Document Detail

S-Nitrosoglutathione is a component of wound- and salicylic acid-induced systemic responses in Arabidopsis thaliana.
MedLine Citation:
PMID:  22371078     Owner:  NLM     Status:  MEDLINE    
S-Nitrosoglutathione (GSNO) is a bioactive, stable, and mobile reservoir of nitric oxide (NO), and an important player in defence responses to herbivory and pathogen attack in plants. It has been demonstrated previously that GSNO reductase (GSNOR) is the main enzyme responsible for the in vivo control of intracellular levels of GSNO. In this study, the role of S-nitrosothiols, in particular of GSNO, in systemic defence responses in Arabidopsis thaliana was investigated further. It was shown that GSNO levels increased rapidly and uniformly in injured Arabidopsis leaves, whereas in systemic leaves GSNO was first detected in vascular tissues and later spread over the parenchyma, suggesting that GSNO is involved in the transmission of the wound mobile signal through the vascular tissue. Moreover, GSNO accumulation was required to activate the jasmonic acid (JA)-dependent wound responses, whereas the alternative JA-independent wound-signalling pathway did not involve GSNO. Furthermore, extending previous work on the role of GSNOR in pathogenesis, it was shown that GSNO acts synergistically with salicylic acid in systemic acquired resistance activation. In conclusion, GSNOR appears to be a key regulator of systemic defence responses, in both wounding and pathogenesis.
M Carme Espunya; Roberto De Michele; Aurelio Gómez-Cadenas; M Carmen Martínez
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-02-27
Journal Detail:
Title:  Journal of experimental botany     Volume:  63     ISSN:  1460-2431     ISO Abbreviation:  J. Exp. Bot.     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-05-15     Completed Date:  2012-09-07     Revised Date:  2013-06-26    
Medline Journal Info:
Nlm Unique ID:  9882906     Medline TA:  J Exp Bot     Country:  England    
Other Details:
Languages:  eng     Pagination:  3219-27     Citation Subset:  IM    
Departament de Bioquímica i Biologia Molecular, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
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MeSH Terms
Arabidopsis / drug effects,  genetics,  immunology*,  metabolism*
Arabidopsis Proteins / metabolism
Cyclopentanes / metabolism,  pharmacology
Disease Resistance / drug effects,  immunology
Gene Expression Regulation, Plant / drug effects
Glutathione Reductase / metabolism
Oxylipins / metabolism,  pharmacology
Plant Leaves / drug effects,  enzymology,  genetics
Plants, Genetically Modified
S-Nitrosoglutathione / metabolism*
S-Nitrosothiols / metabolism
Salicylic Acid / metabolism,  pharmacology*
Reg. No./Substance:
0/Arabidopsis Proteins; 0/Cyclopentanes; 0/Oxylipins; 0/S-Nitrosothiols; 57564-91-7/S-Nitrosoglutathione; 69-72-7/Salicylic Acid; 6RI5N05OWW/jasmonic acid; EC Reductase; EC reductase, Arabidopsis

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