Red/far-red light modulates phospholipase D activity in oat seedlings: Relation of enzyme photosensitivity to photosynthesis

Phospholipase D (PLD) activity was found to be higher in etiolated oat seedlings than in green seedlings. White and red (R) light exposure inhibited PLD activity in etiolated seedlings. Far-red light eliminated R-light-induced decrease in PLD activity, indicating phytochrome participation in observe...

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Bibliographic Details
Published in:	Journal of plant physiology Vol. 164; no. 1; pp. 108 - 110
Main Authors:	Kabachevskaya, Alena M., Liakhnovich, Georgy V., Kisel, Mikhail A., Volotovski, Igor D.
Format:	Journal Article
Language:	English
Published:	Jena Elsevier GmbH 01-01-2007 Elsevier
Subjects:	Avena - drug effects Avena - enzymology Avena - radiation effects Avena sativa Biological and medical sciences Diuron - pharmacology enzyme activity far-red light Fundamental and applied biological sciences. Psychology Glucose Glucose - pharmacology Light Metabolism oats Phospholipase D Phospholipase D - antagonists & inhibitors Phospholipase D - physiology Phospholipase D - radiation effects photoreceptors Photosynthesis Photosynthesis, respiration. Anabolism, catabolism Photosynthetic Reaction Center Complex Proteins - physiology Phytochrome Phytochrome - physiology plant physiology Plant physiology and development red light seedling growth seedlings Seedlings - drug effects Seedlings - enzymology Seedlings - radiation effects Avena sativa P r D PLD Glucose Gr FR PEth Phospholipase D Et Glu R PC Phytochrome DCMU P fr Photosynthesis Wt Monocotyledones Enzyme Esterases Phosphoric diester hydrolases Gramineae Angiospermae Hydrolases Spermatophyta
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Summary:	Phospholipase D (PLD) activity was found to be higher in etiolated oat seedlings than in green seedlings. White and red (R) light exposure inhibited PLD activity in etiolated seedlings. Far-red light eliminated R-light-induced decrease in PLD activity, indicating phytochrome participation in observed photomodulation. Inhibitor of electron transport in chloroplast 3-(3,4-dichlorophenyl)-1,1-dimethylurea stimulated and glucose suppressed PLD activity in green and etiolated oat seedlings, respectively. These results suggest that PLD activity in oat seedling is regulated by light with involvement of phytochrome photoreceptor, and associated with photosynthesis process.
Bibliography:	http://dx.doi.org/10.1016/j.jplph.2006.02.008 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0176-1617 1618-1328
DOI:	10.1016/j.jplph.2006.02.008