S-nitrosoglutathione is a component of wound- and salicylic acid-induced systemic responses in Arabidopsis thaliana
| Autor: | M. Carme Espunya, M. Carmen Martínez, Aurelio Gómez-Cadenas, Roberto De Michele |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Arabidopsis thaliana
Physiology Arabidopsis Plant Science Cyclopentanes Nitric oxide S-Nitrosoglutathione chemistry.chemical_compound Gene Expression Regulation Plant systemic acquired resistance (SAR) Oxylipins S-nitrosothiols (SNOs) Disease Resistance Jasmonic acid S-Nitrosothiols biology Arabidopsis Proteins jasmonic acid S-nitrosoglutathione reductase (GSNOR) biology.organism_classification Plants Genetically Modified wounding Research Papers Cell biology Plant Leaves Systemic acquired resistance (SAR) Glutathione Reductase chemistry Biochemistry Wounding Salicylic Acid Systemic acquired resistance Salicylic acid Intracellular |
| Zdroj: | Journal of experimental botany 63 (2012): 3219–3227. doi:10.1093/jxb/ers043 info:cnr-pdr/source/autori:ESPUNYA MC, DE MICHELE R, GOMEZ-CADENAS A, MARTINEZ MC/titolo:S-nitrosoglutathione is a component of wound-and salicylic acid-induced systemic responses in Arabidopsis thaliana/doi:10.1093%2Fjxb%2Fers043/rivista:Journal of experimental botany/anno:2012/pagina_da:3219/pagina_a:3227/intervallo_pagine:3219–3227/volume:63 Journal of Experimental Botany Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona |
| DOI: | 10.1093/jxb/ers043 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|