Table II. Diurnal dynamics of identified enzyme parameters represented in the model.

Values of K_m and K_i are given in mm. The unit of maximum enzyme activity (V_max) is μmol h⁻¹ g⁻¹ fresh weight. Asterisks indicate significant differences from the wild type (* P < 0.01, ** P < 0.001).

Genotype	Reaction	Parameter	Time
			9 am	1 pm	5 pm	9 pm	1 am	5 am
Col-0	rSP→Suc	Vmax	27.9 ± 1.8	27.1 ± 1.4	21.9 ± 2.2	12.2 ± 1.3	4.8 ± 0.3	0.4 ± 0.2
	Km: 0.53 ± 0.082
	rSuc→Hex	Vmax	68.3 ± 8.1	155.5 ± 12.0	141.6 ± 12.1	99.9 ± 7.5	70.2 ± 5.5	68.0 ± 6.9
	Km: 11.7 ± 1.21
	Ki,Glc: 0.01 ± 0.001
	Ki,Fru: 0.78 ± 2.29
	rFru→SP	Vmax	3.5 ± 0.5	3.6 ± 0.6	7.9 ± 1.3	8.0 ± 1.3	8.1 ± 1.4	4.1 ± 0.5
	Km: 0.8 ± 0.075
	Ki: 1.97 ± 0.31
	rGlc→SP	Vmax	6.1 ± 1.0	6.2 ± 1.7	12.4 ± 2.6	12.9 ± 2.8	10.27 ± 2.3	4.83 ± 0.9
	Km: 0.1 ± 0.02
	Ki: 0.14 ± 0.03
inv4	rSP→Suc	Vmax	23.1 ± 1.0*	21.9 ± 1.0*	17.0 ± 1.2*	12.3 ± 1.3	3.0 ± 1.1*	3.9 ± 6.8
	Km: 0.27 ± 0.02
	rSuc→Hex	Vmax	12.9 ± 0.2**	12.9 ± 0.2**	15.0 ± 0.001**	17.0 ± 1.8**	11.8 ± 1.3**	11.0 ± 0.001**
	Km: 8.12 ± 2.74
	Ki,Glc: 0.07 ± 0.06
	Ki,Fru: 1.9 ± 4
	rFru→SP	Vmax	5.8 ± 1.8*	4.4 ± 1.2*	9.5 ± 2.8	8.8 ± 2.6	7.1 ± 2.5*	4.9 ± 1.6
	Km: 1.17 ± 0.27
	Ki: 2.16 ± 0.47
	rGlc→SP	Vmax	6.0 ± 1.8	5.2 ± 1.5*	9.5 ± 2.8*	7.9 ± 2.4*	6.7 ± 2.3*	4.5 ± 1.5
	Km: 0.08 ± 0.02
	Ki: 0.147 ± 0.016