EFFECTS OF BIOSTIMULANTS ON GENE EXPRESSION IN COTTON (GOSSYPIUM SPP.) UNDER SALT STRESS CONDITIONS

In this study, the cotton (Gossypium hirsutum L.) cultivar “Porloq-4” was 
investigated under salt stress conditions (100 mM NaCl) in response to the application of the 
biopreparations “Rizokom-1” and “Mikrozim-2”. The results demonstrated that these 
biopreparations significantly increased the expression of antioxidant genes SOD, POD, CAT, 
APX, GPX, and GR, thereby activating the plant’s stress-response mechanisms. It was found that 
“Rizokom-1” predominantly enhances the activity of antioxidant and phytohormonal systems, 
whereas “Mikrozim-2” stimulates the expression of genes associated with osmoprotectant 
biosynthesis and metabolic processes. The obtained results indicate the effectiveness of these 
biopreparations in improving cotton tolerance to salt stress.