Effects of urate, a natural inhibitor of peroxynitrite-mediated toxicity, in the response of Arabidopsis thaliana to the bacterial pathogen Pseudomonas syringae

Alamillo, Josefa M. and García Olmedo, Francisco (2001). Effects of urate, a natural inhibitor of peroxynitrite-mediated toxicity, in the response of Arabidopsis thaliana to the bacterial pathogen Pseudomonas syringae. "Plant Journal", v. 25 (n. 5); pp. 529-540. ISSN 0960-7412. https://doi.org/10.1046/j.1365-313x.2001.00984.x.

Description

Title: Effects of urate, a natural inhibitor of peroxynitrite-mediated toxicity, in the response of Arabidopsis thaliana to the bacterial pathogen Pseudomonas syringae
Author/s:
  • Alamillo, Josefa M.
  • García Olmedo, Francisco
Item Type: Article
Título de Revista/Publicación: Plant Journal
Date: March 2001
ISSN: 0960-7412
Volume: 25
Subjects:
Freetext Keywords: Arabidopsis, disease-resistance, Pseudomonas, peroxynitrite, scavenger, urate.
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Biotecnologia [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Urate, a natural peroxynitrite scavenger, has been used to investígate the possible role of peroxynitrite during plant-pathogen interactions. Urate greatly reduced lesión formation in Arabidopsis leaves treated with an abiotic peroxynitrite-generating system or with a peroxynitrite solution, indicating that it can act as an effective scavenger in planta. In the interaction with the avirulent Pseudomonas syringae pv. phaseolicola [avrRPNW], cell death in the inoculated área was strongly reduced by urate, without compromising disease resistance. In contrast, urate promoted discrete cell death in response to an isogenic Pseudomonas syringae (awRPMT), which did not trigger an HR when inoculated alone, and it induced resistance and arrest of pathogen growth. Scavenging of peroxynitrite did not modify the response of Arabidopsis to an avirulent strain of Xanthomonas campestris pv campestris, that showed a high resistance to NO and peroxynitrite. Our data indícate that peroxynitrite plays a significant role in the responses of plants to Pseudomonas syring

More information

Item ID: 5832
DC Identifier: http://oa.upm.es/5832/
OAI Identifier: oai:oa.upm.es:5832
DOI: 10.1046/j.1365-313x.2001.00984.x
Official URL: http://onlinelibrary.wiley.com/doi/10.1046/j.1365-313x.2001.00984.x/abstract
Deposited by: Memoria Investigacion
Deposited on: 01 Feb 2011 09:00
Last Modified: 20 Apr 2016 14:32
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