Fig. 3

Contribution of σ factor to biofilm formation of B. velezensis 118. Representative images show pellicle structure in LBGM medium (A) and colony architecture morphology on LBGM plates (B) after 24 h incubation at 30 °C. The strains tested include B. velezensis 118 (WT) and its derived mutants: sigM::erm, sigX::erm, sigW::cat, sigV::kan, and ylaC::cat. Scale bar, 5 mm.