This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Web of Science (101) Citing Articles via Google Scholar Google Scholar Articles by Apelbaum, A. Articles by Yang, S. F. Search for Related Content PubMed PubMed Citation Articles by Apelbaum, A. Articles by Yang, S. F. Agricola Articles by Apelbaum, A. Articles by Yang, S. F.

Articles

Biosynthesis of Stress Ethylene Induced by Water Deficit ¹

Department of Vegetable Crops, University of California, Davis, California 95616

Wheat leaves normally produced very little ethylene, but following a water deficit stress which caused a loss of 9% initial fresh weight, ethylene production increased more than 30-fold within 4 hours and declined rapidly thereafter. The changes in ethylene production were paralleled by an increase and subsequent decrease in 1-aminocyclopropanecarboxylic acid (ACC) content. The level of S-adenosylmethionine was unaffected, suggesting that the conversion of S-adenosylmethionine to ACC is a key reaction in the production of water stress-induced ethylene. This view was further supported by the observation that application of ACC to nonstressed leaf tissue caused a 70-fold increase in ethylene production, while aminoethoxyvinylglycine, a known inhibitor of the conversion of S-adenosylmethionine to ACC, inhibited ACC accumulation as well as the surge in ethylene production if the inhibitor was applied prior to the stress treatment. Cycloheximide, an inhibitor of protein synthesis, effectively blocked both ethylene production and ACC formation, suggesting that water stress induces de novo synthesis of ACC synthase, which is the rate-controlling enzyme in the pathway of ethylene biosynthesis.

¹ Supported by National Science Foundation grant PCM78-09278 and by BARD (United States-Israel Agricultural Research and Development Fund) grant I-221-80.

This article has been cited by other articles:

				Y. Tanaka, T. Sano, M. Tamaoki, N. Nakajima, N. Kondo, and S. Hasezawa Ethylene Inhibits Abscisic Acid-Induced Stomatal Closure in Arabidopsis Plant Physiology, August 1, 2005; 138(4): 2337 - 2343. [Abstract] [Full Text] [PDF]

				R. Nakano, E. Ogura, Y. Kubo, and A. Inaba Ethylene Biosynthesis in Detached Young Persimmon Fruit Is Initiated in Calyx and Modulated by Water Loss from the Fruit Plant Physiology, January 1, 2003; 131(1): 276 - 286. [Abstract] [Full Text] [PDF]