Figure 5.

Decarboxylation of 12.5 mm [4-¹⁴C]malate by BS strands at a PPFD of 200 μmol m⁻² s⁻¹ (white bars) or in the dark (black bars). The incubation medium for the control treatment contained 1 mm Mn²⁺ and 1 mm Mg²⁺. For the other treatments, 10 mm ATP, 10 mm NAD, 10 mm Asp, 5 mm 3-phosphoglycerate (PGA), or 400 μm MPA was added or, in one treatment, Mn²⁺ was omitted. Data are means ± se of three assays.