Figure 4

Surfactin (a) and iturin (b) production by Bacillus sp. Kol L6 in the cultivations containing individual pollutants: 2,4-D; MET or MP or pollutant mixtures. The results are shown as a percentage of biotic control data. Legend: white square—without pollutants, light grey square—addition of one pollutant, dark grey square—addition of two pollutants, black square—addition of three pollutants. The significance of the differences between the samples was determined according to ANOVA test (p ≤ 0.05).