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Table 2 Pigment contents of Synechocystis 6803 wild-type and mutants. Data before and after nitrogen starvation for 3 days at 80 μmol m-2s-1 as described in Experimental Procedures. Pigment concentrations and cell densities were estimated from absorption spectra. Values given are the means of three replicates, with standard deviations. Asterisks indicate pigment concentrations that were too low to be accurately determined. All media contained glucose.

From: The influence of acetyl phosphate on DspA signalling in the Cyanobacterium Synechocystis sp. PCC6803

Strain Chlorophyll/Cell (molecules × 106) Phycocyanin/Cell (molecules × 106) Chlorophyll/phycocyanin
  +nitrate -nitrate +nitrate -nitrate +nitrate -nitrate
Wild-type 13.6 ± 2.1 * 5.6 ± 1.4 * 2.4 ± 0.1 *
pta 12.6 ± 0.4 * 4.6 ± 1.5 * 2.7 ± 0.1 *
dspA 13.8 ± 0.1 * 5.9 ± 0.5 * 2.4 ± 0.1 *
pta/dspA 15.8 ± 0.9 7.8 ± 0.5 5.9 ± 0.5 1.0 ± 0.2 2.7 ± 0.2 7.8 ± 2.3