Biologia Plantarum · 2007 · 28 citations · 30 references
AgriculturePlant BiologyPlant SciencesPlant BiochemistryPlant PhysiologyPlant-microbe InteractionsDisease ResistanceInduced ResistancePlant Defense ResponsesPlant Disease ResistanceSeedling ResistanceSystemic Acquired ResistanceDefense-related EnzymesPathogen Resistance InductionPeroxidase EnzymesPlant Disease Resistance MechanismsPlant Resistance Signaling PathwaysSeedling Resistance EvaluationSeedling Resistance To Abiotic-pathogen Interactions
Systemic acquired resistance (SAR) can be induced in plants by incompatible pathogens, pathogen derived extracts, or certain chemicals as benzothiadiazole (BTH). The aim of this work was to compare changes in peroxidase and chitinase activities, enzymes considered as PR-proteins, caused by BTH and the pathogen Plasmopara halstedii. Hypocotyls from susceptible and resistant BTH-treated sunflower seedlings showed increased peroxidase and chitinase activities. Inoculation with P. halstedii increased chitinase and peroxidase activities in inoculated hypocotyls from susceptible but not from resistant sunflower seedlings.
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