Characteristics of the Process of Enzyme Release from Secretory Plant Cells

Overview

Journal Plant Physiol

Specialty Physiology

Date 1972 Feb 1

PMID 16657921

Citations 44

Authors

J E Varner

R M Mense

Affiliations

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Abstract

Secretion-the outward movement of molecules across the plasmalemma-of alpha-amylase by barley (Hordeum vulgare L. cv. Himalaya) aleurone layers is an energy-dependent process that is not directly dependent upon protein synthesis or RNA synthesis and does not appear to be under the direct control of gibberellic acid or abscisic acid. Release-the movement of the secreted alpha-amylase molecules through the walls into the surrounding medium-is apparently diffusion limited and is markedly dependent upon the presence of ions.

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Cytochemical localization of phosphatase in barley aleurone cells: The pathway of gibberellic-acid-induced enzyme release.

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On the secretion of α-amylase by barley aleurone layers after incubation in gibberellic acid.

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References

Varner J, Chandra G . HORMONAL CONTROL OF ENZYME SYNTHESIS IN BARLEY ENDOSPERM. Proc Natl Acad Sci U S A. 1964; 52(1):100-6. PMC: 300580. DOI: 10.1073/pnas.52.1.100. View

Chrispeels M, Varner J . Gibberellic Acid-enhanced synthesis and release of alpha-amylase and ribonuclease by isolated barley and aleurone layers. Plant Physiol. 1967; 42(3):398-406. PMC: 1086548. DOI: 10.1104/pp.42.3.398. View

Doerschug M, Chrispeels M . Synthesis and Secretion of Hypoxyproline-containing Macromolecules in Carrots: III. Metabolic Requirements for Secretion. Plant Physiol. 1970; 46(3):363-6. PMC: 396597. DOI: 10.1104/pp.46.3.363. View

Filner P, Varner J, Wray J . Environmental or developmental changes cause many enzyme activities of higher plants to rise or fall. Science. 1969; 165(3891):358-67. DOI: 10.1126/science.165.3891.358. View