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, 79 (4), 583-93

H2O2 From the Oxidative Burst Orchestrates the Plant Hypersensitive Disease Resistance Response

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H2O2 From the Oxidative Burst Orchestrates the Plant Hypersensitive Disease Resistance Response

A Levine et al. Cell.

Abstract

Microbial elicitors or attempted infection with an avirulent pathogen strain causes the rapid production of reactive oxygen intermediates. We report here that H2O2 from this oxidative burst not only drives the cross-linking of cell wall structural proteins, but also functions as a local trigger of programmed death in challenged cells and as a diffusible signal for the induction in adjacent cells of genes encoding cellular protectants such as glutathione S-transferase and glutathione peroxidase. Thus, H2O2 from the oxidative burst plays a key role in the orchestration of a localized hypersensitive response during the expression of plant disease resistance.

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