Activity of Antioxidant Enzymes and Expression of the Genes Encoding Them in Leaves of Wheat Plants with Different Allelic Status of the GPC-B1 Gene with Optimal Zinc Content in the Environment and Its Deficiency

It has been shown that the studied variants of bread wheat plants are resistant to zinc deficiency in the substrate. Various ways of adaptation to these conditions by the antioxidant system have been discovered in plants that have a functional allele of the GPC-B1 gene. Thus, in plants of line 15-7-1, the maintenance of the redox balance of cells is associated with an increase in the expression of the Cu/ZnSOD gene and a decrease in the expression of the FeSOD and CAT1 genes, whereas in plants of line 13-3, in addition to an increase in the transcripts content of the Cu/ZnSOD gene, it is associated with a high constitutive activity of superoxide dismutase (SOD) and catalase (CAT). The data obtained can be used to create wheat varieties (lines) capable of producing seeds with a relatively high content of zinc under zinc deficiency in the soil.