Fig 5.

(A) Cell survival assay for acquired thermotolerance in EcB and EcB1 complementation strains. Thermotolerance experiments and cell survival determinations were done as described in Figure 2. Shown are representative experiments from 3 independent replicas for each strain. (B) Quantification of thermotolerance developed in the EcB and EcB1 strains. Synechococcus complementation strains EcB (▪) and EcB1 (□) grown at 37°C were preheated at 48.5°C for 1.5 hours before the shift to 54°C for 15 minutes. Average numbers of viable cells after each temperature treatment are expressed as percentages of the value for the 37°C control (100%). All values are averages ± SE for 3 independent experiments