Table 2. Oxygen Evolution Rates of Wild-Type and flv Mutant Cells Measured with Different Electron Acceptors.
Oxygen Evolution (μmol O2 mg-1 Chlorophyll h−1) |
|||
---|---|---|---|
Strain and Growth Conditions | Water to CO2 | Water to DCBQ | Water to DMBQ |
High CO2 | |||
The wild type | 414 ± 27 | 1156 ± 35 | 849 ± 19 |
Δflv2 | 443 ± 20 | 1048 ± 11 | 854 ± 10 |
Δflv4 | 411 ± 30 | 1197 ± 16 | 870 ± 09 |
Air level of CO2 | |||
The wild type | 437 ± 15 | 547 ± 12 | 663 ± 12 |
Δflv2 | 485 ± 18 | 504 ± 11 | 482 ± 17 |
Δflv4 | 444 ± 10 | 508 ± 10 | 457 ± 21 |
Steady state oxygen evolution (μmol O2 mg-1 chlorophyll h−1) was measured by O2 electrode under saturating light. The cells grown under high (3%) or air level of CO2 were suspended in the growth medium. The measurements were performed in the presence of 10 mM NaHCO3. The results are presented as a mean ± sd from three independent cultures and four measurements from each culture.