Table 2.

Photosynthetic parameters estimated by fitting a hyperbolic tangent to the gross O₂ production rate per PSII and the gross O₂ production rate per cell. Standard errors are indicated by bracketed values

Parameter	Wildtype		PAL mutant
	Orange-red	Blue	Orange-red	Blue
O2 production per PSII (mol O2 mol PSII−1 s−1)
α	2.32 (0.43)	0.11 (0.00)	0.14 (0.01)	0.20 (0.01)
Pmax	94.2 (3.1)	50.1 (3.5)	33.6 (1.3)	32.6 (1.0)
O2 production per cell (fmol O2 cell−1 min−1)
α	5.1 × 10−3 (9.6 × 10−4)	1.0 × 10−3 (0.3 × 10−4)	1.0 × 10−3 (0.4 × 10−4)	1.6 × 10−3 (0.7 × 10−4)
Pmax	0.209 (0.007)	0.446 (0.032)	0.237 (0.009)	0.265 (0.008)