Title: Autoinhibition of ethylene production in tobacco leaf discs: Enhancement of 1‐aminocyclopropane‐1‐carboxylic acid conjugation
Abstract: Ethylene biosynthesis in leaf discs of tobacco ( Nicotiana tabacum L. cv. Xanthi), as measured by the conversion of L‐[3,4‐ 14 C]‐methionine to 14 C 2 H 4 , was markedly inhibited by exogenous ethylene. This inhibition was accompanied by a decrease in total (free + conjugated) content of 1‐aminocyclopropane‐1‐carboxylic acid (ACC), most of which appeared in its conjugated inactive form. The autoinhibitory effect of ethylene was reversible and could be relieved by Ag + . The Ag + ‐treated leaf discs, with or without ethylene, contained only free ACC at an increased level. The results suggest that in tobacco leaves, the autoinhibition of ethylene production resulted from reduction in the availability of free ACC, through both suppression of ACC formation and increased ACC conjugation.
Publication Year: 1985
Publication Date: 1985-04-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 40
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