Comparative analysis of the content of salicylic acid in biotechnological cotton genotypes under some kinds of abiotic stress

The relevance of this study is conditioned by the current findings on salicylic acid (SA) synthesis in plants, which suggest that the presence of some transient factors in cotton is a signal that the stress-protective functions of the plant are being activated. An increase in the content of key mediators of the defence signalling system in cotton cells triggers the activation of stress factors, triggering the defence mechanisms of the living organism. Thus, the resistance of plants to certain types of abiotic stress is achieved by activating the protective reactions of the signalling system. This process allows for the targeted use of biologically active substances such as salicylic acid. Therefore, the purpose of this study is to investigate the combined properties of the protective signalling system of some genetic types of cotton plants, when phenolic acids are synthesised in them. The leading approach to the study of this issue is a laboratory experiment, which allowed comprehensively considering cotton lines containing RNA sensitive to certain types of abiotic stress. Additional biological and chemical techniques were used as auxiliary methods in the field to test the specific effects of saline soils on cotton RNA salicylic acid concentration. This study presents data on the resistance of the RNA interference (RNAi) genotype ESKIMO1 to salinity and limited irrigation. The content of salicylic acid in cotton tissues under the influence of various concentrations of NaCl was studied. The formation of reactive oxygen species in the process of activation of plant defence reactions to certain types of abiotic stress is substantiated. The study materials are of practical value to microbiologists, geneticists, and agronomists. The investigation of the biotechnological features of the plant genotype plays an important role in understanding plant adaptation to natural conditions caused by certain types of abiotic stress. The affordability of salicylic acid allows its widespread application as a commercial reagent in crop production practices