TABLE 1.
Cellular pigment and membrane content and photosynthetic activity of WT and Δslr1796 mutant cells
All measurements are shown as the result for 1 × 108 cells. Errors represent the standard deviation of at least three independent biological samples. MV, methyl viologen; Asc, sodium ascorbate; DAD, diaminodurene; DCBQ, 2,6-dichloro-p-benzoquinone.
| Chl | PC | PC/Chl | Membrane protein | Photosynthetic activitya |
|||
|---|---|---|---|---|---|---|---|
| Net (H2O→CO2) | PSII (H2O→DCBQ/FeCN) | PSI (Asc/DAD→MV) | |||||
| μg | μg | μg | μmol of O2·108 cells·h−1 | ||||
| WT | 2.6 ± 0.2 | 22.3 ± 1.6 | 8.6 ± 0.6 | 58.9 ± 0.9 | 0.9 ± 0.1 | 1.1 ± 0.1 | −0.62 ± 0.04 |
| Δslr1796 | 0.7 ± 0.1 | 21.7 ± 0.8 | 31.0 ± 0.9 | 35.3 ± 0.7 | 0.6 ± 0.1 | 1.3 ± 0.2 | −0.40 ± 0.03 |
a Determined with independent biological cell samples from those used for pigment and protein quantification.