BIOCHEMICAL INDICES OF PROOXIDANT-ANTIOXIDANT PROCESSES IN CALENDULA OFFICINALIS L., GROWN UNDER THE INFLUENCE OF GROWTH BIOSTIMULANTS
The effect of plant growth biostimulants «Vermymag», «Vermyiodis» and «Vermystym» on the content of enzymes of antioxidant protection and metabolites of the prooxidant-antioxidant system of C. officinalis flowers of the cultivated variety «Poliova Krasunia» cultivated in the soil and climatic conditions of the Precarpathian region has been analyzed. It was shown that applying biostimulants during cultivation of C. officinalis flowers contributed to the increase (p<0.05-0.01) of antioxidant enzymes activity compared with control plants. In particular, the superoxide dismutase and catalase activity was higher with applying biostimulants «Vermymag» and «Vermyiodis». The biostimulant «Vermymag» had a positive influence on the peroxidase activity, contributing to the increase of enzyme content up to 21% comparing with the control. The content of ascorbic acid increased under the influence of all biostimulants in plant cells. The use of stimulants positively influenced the redox state of C. officinalis cells, contributing to suppressing lipoperoxidation processes and increasing the resistance of plants to the action of stress factors. It is found out that growth biostimulants promote the balance of prooxidant-antioxidant processes in C. officinalis plants.
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