Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 2715-32 |
| Seitenumfang | 18 |
| Fachzeitschrift | The plant cell |
| Jahrgang | 21 |
| Ausgabenummer | 9 |
| Publikationsstatus | Veröffentlicht - Sept. 2009 |
Abstract
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.
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in: The plant cell, Jahrgang 21, Nr. 9, 09.2009, S. 2715-32.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Dynamic plastid redox signals integrate gene expression and metabolism to induce distinct metabolic states in photosynthetic acclimation in Arabidopsis
AU - Bräutigam, Katharina
AU - Dietzel, Lars
AU - Kleine, Tatjana
AU - Ströher, Elke
AU - Wormuth, Dennis
AU - Dietz, Karl-Josef
AU - Radke, Dörte
AU - Wirtz, Markus
AU - Hell, Rüdiger
AU - Dörmann, Peter
AU - Nunes-Nesi, Adriano
AU - Schauer, Nicolas
AU - Fernie, Alisdair R
AU - Oliver, Sandra N
AU - Geigenberger, Peter
AU - Leister, Dario
AU - Pfannschmidt, Thomas
PY - 2009/9
Y1 - 2009/9
N2 - 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.
AB - 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.
KW - Acclimatization/genetics
KW - Arabidopsis/genetics
KW - Gene Expression Profiling
KW - Gene Expression Regulation, Plant
KW - Light
KW - Metabolome
KW - Oxidation-Reduction
KW - Photosynthesis
KW - Plastids/metabolism
KW - RNA, Plant/genetics
KW - Signal Transduction
U2 - 10.1105/tpc.108.062018
DO - 10.1105/tpc.108.062018
M3 - Article
C2 - 19737978
VL - 21
SP - 2715
EP - 2732
JO - The plant cell
JF - The plant cell
SN - 1040-4651
IS - 9
ER -