Soybean Lectin Enhances Biofilm Formation by Bradyrhizobium japonicum in the Absence of Plants

Figure 3

Optical density at 570 nm indicating biofilm formation in the microtiter plate assay by B. japonicum wild type strain USDA 110 or the EPS-defective derivative mutant ΔP22 with or without 300𝜇g mL⁻¹ SBL at the indicated incubation times. In the inset the treatments without SBL are shown with a different scale in the ordinate axis for a better appreciation of the differences between USDA 110 and ΔP22.