Activitatea antibacteriană a unor tulpini acvatice de fungi din genul Penicillium, Trichoderma și Talaromyces

Abstract

The diversity of freshwater fungi is great, but studies of aquatic fungi are still in their infancy. Studying the biodiversity of freshwater micromycetes is very necessary to complete the knowledge about this enormous group of microorganisms. This paper deals with the research results of studies on the antimicrobial activity of micromycetes of the genus Penicillium, Trichoderma and Talaromyces isolated from the mud, the water column and the biofilm of the lake system of the park "La Izvor" (Chisinau city). The antimicrobial activity of 33 strains was determined by the disk diffusion method, the tested cultures served pathogenic bacteria and fungi that are common on the territory of the Republic of Moldova and cause crop diseases. According to the results obtained, the most active strains of micromycetes turn out to be the strains isolated from the mud, the diameter of the zones of inhibition on the growth of phytopagens varied from 25.0 to 40.0 mm.