Table 1.

Comparison of growth rates, photosynthetic electron transport rates, and photosystem II content, of wild-type and T363 strains of Synechocystis 6803 grown in the presence of glucose

Parameter	WT	T363
Doubling times*, h	6.2	6.5
Electron transport rate†	370 ± 30	350  ± 10
Relative PSII content‡	1.00	0.79  ±  0.14

WT, wild type; PSII, photosystem II. 

^*Data from Fig. 3. 

^†Rate of oxygen evolution (μmol of O₂ per mg of chlorophyll per h) measured in the presence of bicarbonate. Values are the average ± SD of three or more measurements. Cells were grown at a light intensity of 25 μE per m² per s. 

^‡Relative photosystem II content was estimated by the ratio of the variable fluorescence divided by the maximum fluorescence [(F_max − F₀)/F_max] (24). The average value of F_v/F_m was 0.44 for WT cells and 0.35 for cells of T363. Cells were grown at a light intensity of 25 μE per m² per s.