Hormonal Control of Polyribosome Formation in Barley Aleurone Layers
- 1 March 1972
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 49 (3) , 348-352
- https://doi.org/10.1104/pp.49.3.348
Abstract
The addition of abscisic acid to barley (Hordeum vulgare L. cv. Himalaya) aleurone layers at the same time as gibberellic acid completely prevents the gibberellin-induced increases in the percentage of polysomes, the formation of polyribosomes, and the synthesis of α-amylase, even when the molar concentration of gibberellic acid is four times greater than the concentration of abscisic acid. The addition of abscisic acid to aleurone cells producing α-amylase (midcourse addition) inhibits the further synthesis of α-amylase and decreases the percentage of polysomes but does not change the number of ribosomes per cell.Keywords
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