Table II. Gas-exchange rates of wild-type and ΔndbC cells grown in LC

The oxygen exchange rates are shown as µmol oxygen mg−1 Chl h−1 and CO2 uptake rates as µmol CO2 mg−1 Chl h−1. Values are means ± sd; n = 3. Asterisks indicate statistically significant differences between the wild type and the ΔndbC mutant (P < 0.05).

ParameterComponentWild TypeΔndbC
Oxygen uptakeDark2.8 ± 0.22.3 ± 0.2
Light induced17.7 ± 0.520.6 ± 0.5*
Total light20.4 ± 0.422.9 ± 0.3*
Oxygen productionGross176.5 ± 5.4161.5 ± 2.5*
Net156.1 ± 4.9138.6 ± 2.2*
CO2 uptakeFast phase754.7 ± 34.5613.7 ± 40.9*
Steady state171.6 ± 4.9166.3 ± 6.0