An autoradiographic study of the effect of the plant hormone abscisic acid on nucleic acid and protein metabolism
- 1 January 1968
- journal article
- Published by Springer Nature in Planta
- Vol. 82 (4), 342-354
- https://doi.org/10.1007/bf00386437
Abstract
Abscisic acid maintains embryos in a state of dormancy and inhibits the incorporation of H3uridine and H3thymidine but not the incorporation of H3leucine. Ribosomes present in imbibed but dormant embryos do not become associated into polysomes until actual germination of the embryos. Protein synthesis still occurs in embryos when RNA synthesis is inhibited and therefore stable m-RNA must be present in dormant embryos. It is concluded that abscisic acid maintains dormancy by inhibiting the production of specific types of m-RNA, and therefore the formation of specific proteins. The activity of abscisic acid is antagonistic to the effect of gibberellic acid in dormancy.Keywords
This publication has 23 references indexed in Scilit:
- Plant Growth RegulationScience, 1967
- Hormonal Control of Enzyme Synthesis: On the Mode of Action of Gibberellic Acid and Abscisin in Aleurone Layers of BarleyPlant Physiology, 1967
- Dormin (Abscisin II), Inhibitor of Plant DNA Synthesis?Science, 1967
- Identification and Estimation of (+)-Abscisin II (‘Dormin’) in Plant Extracts by SpectropolarimetryNature, 1966
- The Possible Role of Low Temperature in Breaking the Dormancy of Seeds ofFraxinus excelsiorL.Journal of Experimental Botany, 1965
- Chemistry and Physiology of ‘Dormins’ In Sycamore: Identity of Sycamore ‘Dormin’ with Abscisin IINature, 1965
- Chemistry And Physiology of ‘Dormins’ In Sycamore: Action of the Sycamore ‘Dormin’ as a Gibberellin AntagonistNature, 1965
- Long-Lived Messenger RNA: Evidence from Cotton Seed GerminationScience, 1965
- Abscisin II, an Abscission-Accelerating Substance from Young Cotton FruitScience, 1963
- Separation of Mechanisms Initiating Cell Division and Cell Expansion in Lettuce Seed GerminationPlant Physiology, 1960