Effects of Cycloheximide on Indoleacetic Acid-induced Ethylene Production in Pea Root Tips
- 1 August 1973
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 52 (2), 171-173
- https://doi.org/10.1104/pp.52.2.171
Abstract
Cycloheximide inhibited ethylene production in excised pea root tips treated with high levels of indoleacetic acid (100 μm and 10 μm). In contrast, cycloheximide did not inhibit ethylene production induced by a lower concentration (1 μm) of indoleacetic acid unless it was added 2 hours before the indoleacetic acid treatment. These observations suggest that indoleacetic acid has two effects on the enzyme system involved in ethylene synthesis. At low concentrations (1 μm) indoleacetic acid increases ethylene production without protein synthesis, whereas at the higher concentrations, the synthesis of new protein is associated with increased ethylene production.Keywords
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