Dynamic Plastid Redox Signals Integrate Gene Expression and Metabolism to Induce Distinct Metabolic States in Photosynthetic Acclimation in Arabidopsis

Plants possess acclimation responses in which structural reconfigurations adapt the photosynthetic apparatus to fluctuating illumination. Long-term acclimation involves changes in plastid and nuclear gene expression and is controlled by redox signals from photosynthesis. The kinetics of these signal...

Celý popis

Uložené v:
Podrobná bibliografia
Vydané v:The Plant cell Ročník 21; číslo 9; s. 2715 - 2732
Hlavní autori: Bräutigam, Katharina, Dietzel, Lars, Kleine, Tatjana, Ströher, Elke, Wormuth, Dennis, Dietz, Karl-Josef, Radke, Dörte, Wirtz, Markus, Hell, Rüdiger, Dörmann, Peter, Nunes-Nesi, Adriano, Schauer, Nicolas, Fernie, Alisdair R, Oliver, Sandra N, Geigenberger, Peter, Leister, Dario, Pfannschmidt, Thomas
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States American Society of Plant Biologists 01.09.2009
Predmet:
acclimation
Acclimatization
Acclimatization - genetics
Arabidopsis
Arabidopsis - genetics
Arabidopsis - metabolism
Arabidopsis thaliana
energy resources
Energy sources
gene expression
Gene Expression Profiling
Gene Expression Regulation, Plant
genes
genetics
Light
lighting
metabolism
Metabolites
Metabolome
Oxidation-Reduction
Photosynthesis
photosystem I
Plastids
Plastids - metabolism
primary productivity
RNA, Plant
RNA, Plant - genetics
Signal Transduction
ISSN:1040-4651, 1532-298X, 1532-298X
On-line prístup:Získať plný text
Tagy: Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
Popis
Shrnutí:Plants possess acclimation responses in which structural reconfigurations adapt the photosynthetic apparatus to fluctuating illumination. Long-term acclimation involves changes in plastid and nuclear gene expression and is controlled by redox signals from photosynthesis. The kinetics of these signals and the adjustments of energetic and metabolic demands to the changes in the photosynthetic apparatus are currently poorly understood. Using a redox signaling system that preferentially excites either photosystem I or II, we measured the time-dependent impact of redox signals on the transcriptome and metabolome of Arabidopsis thaliana. We observed rapid and dynamic changes in nuclear transcript accumulation resulting in differential and specific expression patterns for genes associated with photosynthesis and metabolism. Metabolite pools also exhibited dynamic changes and indicate readjustments between distinct metabolic states depending on the respective illumination. These states reflect reallocation of energy resources in a defined and reversible manner, indicating that structural changes in the photosynthetic apparatus during long-term acclimation are additionally supported at the level of metabolism. We propose that photosynthesis can act as an environmental sensor, producing retrograde redox signals that trigger two parallel adjustment loops that coordinate photosynthesis and metabolism to adapt plant primary productivity to the environment.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
Online version contains Web-only data.
The author responsible for distribution of materials integral to the findings presented in this article in accordance with the policy described in the Instructions for Authors (www.plantcell.org) is: Thomas Pfannschmidt (thomas.pfannschmidt@uni-jena.de).
www.plantcell.org/cgi/doi/10.1105/tpc.108.062018
ISSN:1040-4651
1532-298X
1532-298X
DOI:10.1105/tpc.108.062018