Fig. 1

Biofilm formation by an isogenic fabR mutant. The level of biofilm formation at the indicated temperatures is expressed as a percentage of wildtype SL1344 biofilm formation at the respective temperatures. The data are representative of three independent experiments (n = 3), with at least 4 replicates each. The error bars denote standard deviations between the independent experiments. For each temperature a one-sample t-test was performed to compare the mean biofilm formation of the mutant (expressed as a percentage of wildtype SL1344 biofilm formation) to 100 %. Significant changes (p-value <0.05) in the level of biofilm formation as compared to the wildtype at the same temperature are indicated with an asterix (*). SL1344: S. Typhimurium SL1344 wildtype strain; ∆fabR: S. Typhimurium SL1344 ∆fabR mutant (CMPG5624); ∆fabR-pFAJ1708-fabR trans complemented S. Typhimurium SL1344 ∆fabR mutant (pCMPG5678/CMPG5624)