Figure 5. Remaining electron flow in Q_iKO devoid of Q-cycle sustains phototrophic growth with light enhanced oxygen sensitivity.

Cells were plated on minimal medium and grown for 10 days under 15 (a, b) or 45 (c, d) μE m⁻² s⁻¹ of light and a controlled atmosphere combining 2% CO₂ and 98% air (a, c) and or 98% N₂ (b, d) to test phototrophic growth. (e) Cells were plated on acetate medium as heterotrophic growth control at very low light fluences (1 μE m⁻² s⁻¹).