Fig. 3.

Photosynthetic responses of WT and transgenic plants grown in high light in the greenhouse. Photosynthetic carbon fixation rates were determined as a function of increasing CO₂ concentrations (A/C _i) at saturating-light levels in developing leaves (11–13cm in length) and fully expanded (leaf 8) from WT and transgenic plants. (a, c, e) Developing leaves; (b, d, f) fully expanded leaves. Plants were grown in natural light conditions in the greenhouse, light levels were between 600 and 1500 μmol m^–2 s^–1 (supplemental light maintain a minimum of 600 μmol m^–2 s^–1). White circles, WT plants (n=6); black circles, SBPase over-expressing plants (n=8) (Lefebvre et al., 2005). Values are from 12–16 individual plants from 3–4 independent transgenic lines.