Diameter of 14-day colonies of P. fortinii DSE2 isolate developed on different types of nutrient media. CDA—Czapek–Dox agar medium, CDA+Rut—Czapek–Dox agar medium with the addition of rutin to final concentration of 10 μM, CDA+Q—Czapek–Dox agar medium with the addition of quercetin to final concentration of 10 μM, PDA—potato dextrose agar, and MNA—Melin–Norkrans medium. Colony diameter includes the diameter of the mycelium plug (8 mm) used for inoculation at the center of the Petri dish. Different letters indicate statistically significant differences in diameters of colonies grown on different media, p < 0.05.