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S -Nitrosoglutathione is a component of wound- and salicylic acid-induced systemic responses in Arabidopsis thaliana
Espunya i Prat, Ma. Carme (Universitat Autònoma de Barcelona. Departament de Bioquímica i de Biologia Molecular)
De Michele, Roberto (Universitat Autònoma de Barcelona. Departament de Bioquímica i de Biologia Molecular)
Gómez-Cadenas, Aurelio (Universitat Jaume I. Departamento de Ciencias Agrarias y del Medio Natura)
Martínez, M. Carmen (María Carmen) (Universitat Autònoma de Barcelona. Departament de Bioquímica i Biologia Molecular)

Date: 2012
Abstract: 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.
Note: Número d'acord de subvenció MICINN/BFU2007-60569
Note: Número d'acord de subvenció MINECO/BFU2010-15090
Note: Número d'acord de subvenció MICINN/CSD2007-00036
Note: Número d'acord de subvenció 2009/SGR-0795
Rights: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. Creative Commons
Language: Anglès
Document: article ; recerca ; publishedVersion
Subject: Arabidopsis thaliana ; Jasmonic acid ; S-nitrosoglutathione reductase (GSNOR) ; S-nitrosothiols (SNOs) ; Systemic acquired resistance (SAR) ; Wounding
Published in: Journal of experimental botany, Vol. 63, Issue 8 (May 2012) , p. 3219-3227, ISSN 1460-2431

DOI: 10.1093/jxb/ers043
PMID: 22371078


9 p, 899.3 KB

The record appears in these collections:
Articles > Research articles
Articles > Published articles

 Record created 2018-01-26, last modified 2021-03-04



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