KILLER ACTIVITY OF YEASTS ISOLATED FROM THE WATER ENVIRONMENT

The killer activity of 46 strains belonging to 12 yeast and yeast-like species isolated from water or sediment samples was studied. Only two strains of the genus Cryptococcus did not show killer activity. Kille r activity of yeast-like species Aureobasidium pullulans, Hyphopichia burtonii and Geotrichum candidum, and yeast species Candida krusei and Candida lambica was low. Sporobolomyces salmonicolor, Cryptococcus la urentii and Cryptococcus albidus had better activity against basidiomy cetous than ascomycetous species. Hansenula anomala strains showed goo d activity against Geotrichum candidum strains, Cryptococcus albidus, and Sporobolomyces salmonicolor. Rhodotorula species showed activity a gainst the majority of both ascomycetous and basidiomycetous species.