Assessment of the antifungal activity of the violacein-forming strain Janthinobacterium sp. B-3515 against the mould fungus Alternaria brassicicola F-1864

Abstract A study of antifungal properties violacein-forming strain Janthinobacterium sp. B-3515 as well its secondary metabolite, violacein, against Alternaria brassicicola F-1864 is presented. Regardless the presence bacteria, mycelium growth in first two days proceeded at same rate. The effect bacterial was manifested after third day incubation. In general, during co-culture, statistically significantly reduced average mould fungus by 10%. A. decreased an aqueous solution violacein nutrient medium (1%, 3%, and 5%). pigment 5% concentration had greatest effect, difference between control group experimental 18%. mycostatic activity bacteria genus shown for time.