Fig 5. Effects of the flavodoxins on P. xenovorans survival after exposure to oxidizing agents paraquat and H₂O₂ in liquid medium.

Exponentially grown cells were exposed to paraquat or H₂O₂ (1 and 20 mM) for 1 h. Aliquots were taken to determine colony-forming units (CFU). The percentage of survival was determined as the ratio of cells exposed to oxidizing agents and untreated cells. Significant differences were determined with a Tukey Test (p<0.05) as indicated. Each CFU value is an average ± SD of at least three independent experiments.