Determination of Beauveria bassiana's antagonist properties against various fungi

In this study, the antagonistic effects of the entomopathogenic fungus Beauveria bassiana 01YA strain against various phytopathogenic fungi were investigated. Dual culture tests showed that B. bassiana inhibited mycelial growth of the tested phytopathogenic fungi such as Fusarium oxysporum, F. equiseti, F. redolens, F. solani, Sclerotinia minor, S. sclerotiorum, Verticillium dahliae and Phytophthora cryptogea, showed high inhibitory effect against them and inhibited their growth by producing cell wall degrading chitinase and protease enzymes. In addition, B. bassiana 01YA strain showed high proteinase and amylase activities, while cellulase activity. It was found that B. bassiana 01YA formed significant antagonist borders to T. pleuroticola 51YA and Clonostachys rosea 51YAG isolates, while other Trichoderma species formed antagonist borders at lower levels. In conclusion, the combined use of B. bassiana and Trichoderma species can improve biological control and promote sustainable practices by reducing chemical use in agriculture.