Interrelationships of Ethylene and Abscisic Acid in the Control of Rose Petal Senescence 1
AUTOR(ES)
Mayak, S.
RESUMO
The role of abscisic acid and ethylene in the senescence of rose petals cv. Golden-Wave was examined. A rise in ethylene evolution, followed by an increase in the level of abscisic acid was observed. The presence of abscisic acid in rose petals was established, using different chromatography systems, several bioassays, and immunoassay. External application of ethylene accelerated senescence and induced a rise in endogenous abscisic acid-like activity. Application of abscisic acid promoted senescence, but suppressed ethylene production. The data suggest that the participation of these two hormones in the control of senescence is via the same pathway. The possibility of interrelationship between abscisic acid and ethylene was tested and experimental evidence in favor of this hypothesis is presented. It was suggested that ethylene affects senescence in rose petals by inducing an increase in abscisic acid activity, which in turn may control ethylene evolution, via a feedback mechanism.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=366139Documentos Relacionados
- Senescence and the Fluidity of Rose Petal Membranes 1: RELATIONSHIP TO PHOSPHOLIPID METABOLISM
- Ethylene Action and Loss of Membrane Integrity during Petal Senescence in Tradescantia1
- Abscission of Citrus Leaf Explants: INTERRELATIONSHIPS OF ABSCISIC ACID, ETHYLENE, AND HYDROLYTIC ENZYMES
- Reversible Inhibition of Ethylene Action and Interruption of Petal Senescence in Carnation Flowers by Norbornadiene 1
- Regulation of Senescence in Carnation (Dianthus caryophyllus): Effect of Abscisic Acid and Carbon Dioxide on Ethylene Production 1
