FIG. 3.

The balding effect of surfactin is overcome by addition of SapB and chaplin protein extract. SapB (left) and TFA-extracted chaplins (center) were added to nylon filters placed at the edge of the surfactin-inhibited bald zone. DMSO (right) was added as a control. Treatment with SapB restores aerial growth to an area within the surfactin-treated zone surrounding the filter strip. Treatment with the chaplin extract is weakly but detectably effective in overcoming surfactin-induced balding. The control strip (right) shows no effect on inhibition of aerial growth from surfactin treatment. Top, plate photographs; bottom, high magnification (×80).