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Open Access Green as soon as Postprint is submitted to ZB.
Regulation of plant glycine decarboxylase by s-nitrosylation and glutathionylation.
Plant Physiol. 152, 1514-1528 (2010)
Mitochondria play an essential role in nitric oxide (NO) signal transduction in plants. Using the biotin-switch method in conjunction with nano-liquid chromatography and mass spectrometry, we identified 11 candidate proteins that were S-nitrosylated and/or glutathionylated in mitochondria of Arabidopsis (Arabidopsis thaliana) leaves. These included glycine decarboxylase complex (GDC), a key enzyme of the photorespiratory C(2) cycle in C3 plants. GDC activity was inhibited by S-nitrosoglutathione due to S-nitrosylation/S-glutathionylation of several cysteine residues. Gas-exchange measurements demonstrated that the bacterial elicitor harpin, a strong inducer of reactive oxygen species and NO, inhibits GDC activity. Furthermore, an inhibitor of GDC, aminoacetonitrile, was able to mimic mitochondrial depolarization, hydrogen peroxide production, and cell death in response to stress or harpin treatment of cultured Arabidopsis cells. These findings indicate that the mitochondrial photorespiratory system is involved in the regulation of NO signal transduction in Arabidopsis.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Programmed cell-death; Mitchondrial alternative oxidase; Pea leaf mitochondria; Arabidopsis suspension cells; Hydrogen-peroxide production; Nitric-oxide; reactive oxygen; Complex-I; Permeability transition; Cytochrome-C
Language
Publication Year
2010
HGF-reported in Year
2010
ISSN (print) / ISBN
0032-0889
e-ISSN
1532-2548
Journal
Plant Physiology
Quellenangaben
Volume: 152,
Issue: 3,
Pages: 1514-1528
Publisher
American Society of Plant Biologists (ASPB)
Reviewing status
Peer reviewed
Institute(s)
Research Unit Environmental Simulation (EUS)
POF-Topic(s)
30202 - Environmental Health
Research field(s)
Environmental Sciences
PSP Element(s)
G-504900-002
Scopus ID
77949534774
PubMed ID
20089767
Erfassungsdatum
2010-06-21