Figure 5
Survival curves to “environmental” UV radiation (UV-A + UV-B). For this more accurate representation of the solar UV found in the troposphere, P. syringae pv. syringae 281 and P. syringae pv. garcae 158 suffered a decrease in viability of less than 90% after 60 minutes of exposure, from an initial population of ~5 × 106 cells/ml. Meanwhile, LB-grown E. coli presented a 1,000-fold reduction in survival from its initial numbers of ~5 × 107 cells/ml. When grown in LNP , the minimal medium used for the P. syringae strains, E. coli was even more sensitive, with a drop in viability after the full exposures of almost 5 logs (from about 107 cells/ml in this case). Error bars denote standard deviations of the means (n = 3).
