A Salicylic Acid-Binding Activity and a Salicylic Acid-Inhibitable Catalase Activity Are Present in a Variety of Plant Species

Sánchez-Casas, Paloma; Klessig, Daniel F.

doi:10.1104/pp.106.4.1675

Cited by 153 publications

(77 citation statements)

References 17 publications

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“…Under our experimental conditions, the control plants exhibit SA accumulation at 14 d after salt stress; this accumulation correlates well with the SA-marker gene, PR5, since it was overexpressed in the control plants at the same time. On the other hand, several studies support that SA binds directly to the catalase enzymes inhibiting its activity in several plants species (Sanchez-Casas and Klessig, 1994;Horvath et al, 2002). This inhibition of catalase activity has been proposed to explain an increased H 2 O 2 level upon SA accumulation (Chen et al, 1993), and H 2 O 2 is responsible for ROS accumulation and induction of cell death (Overmyer et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Ammonium enhances resistance to salinity stress in citrus plants

Fernández-Crespo

Camañes

García‐Agustín

2012

Journal of Plant Physiology

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In this work, we demonstrate that NH 4 + nutrition in citrange Carrizo plants acts as an inducer of resistance against salinity conditions. We investigated its mode of action and provide evidence that NH 4 + confers resistance by priming abscisic acid and polyamines, just as enhancing H 2 O 2 and proline basal content. Moreover it observed a diminished Cl -uptake as well as an enhanced PHGPx expression after salt stress. Control and N-NH 4 + plants have shown optimal growth, however it was observed that N-NH 4 + plants have displayed greater dry weight and total lateral roots than control plants, but that differences are not seen for primary roots length. Our results reveal that N-NH 4 + treatment induces a similar phenotypical response to the recent stress-induced morphogenetic response (SIMRs). The hypothesis is that N-NH 4 + treatment triggers mild chronic stress in citrange Carrizo plants, which might explain the SIMR observed. Moreover, we observed modulators of stress signaling, such as H 2 O 2 in N-NH 4 + plants, which could acts as an intermediary between stress and the development of the SIMR phenotype. This observation suggests that NH 4 + treatments induce a mild stress condition that primes the citrange Carrizo defense response by stress imprinting and confers protection against a subsequent salt stress.

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Section: Discussionmentioning

confidence: 99%

Ammonium enhances resistance to salinity stress in citrus plants

Fernández-Crespo

Camañes

García‐Agustín

2012

Journal of Plant Physiology

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“…Also, inoculation of that plant with the phytopathogenic bacterium Pseudomonas syrmgae resulted in a drastic increase of SA concentration after a considerable lagtime (8 h) [5]. In search for possible cellular factors that directly interact witia SA and might constitute a mode of action of SA in plant signal transduction, Klessig and coworkers [6,7] detected an SA-binding activity, characterized it as a salicylate inhibitable catalase [8], and showed its presence in a variety of plant species [9]. These authors [9] suggested that the mode of SA action in plant defense is to bind catalase and inhibit its activity.…”

Section: Introductionmentioning

confidence: 99%

“…In search for possible cellular factors that directly interact witia SA and might constitute a mode of action of SA in plant signal transduction, Klessig and coworkers [6,7] detected an SA-binding activity, characterized it as a salicylate inhibitable catalase [8], and showed its presence in a variety of plant species [9]. These authors [9] suggested that the mode of SA action in plant defense is to bind catalase and inhibit its activity. The resulting elevation of H202 (or other active oxygen species derwed from H202) thus activates defense-related plant genes.…”

Section: Introductionmentioning

confidence: 99%

“…The resulting elevation of H202 (or other active oxygen species derwed from H202) thus activates defense-related plant genes. Thi~ iron-containing catalase was addressed as a salicylate recep!or [9], SA as a signal transducer [7] and an endogenous sec,,nd messenger [9]. These experiments and the derived mode of action of salicylate drew considerable attention (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Analyzing Klessig's results [6][7][8][9], however, cast some doubts to his conclusions. First, in order to serve as a second messenger.…”

Section: Introductionmentioning

confidence: 99%

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Evidence against specific binding of salicylic acid to plant catalase

1995

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It was demonstrated that salicylic acid (SA) not only binds to catalase from differentiated higher plants and plant cell suspension cultures but also to those of fungi and animals. SA bound specifically to iron-containing enzymes, such as catalase, aconitase, lipoxidase and peroxidase, while not to iron-free plant enzymes. On the grounds of these experiments, the claim is further challenged that SA is a signalling compound and second messenger in plants that activates plant defense-related genes through elevated H202 levels by specifically inhibiting catalase activity. SA may just function as a phytoalexin.

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