Activities of hydrolases and their protein inhibitors in wheat leaves treated with salicylic and jasmonic acids and infected with Septoria nodorum strains differing in aggressiveness

Abstract

The effect of infection with fungus Septoria nodorum strains differing in aggressiveness on the activity of hydrolytic enzymes (amylases and proteinases) and their protein inhibitors in the leaves of Triticum aestivum L. pretreated with salicylic and jasmonic acids was studied. It was shown that aggressive Septoria nodorum strains accelerated development, caused intensive necrotic reaction on the wheat leaves, increased the production of amylases and proteinases, and decreased the activity of their protein inhibitors. Salicylic and jasmonic acids altered the activity of the “hydrolase-inhibitor” complex, which indicated the possibility of regulation of the activity (content) of this group of compounds via exogenous effects, including the treatment of plants with inducers of resistance of various natures.