethylene in the cotyledonary segments of cocklebur(Xanthium pennsylvanicum Wallr.) seeds most strongly. AIB at4 mM inhibited the formation of ethylene by about 50%, althoughthe O2 uptake of the segments was not affected even at 20 mM.AIB also inhibited ethylene formation in the stem segments ofetiolated pea (Pisum sativum L. cv. Alaska) seedlings. Kineticanalysis with cell free extracts from etiolated pea shoots revealedthat AIB competitively inhibits the conversion of ACC into ethylene. (Received May 26, 1980; ) |
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