Fig. 2.

a Inhibition of F. solani mycelial growth (diameter in cm) by bacterial isolates. Mean values are shown with standard error. * indicates significant difference relative to control (c at the extreme right of each plot) (Kruskal–Wallis’s test p ≤ 0.01). b Principal component analysis (PCA) of the volatile compounds of the Bacillus S18 strain on day zero, 3, 4, and 5 (D0, D3, D4, D5). Some compounds were present in cultures of bacteria alone (B), fungus alone (F), or both together (BF). c Heatmap of the compounds abundance found in each treatment of the same strain at times D0, D3, D4, and D5. Green corresponds to the highest abundance, black medium and red, to the lowest