Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 2402-23 |
| Seitenumfang | 22 |
| Fachzeitschrift | The plant cell |
| Jahrgang | 21 |
| Ausgabenummer | 8 |
| Publikationsstatus | Veröffentlicht - Aug. 2009 |
Abstract
Flowering plants control energy allocation to their photosystems in response to light quality changes. This includes the phosphorylation and migration of light-harvesting complex II (LHCII) proteins (state transitions or short-term response) as well as long-term alterations in thylakoid composition (long-term response or LTR). Both responses require the thylakoid protein kinase STN7. Here, we show that the signaling pathways triggering state transitions and LTR diverge at, or immediately downstream from, STN7. Both responses require STN7 activity that can be regulated according to the plastoquinone pool redox state. However, LTR signaling does not involve LHCII phosphorylation or any other state transition step. State transitions appear to play a prominent role in flowering plants, and the ability to perform state transitions becomes critical for photosynthesis in Arabidopsis thaliana mutants that are impaired in thylakoid electron transport but retain a functional LTR. Our data imply that STN7-dependent phosphorylation of an as yet unknown thylakoid protein triggers LTR signaling events, whereby an involvement of the TSP9 protein in the signaling pathway could be excluded. The LTR signaling events then ultimately regulate in chloroplasts the expression of photosynthesis-related genes on the transcript level, whereas expression of nuclear-encoded proteins is regulated at multiple levels, as indicated by transcript and protein profiling in LTR mutants.
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in: The plant cell, Jahrgang 21, Nr. 8, 08.2009, S. 2402-23.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Arabidopsis STN7 kinase provides a link between short- and long-term photosynthetic acclimation
AU - Pesaresi, Paolo
AU - Hertle, Alexander
AU - Pribil, Mathias
AU - Kleine, Tatjana
AU - Wagner, Raik
AU - Strissel, Henning
AU - Ihnatowicz, Anna
AU - Bonardi, Vera
AU - Scharfenberg, Michael
AU - Schneider, Anja
AU - Pfannschmidt, Thomas
AU - Leister, Dario
PY - 2009/8
Y1 - 2009/8
N2 - Flowering plants control energy allocation to their photosystems in response to light quality changes. This includes the phosphorylation and migration of light-harvesting complex II (LHCII) proteins (state transitions or short-term response) as well as long-term alterations in thylakoid composition (long-term response or LTR). Both responses require the thylakoid protein kinase STN7. Here, we show that the signaling pathways triggering state transitions and LTR diverge at, or immediately downstream from, STN7. Both responses require STN7 activity that can be regulated according to the plastoquinone pool redox state. However, LTR signaling does not involve LHCII phosphorylation or any other state transition step. State transitions appear to play a prominent role in flowering plants, and the ability to perform state transitions becomes critical for photosynthesis in Arabidopsis thaliana mutants that are impaired in thylakoid electron transport but retain a functional LTR. Our data imply that STN7-dependent phosphorylation of an as yet unknown thylakoid protein triggers LTR signaling events, whereby an involvement of the TSP9 protein in the signaling pathway could be excluded. The LTR signaling events then ultimately regulate in chloroplasts the expression of photosynthesis-related genes on the transcript level, whereas expression of nuclear-encoded proteins is regulated at multiple levels, as indicated by transcript and protein profiling in LTR mutants.
AB - Flowering plants control energy allocation to their photosystems in response to light quality changes. This includes the phosphorylation and migration of light-harvesting complex II (LHCII) proteins (state transitions or short-term response) as well as long-term alterations in thylakoid composition (long-term response or LTR). Both responses require the thylakoid protein kinase STN7. Here, we show that the signaling pathways triggering state transitions and LTR diverge at, or immediately downstream from, STN7. Both responses require STN7 activity that can be regulated according to the plastoquinone pool redox state. However, LTR signaling does not involve LHCII phosphorylation or any other state transition step. State transitions appear to play a prominent role in flowering plants, and the ability to perform state transitions becomes critical for photosynthesis in Arabidopsis thaliana mutants that are impaired in thylakoid electron transport but retain a functional LTR. Our data imply that STN7-dependent phosphorylation of an as yet unknown thylakoid protein triggers LTR signaling events, whereby an involvement of the TSP9 protein in the signaling pathway could be excluded. The LTR signaling events then ultimately regulate in chloroplasts the expression of photosynthesis-related genes on the transcript level, whereas expression of nuclear-encoded proteins is regulated at multiple levels, as indicated by transcript and protein profiling in LTR mutants.
KW - Arabidopsis/enzymology
KW - Arabidopsis Proteins/genetics
KW - Electron Transport/physiology
KW - Gene Expression Regulation, Plant/genetics
KW - Immunoblotting
KW - Light
KW - Mass Spectrometry
KW - Models, Biological
KW - Oligonucleotide Array Sequence Analysis
KW - Phosphorylation/physiology
KW - Photosynthesis/genetics
KW - Protein Kinases/genetics
KW - Protein-Serine-Threonine Kinases
KW - Signal Transduction/genetics
KW - Thylakoids/enzymology
U2 - 10.1105/tpc.108.064964
DO - 10.1105/tpc.108.064964
M3 - Article
C2 - 19706797
VL - 21
SP - 2402
EP - 2423
JO - The plant cell
JF - The plant cell
SN - 1040-4651
IS - 8
ER -