Figure 4

The effect of prophage on stress-related phenotypes. Survival for DE456 and DE456Δphi456 after challenging with A osmotic stress (2.4 M NaCl for 30 min), B oxidative stress (30 mM H2O2 for 15 min), C acid stress (pH 3 for 30 min) and D heat stress (65 °C for 10 min). Data are the mean of 3 replicates ± SD. Error bars indicate standard deviations. Student’s t-test was used to analyse the data.