Figure legends
Fig. 1 Effects of reductants on biomass, hemolytic activity and biofilm formation in WH1. A: Effects of glucose on cell growth (left panel) and surfactin production (right panel) in WH1; B:Effects of glucose on genes transcription in WH1; C: Effects of glucose on biofilm formation in WH1; D: Effects of glucose on biofilm formation in ΔsrfA; E :Effects of glucose on PerR expression in WH1.
Fig. 2 Effects of oxidants on biomass, hemolytic activity and biofilm formation in WH1. A: Effects of H2O2 on cell growth (left panel) and surfactin production (right panel) in WH1; B: Effects of H2O2 on biofilm formation in WH1;C: Effects of H2O2 on biofilm formation in ΔsrfA ; D: Effects of H2O2 on genes transcription in WH1;
E: Effects of H2O2 on PerR expression in WH1.
Fig. 3 Effects of reductants on biomass, hemolytic activity and biofilm formation in Δspx . A:Colony morphology and biofilm formation. C-Δspx : thespx -complementary strain. B: Growth (left panel) and hemolytic activity (right panel). C: Genes transcription (left panel) and PerR expression (right panel). D: Effects of glucose on cell growth (left panel) and surfactin production (right panel); E: Effects of glucose on genes transcription.;F: Effects of glucose on biofilm formation; G : Effects of glucose on PerR expression.
Fig. 4 Effects of oxidants on biomass, hemolytic activity and biofilm formation in Δspx . A:Effects of H2O2 on cell growth (left panel) and surfactin production (right panel); B: Effects of H2O2 on genes transcription ;C: Effects of H2O2 on biofilm formation; D: Effects of H2O2 on PerR expression.
Fig. 5 Effects of reductants on biomass, hemolytic activity and biofilm formation in ΔperR . A:Colony morphology and biofilm formation. C-ΔperR : theperR -complementary strain. B: Growth (up-left panel), hemolytic activity (up-right panel) and genes transcription (down panel). C: Effects of glucose on cell growth (left panel) and surfactin production (right panel); D: Effects of glucose on genes transcription; E: Effects of glucose on biofilm formation.
Fig. 6 Effects of oxidants on biomass, hemolytic activity and biofilm formation in ΔperR . A: Effects of H2O2 on cell growth (left panel) and surfactin production (right panel); B: Effects of H2O2 on genes transcription; C:Effects of H2O2 on biofilm formation.
Fig. 7 Phenotype and hemolytic activity in Δrex and ΔsigB . A: Colony morphology and biofilm.B: Growth curves. C: Hemolytic activity. Left: knockout strains; Right: the rex -complementary strain.D : Genes transcription (left panel) and PerR expression (right panel) in Δrex and ΔsigB .