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Light/Dark modulation of enzyme activity in developing barley leaves.
MedLine Citation:
PMID:  16667226     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Light/dark modulation of the ribulose-5-phosphate kinase, NADP(+)-glyceraldehyde-3-phosphate dehydrogenase, and fructose- 1,6-bisphosphatase activity was measured in the developing primary leaf of barley (Hordeum vulgare L.) seedlings. Ribulose-5-phosphate kinase and NADP(+) -glyceraldehyde-3-phosphate dehydrogenase were fully light activated even at the earliest developmental stage sampled. In contrast, light modulation of fructose- 1,6-bisphosphatase exhibited a complex response to leaf developmental status. Light stimulation of fructose- 1,6-bisphosphatase activity (measured at pH 8.0) increased progressively during leaf development. On the other hand, acid fructose- 1,6-bisphosphatase activity (measured at pH 6.0) was inhibited by light, and this light inhibition was greater in the base of the leaf than in the tip of the leaf.
Authors:
M H Sibley; L E Anderson
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Plant physiology     Volume:  91     ISSN:  0032-0889     ISO Abbreviation:  Plant Physiol.     Publication Date:  1989 Dec 
Date Detail:
Created Date:  2010-06-29     Completed Date:  2010-07-08     Revised Date:  2010-09-14    
Medline Journal Info:
Nlm Unique ID:  0401224     Medline TA:  Plant Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1620-4     Citation Subset:  -    
Affiliation:
Department of Biological Sciences, University of Illinois at Chicago, Box 4348, Chicago, Illinois 60680.
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