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  Sugars and circadian regulation make major contributions to the global regulation of diurnal gene expression in Arabidopsis

Blaesing, O. E., Gibon, Y., Guenther, M., Hoehne, M., Morcuende, R., Osuna, D., et al. (2005). Sugars and circadian regulation make major contributions to the global regulation of diurnal gene expression in Arabidopsis. Plant Cell, 17(12), 3257-3281. doi:10.​1105/​tpc.​105.​035261.

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 Creators:
Blaesing, O. E.1, Author
Gibon, Y.2, Author              
Guenther, M.2, Author              
Hoehne, M.2, Author              
Morcuende, R.1, Author
Osuna, D.2, 3, Author              
Thimm, O.2, Author              
Usadel, B.2, Author              
Scheible, W.-R.3, Author              
Stitt, M.2, Author              
Affiliations:
1External Organizations, ou_persistent22              
2System Regulation, Department Stitt, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753327              
3Molecular Genomics, Department Stitt, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753328              

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Free keywords: adp-glucose pyrophosphorylase nitrate reductase-activity organic-acid metabolism elevated carbon-dioxide constitutive expression microarray analysis starch metabolism protein family light period plants
 Abstract: The diurnal cycle strongly influences many plant metabolic and physiological processes. Arabidopsis thaliana rosettes were harvested six times during 12-h-light/12-h-dark treatments to investigate changes in gene expression using ATH1 arrays. Diagnostic gene sets were identified from published or in-house expression profiles of the response to light, sugar, nitrogen, and water deficit in seedlings and 4 h of darkness or illumination at ambient or compensation point [CO2]. Many sugar-responsive genes showed large diurnal expression changes, whose timing matched that of the diurnal changes of sugars. A set of circadian-regulated genes also showed large diurnal changes in expression. Comparison of published results from a free-running cycle with the diurnal changes in Columbia-0 (Col-0) and the starchless phosphoglucomutase (pgm) mutant indicated that sugars modify the expression of up to half of the clock-regulated genes. Principle component analysis identified genes that make large contributions to diurnal changes and confirmed that sugar and circadian regulation are the major inputs in Col-0 but that sugars dominate the response in pgm. Most of the changes in pgm are triggered by low sugar levels during the night rather than high levels in the light, highlighting the importance of responses to low sugar in diurnal gene regulation. We identified a set of candidate regulatory genes that show robust responses to alterations in sugar levels and change markedly during the diurnal cycle.

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Language(s): eng - English
 Dates: 2005-11-222005
 Publication Status: Published in print
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 Identifiers: ISI: ISI:000233655700006
DOI: 10.​1105/​tpc.​105.​035261
ISSN: 1040-4651 (Print) 1040-4651 (Linking)
URI: ://000233655700006 http://www.plantcell.org/content/17/12/3257.full.pdf
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Title: Plant Cell
Source Genre: Journal
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Pages: - Volume / Issue: 17 (12) Sequence Number: - Start / End Page: 3257 - 3281 Identifier: -