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CHANGES IN THE LEVEL OF STEROID HORMONES AND IODTHYRONINS IN PHYTOREMEDIANTS DURING THEIR GROWTH IN CONDITIONS OF OIL POLLUTION OF THE SOIL

To assess the features of the formation of plant defense responses under conditions of oil pollution, a comparison was made of the concentration of phytosteroid hormones and iodothyronines in the nuclei and cytoplasm of plant cells against the background of the use of the Lenoil + Elena complex of biological preparations. In the nuclei of shoot and root cells of alfalfa and rye grown under conditions of oil pollution of the soil, a significant decrease in the concentration of phytosteroids was revealed. The use of a complex of biological preparations increased the content of phytosteroids in the nuclei of the cells of the roots and aerial parts to values close to those obtained in the control variant. In the cytoplasm of cells of shoots and roots of alfalfa and rye against the background of soil pollution with oil and treatment with a combination of microbial preparations "Lenoil + Elena", an increase in the level of phytosteroids was revealed. Soil contamination with oil led to a decrease in the content of tetraiodothyronine (T4) in the nuclei of the shoot and root cells of alfalfa and rye. At the same time, no significant differences in tetraiodothyronine concentrations were found in the cytoplasm of root and shoot cells. However, in plants growing on oil-contaminated soil, a decrease in the content of TK in plant cells was observed. It has been established that when plants grow on soil contaminated with oil and the use of biological preparations, the level of phytosteroids and iodothyronines changes, which indicates their active participation in the processes of plant adaptation to environmental factors.