Figure 7.

Inhibition activity of the lipopeptide extract of Bacillus amyloliquefaciens DHA55 against the mycelial growth of different pathogenic fungi. A total of 60 µL in volume of the lipopeptide extract (LE) was added into the right and left wells in potato dextrose agar plates, while 60 μL of dimethyl sulfoxide (CK) was added to the upper and lower control wells. Culture discs (5 mm in diameter) of the tested fungi were placed at the center of the plate. (A) Growth of the tested fungi. Fon, Fusarium oxysporum f. sp. nevium; Db, Didymella bryoniae; Fg, Fusarium graminearum; Ss, Sclerotinia sclerotiorum; Rs, Rhizoctonia solani. (B) The inhibition zone (mm) of the lipopeptide extract against the tested fungi. (C) The inhibition activity for varying levels of lipopeptide extract against Fon growth. The results in (A) are from an experiment that was performed independently three times with similar results. The data presented in (B,C) are the means ± standard deviation from three independent experiments. Different lowercase letters in the columns indicate significant differences at the p-value < 0.05 level according to the one-way analysis of variance test.