2.2. Screening for bacteria producing volatile antimicrobials
All of the bacteria isolated from soil were tested for antagonistic
activity in two-compartment plastic plates (Kai et al., 2007). Forthe fumigation assay against C. gloeosporioides, the PDA medium
was poured into one side of the plates (92 16 mm; Sarstedt AG,
Nürnbrecht, Germany) and the NA medium was poured into the
opposing sector. Each isolated bacteria (50 lL; 1 106 cfu mL1)
was innoculated on the NA medium side of the plate and incubated
for 1 day at 37 C. Subsequently, an agar plug (U 5 mm) of C. gloeosporioides
was placed on the PDA sector. Sterile distilled water was
used as the control factor instead of the isolated bacterial. The
plates were sealed with parafilm, incubated for 5 days at 28 C
and the diameter of C. gloeosporioides expansion was measured.
Each experiment was performed with three replications and the
experiment was repeated three times.