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).

Parameter	Component	Wild Type	ΔndbC
Oxygen uptake	Dark	2.8 ± 0.2	2.3 ± 0.2
	Light induced	17.7 ± 0.5	20.6 ± 0.5*
	Total light	20.4 ± 0.4	22.9 ± 0.3*
Oxygen production	Gross	176.5 ± 5.4	161.5 ± 2.5*
	Net	156.1 ± 4.9	138.6 ± 2.2*
CO2 uptake	Fast phase	754.7 ± 34.5	613.7 ± 40.9*
	Steady state	171.6 ± 4.9	166.3 ± 6.0