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Effects of different concentrations (10, 20, 30 and 40 μg/mL) of PCA on biofilm formation in R. solanacearum. Cells were treated with DMSO alone at a final concentration of 1% (DMSO treatment), sterile water (Untreated) and PCA at a final concentration of 10, 20, 30 and 40 μg/mL (PCA treatments). Experiments were incubated for 12, 24 and 36 h at 30 °C without shaking.
