Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12866-016-0849-6/MediaObjects/12866_2016_849_Fig3_HTML.gif)
Survival rate of M. alhagi after H2O2 treatment. Wild-type (WT), ΔprkA (prkA deletion mutant), and CΔprkA (complement of ΔprkA) bacterial cells were grown to OD600 ≈ 0.8 in TY broth medium, adjusted to OD600 ≈ 0.1, and then treated with 10 mM H2O2 for 30 min or incubated without H2O2 in otherwise identical conditions as a control. The percentage survival rate of the three stains was calculated as follows: [(CFU per ml after treatment with H2O2)/(CFU per ml before treatment with H2O2)] × 100. Data shown are the means of three independent experiments and the error bars indicate standard deviations. The significance of differences is shown at the P < 0.05 level (t-test). Different lowercase letters mean significant difference between two columns