Salicylate-Induced Changes in Superoxide Dismutase and Catalase Activity in Cereals Seedlings in Fusarium graminearum Infection

Fusarium fungi are widespread in nature and cause various plant diseases. The phytohormone salicylic acid can increase plants' resistance to stress factors of various natures. Despite the large number of scientific publications devoted to the study of the functions of salicylic acid in plant organisms, data on the effect of salicylate on plants under conditions of biotic stress are few and contradictory. The aim of the work was to study the dynamics of the activity of individual enzymes of the antioxidant system in the roots and shoots of Zea mays L. and Triticum aestivum L. under the influence of salicylic acid during infection with the phytopathogen Fusarium graminearum. Physiological-biochemical, statistical research methods are applied. The effect of salicylic acid (SA) at a concentration of 0,5 mМ on the dynamics of the activity of catalase and superoxide dismutase (SOD) in the roots and shoots of maize аnd wheat with lesions Fusarium graminearum in the early stages ontogenesis. It was found that under the action of SA, the defeat of phytopathogen increases the activity of SOD in the tissues of seedlings of corn and wheat and the activity of catalase in seedlings of corn.