Oxidative burst is one of the earliest responses in plant resistance to pathogen attack. A localized infection or biochemical reagent treatment can lead to resistance against a subsequent infection with widely different pathogens.Resistance is expressed locally at the site of primary inoculation but also systemially in tissues remotely located from the initial treatment.This form of induced resistance,called systemic acquired resistance(SAR). The producing,scavenging and the role as a secondary signal for S...