Scanning electron micrographs (SEM) of pathogen-bacterial interaction during antagonism assay against F. udum in dual culture. a, b Images of F. udum from control plate (c, d) in dual culture with Streptomyces sp. S-9 (MK158952). Mycelial abnormality is observed along with a coagulation of cytoplasm, b mycelial shredding and shrinking, c leakage of cytoplasm and mycelial breakage, and d Perforation, breakage, and shrinking, as compared to growth in the absence of antagonistic agent Streptomyces sp. S-9 (MK158952)