Fig 4.

Effect of root endophytic bacterial strains on Fusarium culmorum mycelial growth in dual confrontation assay (A), and qualitative assay of extracellular enzyme production (B). Dual confrontations and biochemical analyses were recorded after 5 days of incubation at 28°C. Data correspond to the mean of a minimum of four repetitions ± SE. Different letters above data show significant differences within rows (p ≤ 0.05). The symbols “+” and “-” correspond to a qualitative assessment of the recorded activities (“+”, positive; “-” negative activity). Scale bars represent 1 cm. An enlarged version of the photographic images is available in S3 Fig.