Table I. Oxygen exchange rates of wild-type and mutant cells.

Rates are in µmol oxygen mg⁻¹ Chl h⁻¹. Values are means ± sd, n = 3 to 5. Asterisks indicate statistically significant differences compared with the wild type (P < 0.05). N/A, not applicable.

Conditions	Parameters	Components	Wild Type	∆cyd	∆cox	∆cox/cyd
Control	Oxygen uptake	Dark	8.3 ± 1.2	5.1 ± 0.8*	3.5 ± 0.5*	0.3 ± 0.2*
		Light induced	26.3 ± 6.9	35.3 ± 8.3*	38.4 ± 5.5*	24.7 ± 3.0
		Total light	34.6 ± 6.7	40.5 ± 7.5	41.5 ± 5.1*	24.9 ± 3.0
	Oxygen production	Gross	193.3 ± 20.1	190.7 ± 26.4	190.25 ± 18.1	184.9 ± 21.5
		Net	158.6 ± 19.3	150.3 ± 19.2	148.7 ± 15.1	159.6 ± 22.5
DBMIB	Oxygen uptake	Dark	10.1 ± 1.5	13.1 ± 1.3	12.8 ± 3.1	9.3 ± 1.3
		Light induced	11.6 ± 2.3	N/A	7.9 ± 0.6 *	N/A
		Total light	21.5 ± 2.8	7.0 ± 0.8*	20.7 ± 2.5	7.7 ± 1.9*
	Oxygen production	Gross	24.2 ± 3.1	5.5 ± 1.3*	19.8 ± 3.8*	2.75 ± 0.4*
		Net	2.9 ± 0.2	N/A	N/A	N/A
DBMIB + HQNO	Oxygen uptake	Dark	12.9 ± 0.3	11.3 ± 3.5	10.9 ± 3.9	10.2 ± 0.2*
		Light induced	N/A	N/A	N/A	N/A
		Total light	12.3 ± 0.6	7.0 ± 1.1	10.8 ± 3.4	9.8 ± 0.5