Fig. 5

Growth patterns of Wt and the Δzl mutant in photoautotrophic cultivation (ambient air). The carbon source was supplied by naturally dissolved air during agitating. Cell growth was measured under 50 ± 5 µmol photons m⁻² s⁻¹ (a), 100 ± 10 µmol photons m⁻² s⁻¹ (b), 250 ± 30 µmol photons m⁻² s⁻¹ (c), and 500 ± 50 µmol photons m⁻² s⁻¹ (d). The long-term experiment at 500 ± 50 µmol photons m⁻² s⁻¹ was displayed in the box. All the experiment was performed in biological replicates (n > 2). Statistical analysis was performed using Student’s t test (*p < 0.05)