Figure 2. The growth phenotype of WT and ΔndhV strains.

(A–D) Five microliters of the cell suspensions with the OD₇₃₀ nm values of 0.1, 0.01, and 0.001 were spotted on agar plates containing BG11 buffer at different pHs and grown at a low light (40 μmol photons m⁻² s⁻¹), high CO₂ (3% v/v) (A); low light, low CO₂ (0.04% v/v) (B); high light (300 μmol photons m⁻² s⁻¹) and high CO₂ (C); ligh light and low CO₂ (D) for five days. (E,F) Cell density of WT, ΔndhV , and M55 strains were measured at different times after grown at low light (40 μmol photons m⁻² s⁻¹) and low pH (pH 6.5) (E), or high light (300 μmol photons m⁻² s⁻¹) and low pH (pH6.5) (F), 2% CO₂ (v/v in air). Values are means ± SD (n = 3). Values are means ± SD (n = 3).