Table I. Photosynthetic parameters of the wild type and ΔpsaI.

Parameter	Wild Type (n ≥ 5)a	ΔpsaI-1 (n ≥ 5)
Chlorophyll a+bb	0.42 ± 0.04	0.41 ± 0.06
Foc(dark incubation)d	0.059 ± 0.008	0.073 ± 0.004
ΦPSIIe (dark incubation)	0.77 ± 0.01	0.75 ± 0.01
Fv/Fmf (dark incubation)	0.82 ± 0.01	0.79 ± 0.01
Fv/Fm (far-red incubation)g	0.81 ± 0.01	0.81 ± 0.01
qTh	0.17 ± 0.02	0.17 ± 0.02
t1/2 P700 redi	1.45 ± 0.17	0.99 ± 0.18
Postillumination fluorescence risej	1.00 ± 0.35	2.59 ± 0.76
PSI activityk	127.3 ± 14.0	129.9 ± 17.9
Linear electron transport rate (H2O→MV)l	144.1 ± 3.2	145.8 ± 2.5
NADP+ photoreduction ratem	0.240 ± 0.027	0.234 ± 0.008

^aNumber of replicates.

^bµg Chlorophyll × mm⁻².

^cDark fluorescence yield.

^dPlants were dark-adapted for 15 min prior to measurement.

^eEffective quantum yield of PSII.

^fF_v/F_m, Maximum quantum yield of PSII.

^gPlants were adapted to far-red light for 1 h prior to F_v/F_m measurement.

^hState transition coefficient.

ⁱHalf-time of nonphotochemical P700 re-reduction in the dark (s).

^jNomalized to the wild type, s⁻¹.

^kMeasured as electron flow from N,N,N’,N’-tetramethyl-p-phenylenediamine to methylviologen, µmol O₂ mg chlorophyll⁻¹ × h⁻¹.

^lMeasured as electron flow from water to methylviologen, µmol O₂ mg chlorophyll⁻¹ × h⁻¹.

^mmmol NADP⁺ × h⁻¹ × mg chlorophyll⁻¹.