Table I. Various parameters in the wild type and in the different LCAA antisense lines.
Plants were grown in the greenhouse at approximately 250 µE m−2 s−1 actinic light intensity. All measurements were performed on the youngest fully expanded leaves of plants at the onset of flowering. For each antisense line, a minimum of four plants were measured, and data were subjected to one-way ANOVA using a pairwise multiple comparison procedure (Holm-Sidak method) in SigmaPlot. Boldface values are significantly different from the wild type.
| Parameter | Wild Type | LCAA1 | LCAA2 | LCAA3 | LCAA4 |
|---|---|---|---|---|---|
| Chlorophyll a/b ratio | 3.92 ± 0.07 | 6.26 ± 0.41 | 7.47 ± 1.12 | 8.95 ± 1.36 | 15.38 ± 5.27 |
| Chlorophyll content (mg m−2) | 469.3 ± 14.8 | 255.5 ± 16.1 | 130.9 ± 33.3 | 87.2 ± 19.7 | 58.5 ± 8.5 |
| Leaf absorptance (%) | 90.9 ± 0.9 | 90.9 ± 1.2 | 82.9 ± 2.9 | 71.1 ± 0.4 | 65.1 ± 9.8 |
| Maximum quantum efficiency of PSII in the dark-adapted state | 0.80 ± 0.01 | 0.81 ± 0.01 | 0.80 ± 0.01 | 0.79 ± 0.01 | 0.78 ± 0.01 |
| Assimilation capacity (µmol CO2 m−2 s−1) | 25.5 ± 3.8 | 26.8 ± 2.0 | 26.2 ± 1.9 | 24.7 ± 2.1 | 25.4 ± 3.7 |
| Assimilation at 250 µE m−2 s−1 (µmol CO2 m−2 s−1) | 15.8 ± 2.1 | 10.4 ± 0.6 | 9.6 ± 0.5 | 7.7 ± 1.3 | 6.3 ± 0.5 |
| Respiration (µmol CO2 m−2 s−1) | −1.2 ± 0.5 | −1.2 ± 0.2 | −1.0 ± 0.1 | −1.0 ± 0.1 | −0.9 ± 0.1 |
| Quanta per CO2 | 12.4 ± 1.9 | 16.7 ± 1.0 | 18.6 ± 1.4 | 23.6 ± 6.6 | 28.2 ± 5.5 |