Evidence for light-stimulated synthesis of phosphoenolpyruvate carboxylase in leaves of maize

Illumination (22,000 lumens per $\text{meter}^{2}$) of etiolated maize plants for 80 hours brings about a 5-fold increase in phosphoenolpyruvate carboxylase activity per unit of protein. An increase in carboxylase protein and incorporation of [35S]methionine into the protein occurs simultaneously wi...

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Bibliographic Details
Published in:	Plant physiology (Bethesda) Vol. 66; no. 3; pp. 505 - 509
Main Authors:	Hague, Donald R., Sims, Thomas L.
Format:	Journal Article
Language:	English
Published:	United States American Society of Plant Physiologists 01-09-1980
Subjects:	Corn Electrophoresis Enzyme activity Enzymes Gels Greening Leaves Plants Post exposure prophylaxis Sulfates
Online Access:	Get full text
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Summary:	Illumination (22,000 lumens per $\text{meter}^{2}$) of etiolated maize plants for 80 hours brings about a 5-fold increase in phosphoenolpyruvate carboxylase activity per unit of protein. An increase in carboxylase protein and incorporation of [35S]methionine into the protein occurs simultaneously with the activity increase. In green plants, the level of phosphoenolpyruvate carboxylase protein and enzyme activity is dependent on the intensity of light during growth. These results are consistent with the conclusion that the activity increase results from light-stimulated de novo synthesis of phosphoenolypyruvate carboxylase protein.
Bibliography:	F60 F ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0032-0889 1532-2548
DOI:	10.1104/pp.66.3.505