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Plant Physiol. 1982 Oct;70(4):1039-43.

Senescence in isolated carnation petals : effects of indoleacetic Acid and inhibitors of protein synthesis.

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Department of Horticulture and Forestry, Cook College, Rutgers University, New Brunswick, New Jersey 08903.


Indoleacetic acid induces senescence in isolated carnation (Dianthus caryophyllus, cv. White Sim) petals, increasing the duration and amount of ethylene production. This effect is inhibited by Actinomycin D, an inhibitor of RNA synthesis, and cycloheximide, a translational inhibitor of protein synthesis. The ability of petals to respond to indoleacetic acid appears to be a function of physiological age. Indoleacetic acid is capable of enhancing ethylene evolution and senescence only in specific portions of the petal.

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