FIG 2.

Effects of H₂S, H₂O₂, and both together on the growth of the S. oneidensis Δpenta mutant. Mid-log-phase cultures were inoculated into LB medium containing the chemicals indicated and incubated statically at 30°C in 24-well plates. (A) Effect of H₂S (from NaHS) on growth. (B) Effects of 0.1 mM H₂S, 1 mM H₂O₂, and both on the growth of the Δpenta mutant strain. T₀, T₁₀, T₂₀, and T₃₀ represent the addition of H₂O₂ at the same time as H₂S and 10, 20, and 30 min later, respectively. In both panels A and B, -- represents the LB control. Data are reported as the mean ± SD (n = 4).