FIG 3.

Effect of bacillomycin D on the morphology of F. graminearum PH-1 hyphae and conidia. (A) Effect of 9 μg/ml bacillomycin D on the morphology of F. graminearum PH-1 hyphae and conidia observed with a light microscope. (B and C) Ultrastructural effects of 30 μg/ml bacillomycin D on F. graminearum PH-1 after 12 h, as determined by scanning electron microscopy (B) and transmission electron microscopy (C). CW, cell wall; cy, cytoplasm; pm, plasma membrane; S, septum. In all of the experiments, 6.67% (vol/vol) methanol served as the control (CK).