SCREENING OF SALT-TOLERANT MICROORGANISMS FROM THE SOIL OF A FORMER PESTICIDE STORAGE IN MIRZABAD DISTRICT

More than 20 strains of persistent cultures of microorganisms were isolated from the soil of a former pesticide warehouse in the Mirzabad district of the Syrdarya region. The prevailing concentrations were distinguished by 3 -bacterial cultures: Bacillus megaterium, Bacillus subtilus, Pseudomonas aeruginosa and 2 -actinomycete cultures: Streptomyces violaceorubidus, Streptomyces rochae. The isolated cultures were resistant to high salt concentrations, such as NaCl and Na₂SO₄. It was found that at concentrations of 10-15%, added to the nutrient medium of NaCl and Na₂SO₄ salts, the selected cultures had the ability to grow with the formation of a sufficient concentration of biomass in the culture medium.