Effectives of Bacillus velezensis UTB96 on reduction of zearalenone produced by Fusarium graminearum isolated from wheat

Wheat is exposed to various fungal pathogens especially Fusarium and their mycotoxins. Zearalenone as estrogenic toxin is one of the most popular toxin produce by the fungal agent of wheat head blight disease (Fusarium graminearum). Due to zearalenone contamination in wheat and wheat-based foods and its dangers to human and animal health, various physical, chemical and biological measures have to be established to reduce or prevent the zearalenone contamination. F. graminearum isolate obtained from cereal pathology department of seed and plant improvement institute was selected for further studies. Based on High-performance liquid chromatography (HPLC) analysis, Fusarium graminearum isolate could produce zearalenone. Biological experiments showed Duel-Culture of Bacillus velezensis UTB96 and Fusarium graminearum isolate decreased the fungal growth to 40 percent, as well as supernatant supplied from Bacillus velezensis UTB96 decreased the fungal growth to 54.5 percent. Bacillus velezensis UTB96 strain could decrease the zearalenone to 79 percent but B. velezensis UTB1strain had not any difference at 1% level to reduce the zearalenone toxin. The results showed Bacillus velezensis UTB96 strain capable to moderate the growth of Fusarium head blight and zearalenone contamination in wheat.