Antagonistic activity of pigment-forming streptomycets isolated from various anthropogenic zones of Tashkent, Uzbekistan

Abstract

Actinomycetes play an important role in soil formation and soil fertility. Improvement of soils is connected with their activity. they transform and destroy complex organic compounds (cellulose, chitin, lignin, and others) that are inaccessible to many other microorganisms. Actinomycetes are of the greatest interest for biotechnology as producers of antibiotic substances. Antagonistic activity to phytopathogens of local strains of pigment-forming actinomycetes of the genus Streptomyces isolated from various anthropogenic zones of Tashkent was shown. Active strains with high antagonistic activity to plant pathogens were selected. The results showed that the significant was the antagonistic effect of Streptomyces sp.15 to the studied phytopathogens, while the zone of no growth of pathogens reached from 22 mm to 26 mm.