Figure 4.

Survival assays of PsJN and its derivatives under desiccation (A) and UV damage (B) stresses. Colonies of the wild type PsJN and the ΔbceQ mutant were cultured on filter papers on top of a ½ PDA plate. The bacterial colonies were cultured for 3 days, removed from the culture plates, and used in the desiccation assay (A) and the UV stress assay (B). Data represent the mean values collected from a total of 12 colonies (4 colonies per filter paper × 3 filter papers per strain) for the tested strain at each time point. Error bars show standard deviations. * Indicates significant difference, as determined by t-test (p < 0.05). The experiments were repeated two times independently.