FIG. 3.

(A) Evolution of strain WN624 to enhanced growth at 5 kPa. (B) Evolution of strain WN628 to enhanced growth at atmospheric pressure (∼101.3 kPa). In both panels, the optical density (Klett units) of 24-h cultures was monitored. Data points represent the averages and standard deviations of daily culture OD₆₆₀ values grouped at 1-week (∼50-generation) intervals. Data points linked by horizontal lines beneath lowercase letters indicate groups of data that were not significantly different by ANOVA (P > 0.05; n = 7).