Auh C-K

Baker CJ

Beffa R

Bestwick CS

Dietrich A

Fauth M

Glazener JA

Hammond-Kosack KE

Hurkman WJ

Kauss H

Legendre L

León J

Li Z-S

May MJ

Mehdy MC

Meyer M

Otha H

Park HH

Rustérucci C

Ryals J

Sanchez-Casas P

Scandalios JG

Schreck R

Sharma YK

Shirasu K

Tavernier E

Vera-Estrella R

Wolter M

Xanthoudakis S

 ▪ Abstract  Rapid generation of superoxide and accumulation of H2O2 is a characteristic early feature of the hypersensitive response following perception of pathogen avirulence signals. Emerging data indicate that the oxidative burst reflects activation of a membrane-bound NADPH oxidase closely resembling that operating in activated neutrophils. The oxidants are not only direct protective agents, but H2O2 also functions as a substrate for oxidative cross-linking in the cell wall, as a threshold trigger for hypersensitive cell death, and as a diffusible signal for induction of cellular protectant genes in surrounding cells. Activation of the oxidative burst is a central component of a highly amplified and integrated signal system, also involving salicylic acid and perturbations of cytosolic Ca2+, which underlies the expression of disease-resistance mechanisms. </jats:p

THE OXIDATIVE BURST IN PLANT DISEASE RESISTANCE

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