In the tests on PDA plates, different treatments exhibited different
inhibitory effects on A. flavus. The percentage of inhibition of culture
filtrate, washed cell suspension (1×108 CFU/ml) and unwashed cell
suspension (1×108 CFU/ml) reached 30.6±4.5, 35.1±4.8 and 21.7±
5.2, respectively. In contrast, the treatments of B. megaterium
including autoclaved culture and sterile distilled water as a control
did not inhibit the growth of A. flavus, because the growth reached the
edge of the plates. In the assay of spore germination, the washed cell
suspension of B. megaterium at 108 CFU/ml significantly suppressed
germination of A. flavus spores compared with the control (p