Antagonistic activity by Bacillus sp. strain 11.1 against fungal pathogen M. phaseolina in dual culture assay on PDA/TSA (A). Normal sclerotia formed by M. phaseolina (400×) (B) and (1000×) (C). Abnormal sclerotia lacking black pigmentation and smaller size (black arrows) in comparison with the control (400×) (D) and (1000×) (E). Images of the antagonistic assay were obtained by microscopy using an inverted Nikon microscope (Eclipse TI-S) with NIS-Elements software.