Table III.

Carbohydrate levels in leaves of three genotypes of transgenic plants compared to control plants

Leaf samples were harvested from 6-week-old plants after 5 h exposure to light. Concentrations are given in mmol m−2 hexose equivalents. The control (*) plants were alongside with NtSPSAi transgenic tobacco plants, and the control (**) plants were alongside with NtSPSCi and chiSPSi transgenic tobacco plants. Values represent the mean (±sd) from at least five different plants per line.

Plant LineGlcFruSucStarch
Control*1.76 ± 0.682.25 ± 0.331.88 ± 0.355.99 ± 1.48
NtSPSAi282.02 ± 0.912.22 ± 0.852.15 ± 0.385.44 ± 2.10
NtSPSAi411.05 ± 0.391.31 ± 0.411.53 ± 0.414.59 ± 1.31
NtSPSAi622.34 ± 0.681.96 ± 0.431.82 ± 0.366.92 ± 2.17
Control**1.98 ± 0.932.13 ± 0.862.18 ± 0.503.97 ± 1.68
NtSPSCi92.29 ± 0.922.36 ± 0.671.83 ± 0.5318.05 ± 14.64
NtSPSCi202.48 ± 0.762.55 ± 0.452.30 ± 0.4936.51 ± 14.31
NtSPSCi351.90 ± 0.762.37 ± 0.491.93 ± 0.5116.35 ± 8.23
chiSPSi81.14 ± 0.562.47 ± 1.061.19 ± 0.3432.15 ± 10.26
chiSPSi272.17 ± 0.882.43 ± 0.531.90 ± 0.3018.89 ± 8.19
chiSPSi302.07 ± 1.012.49 ± 0.661.40 ± 0.3236.90 ± 14.79