期刊
PLANT SCIENCE
卷 181, 期 5, 页码 534-539出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.plantsci.2011.05.002
关键词
Peroxynitrite; Tyrosine nitration; Plant; Defense response; Signaling
资金
- Ministerodell'Universita e dellaRicerca
Peroxynitrite (ONOO-) is a reactive nitrogen species formed when nitric oxide (NO) reacts with the superoxide anion (O-2(-)). It was first identified as a mediator of cell death in animals but was later shown to act as a positive regulator of cell signaling, mainly through the posttranslational modification of proteins by tyrosine nitration. In plants, peroxynitrite is not involved in NO-mediated cell death and its physiological function is poorly understood. However, it is emerging as a potential signaling molecule during the induction of defense responses against pathogens and this could be mediated by the selective nitration of tyrosine residues in a small number of proteins. In this review we discuss the general role of tyrosine nitration in plants and evaluate recent evidence suggesting that peroxynitrite is an effector of NO-mediated signaling following pathogen infection. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
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