SENSITIVITY OF SORGHUM BACTERIOSIS TO ANTIBIOTICS

Abstract

The significant spread of antibiotic resistance, which is a global human problem, is largely due to the excessive use of antibiotics in agricultural practices. The increase in the number of antibiotics in crop production, which is associated with both direct use for the control of phytopathogens and the arrival together with livestock wastes used as fertilizers, leads to an increase in resistance to antimicrobial drugs among plant-associated microorganisms. At the same time, in Ukraine there are practically no data on the detection of antibiotic-resistant strains in crop production and its products, and control over the circulation of bacteria with acquired resistance in this area. The purpose of the study is to determine the sensitivity of strains of bacterial pathogens of sorghum P. syringae to antimicrobial drugs with different mechanisms of action.Determination of antibiotic sensitivity was carried out by the disk diffusion method among strains of Pseudomonas syringae isolated from sorizia and strains of phytopathogenic bacteria from the collection of the department of phytopathogenic bacteria of the Institute of Microbiology and Virology named after D.K. Zabolotny NASU. It was established that the studied strains were divided into 5 groups according to resistance to antimicrobial substances. The most common is resistance to cephalosporin antibiotics. Freshly isolated strains isolated from soriza showed a spectrum of antibiotic sensitivity similar to the collection strains of P. syringae. The studied strains of P. syringae were most sensitive to streptomycin, tetracycline, and chloramphenicol. One of the potential sources for the search for active antagonists against these pathogens is soil streptomycetes.