Table I.

Plant growth characteristics

Treatment	PH	ST	LA	FW	Chl	Chl a/b	Protein
HL
WT	69.37 ± 3.81	1.56 ± 0.09	499.13 ± 71.29	13.41 ± 1.91	0.37 ± 0.030	3.70 ± 0.13	1.55 ± 0.10
FtsZ	36.56 ± 6.65	1.22 ± 0.15	341.22 ± 89.74	9.09 ± 2.54	0.27 ± 0.006	4.22 ± 0.12	1.54 ± 0.16
GUS	60.12 ± 5.54	1.57 ± 0.15	516.17 ± 50.95	13.87 ± 1.36	0.36 ± 0.003	3.65 ± 0.14	1.49 ± 0.20
ML
WT	48.23 ± 5.01	0.85 ± 0.09	200.75 ± 47.02	4.89 ± 1.14	0.31 ± 0.010	3.30 ± 0.05	1.23 ± 0.02
FtsZ	40.24 ± 3.23	0.80 ± 0.06	186.88 ± 33.72	4.53 ± 0.82	0.30 ± 0.009	3.47 ± 0.01	1.40 ± 0.09
GUS	47.40 ± 3.50	0.86 ± 0.07	218.44 ± 55.08	5.32 ± 1.34	0.33 ± 0.011	3.43 ± 0.02	1.19 ± 0.01
LL
WT	29.20 ± 5.05	0.47 + 0.09	110.21 ± 17.73	2.47 ± 0.39	0.20 ± 0.005	2.91 ± 0.02	0.48 ± 0.04
FtsZ	8.80 ± 3.14	0.28 ± 0.06	42.27 ± 14.22	0.92 ± 0.33	0.19 ± 0.005	2.98 ± 0.05	0.48 ± 0.05
GUS	26.62 ± 9.63	0.48 ± 0.08	92.10 ± 20.42	2.07 ± 0.45	0.20 ± 0.004	2.99 ± 0.01	0.52 ± 0.05

PH, Plant height (cm). ST, Stem thickness (cm). LA, The youngest fully expanded leaf size (estimated by leaf area, cm²). FW, Fresh wt (g⁻¹ leaf of the youngest fully expanded leaf. Chl a/b, Chlorophyll a/b ratio. Chl, Chlorophyll content (mmol m⁻²). Protein, The soluble protein content (g m⁻²). Chl a/b, Chl and protein were measured on the fully expanded leaves, third to fifth from the apex of the plants. WT, Wild-type plants. FtsZ, Average of three independent FtsZ1-2 overexpressed transgenic tobacco plants. GUS, GUS-expressed transgenic tobacco plants. HL, High light (700–1,500 μmol photons m⁻² s⁻¹). ML, Medium light (200–400 μmol photons m⁻² s⁻¹). LL, Low light (30–150 μmol photons m⁻² s⁻¹). Mean values (±se) for eight to 15 plants are shown.