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Author Pesaresi, Paolo ♦ Hertle, Alexander ♦ Pribil, Mathias ♦ Kleine, Tatjana ♦ Wagner, Raik ♦ Strissel, Henning ♦ Ihnatowicz, Anna ♦ Bonardi, Vera ♦ Scharfenberg, Michael ♦ Schneider, Anja ♦ Pfannschmidt, Thomas ♦ Leister, Dario
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher American Society of Plant Biologists
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Life sciences; biology ♦ Physiology & related subjects ♦ Biochemistry ♦ Genetics and evolution ♦ Natural history of organisms ♦ Technology ♦ Medicine & health ♦ Human anatomy, cytology, histology ♦ Human physiology ♦ Pharmacology and therapeutics ♦ Diseases ♦ Manufacture for specific uses ♦ Precision instruments & other devices
Subject Domain (in MeSH) Cells ♦ Anatomy ♦ Eukaryota ♦ Organisms ♦ Enzymes and Coenzymes ♦ Amino Acids, Peptides, and Proteins ♦ Chemicals and Drugs ♦ Investigative Techniques ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment ♦ Physical Phenomena ♦ Chemical Phenomena ♦ Genetic Phenomena ♦ Biological Sciences
Subject Keyword Discipline Botany ♦ Arabidopsis Proteins ♦ Physiology ♦ Arabidopsis ♦ Enzymology ♦ Photosynthesis ♦ Protein Kinases ♦ Genetics ♦ Metabolism ♦ Electron Transport ♦ Gene Expression Regulation, Plant ♦ Radiation Effects ♦ Immunoblotting ♦ Light ♦ Mass Spectrometry ♦ Models, Biological ♦ Oligonucleotide Array Sequence Analysis ♦ Phosphorylation ♦ Protein-serine-threonine Kinases ♦ Signal Transduction ♦ Thylakoids ♦ Journal Article ♦ Research Support, Non-u.s. Gov't
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.
Description Country affiliation: Italy
Author Affiliation: Pesaresi P ( Dipartimento di Produzione Vegetale, Università degli studi di Milano c/o Parco Tecnologico Padano Via Einstein, 26900 Lodi, Italy.)
ISSN 10404651
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2009-08-01
Publisher Place United States
e-ISSN 1531298X
Volume Number 21
Issue Number 8

Source: WHO-Global Index Medicus