Reactive oxygen signalling: the latest news

Laloi, Christophe; Apel, Klaus; Danon, Antoine

doi:10.1016/j.pbi.2004.03.005

Cited by 625 publications

(375 citation statements)

References 44 publications

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“…The mechanisms of induction of stress response genes are similar among various organisms examined. Similarities in stress-induced changes in gene expression have been observed for a variety of stressors (3,(6)(7)(8). Some that have been studied in detail include radiation, thermal shock, pathogenic infections, anaerobiosis, trauma, photostress, physical wounding, oxidative stress, water stress, and heavy metals.…”

Section: Gene Responsesmentioning

confidence: 68%

Oxidative stress: molecular perception and transduction of signals triggering antioxidant gene defenses

2005

Braz J Med Biol Res

972

470

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Molecular oxygen (O 2 ) is the premier biological electron acceptor that serves vital roles in fundamental cellular functions. However, with the beneficial properties of O 2 comes the inadvertent formation of reactive oxygen species (ROS) such as superoxide (O 2 •-), hydrogen peroxide, and hydroxyl radical (OH • ). If unabated, ROS pose a serious threat to or cause the death of aerobic cells. To minimize the damaging effects of ROS, aerobic organisms evolved non-enzymatic and enzymatic antioxidant defenses. The latter include catalases, peroxidases, superoxide dismutases, and glutathione S-transferases (GST). Cellular ROS-sensing mechanisms are not well understood, but a number of transcription factors that regulate the expression of antioxidant genes are well characterized in prokaryotes and in yeast. In higher eukaryotes, oxidative stress responses are more complex and modulated by several regulators. In mammalian systems, two classes of transcription factors, nuclear factor κB and activator protein-1, are involved in the oxidative stress response. Antioxidant-specific gene induction, involved in xenobiotic metabolism, is mediated by the "antioxidant responsive element" (ARE) commonly found in the promoter region of such genes. ARE is present in mammalian GST, metallothioneine-I and MnSod genes, but has not been found in plant Gst genes. However, ARE is present in the promoter region of the three maize catalase (Cat) genes. In plants, ROS have been implicated in the damaging effects of various environmental stress conditions. Many plant defense genes are activated in response to these conditions, including the three maize Cat and some of the superoxide dismutase (Sod) genes. Correspondence

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Section: Gene Responsesmentioning

confidence: 68%

Oxidative stress: molecular perception and transduction of signals triggering antioxidant gene defenses

2005

Braz J Med Biol Res

972

470

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“…Although the central role of H 2 O 2 , and ROS in general, in several physiological responses has been strongly documented for both biotic and abiotic stresses (Neill et al 2002, Apel and Hirt 2004, Laloi et al 2004, Mittler et al 2004, its implication in PCD is still under debate. In some plant models, H 2 O 2 induces PCD (Desikan et al 1998, Houot et al 2001, Ren et al 2002, Gechev and Hille 2005 and in others it appears not to be required (Glazener et al 1996, Dorey et al 1999, Sasabe et al 2000, Ichinose et al 2001.…”

Section: Discussionmentioning

confidence: 99%

Size, acetylation and concentration of chitooligosaccharide elicitors determine the switch from defence involving PAL activation to cell death and water peroxide production in Arabidopsis cell suspensions

Cabrera

Messiaen

Cambier

et al. 2006

Physiologia Plantarum

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Chitosan oligomers are known elicitors of plant defence mechanisms. In this work, chitooligosaccharides of different degrees of polymerization and degrees of acetylation were prepared and characterized by matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The effect of the degree of polymerization (DP), degree of acetylation and concentration of these chitooligosaccharides on defence activation in Arabidopsis thaliana suspension-cultured cells was studied. Our study results show that fully deacetylated chitooligosaccharides (chitosan oligomers) induce, depending on their DP and concentration, phenylalanine ammonia-lyase (PAL) activation, H 2 O 2 synthesis and cell death in A. thaliana cell suspensions. The progressive reacetylation of the chitosan oligomer elicitors progressively impaired their ability to enhance H 2 O 2 accumulation and cell death, but did not affect the activation of PAL.

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“…It has become apparent that ROS are an integral response to both biotic and abiotic stress. A large number of reviews have been dedicated to this topic (Apel and Hirt, 2004;Baker and Orlandi, 1995;Barna et al, 2012;Baxter et al, 2013;Foyer and Noctor, 2013;Laloi et al, 2004;Mehdy, 1994;Miller et al, 2008;Mittler, 2002;Mittler et al, 2011;O'Brien et al, 2012a;Sutherland, 1991). In this article, we will briefly review the available methods to detect the formation of ROS in plant tissue.…”

Section: Introductionmentioning

confidence: 99%

Reactive oxygen species and plant resistance to fungal pathogens

et al. 2015

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Reactive oxygen species (ROS) have been studied for their role in plant development as well as in plant immunity. ROS were consistently observed to accumulate in the plant after the perception of pathogens and microbes and over the years, ROS were postulated to be an integral part of the defence response of the plant. In this article we will focus on recent findings about ROS involved in the interaction of plants with pathogenic fungi. We will describe the ways to detect ROS, their modes of action and their importance in relation to resistance to fungal pathogens. In addition we include some results from works focussing on the fungal interactor and from studies investigating roots during pathogen attack.

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Reactive oxygen signalling: the latest news

Cited by 625 publications

References 44 publications

Oxidative stress: molecular perception and transduction of signals triggering antioxidant gene defenses

Oxidative stress: molecular perception and transduction of signals triggering antioxidant gene defenses

Size, acetylation and concentration of chitooligosaccharide elicitors determine the switch from defence involving PAL activation to cell death and water peroxide production in Arabidopsis cell suspensions

Reactive oxygen species and plant resistance to fungal pathogens

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