Fig. 1: Impact of elevated CO2 on the pyridine dinucleotide status in ‘Empire’ apple fruit under low-temperature/low-O2 storage for up to 16 weeks.

Panels a-i represent time-course profiles for NADP+, NADPH, NAD+, NADH, NAD(H), NADP(H), NAD(P)(H), NADPH/NADP+ and NADH/NAD+, respectively. Storage conditions: 0 °C, 2.5 kPa O2 and 5 kPa (●) or 0.03 kPa (○) CO2. All the data represent the mean of four treatment replicates, each being the average of three to four subsamples. The error bar below 0 week represents the least significant difference at the P ≤ 0.05 level. Note that the y-axis varies among the panels. NAD+/NADH oxidized/reduced nicotinamide dinucleotide, NADP+/NADPH oxidized/reduced nicotinamide dinucleotide phosphate, NAD(H) total oxidized/reduced nicotinamide dinucleotide, NADP(H) total oxidized/reduced nicotinamide dinucleotide phosphate, NAD(P)(H) total oxidized/reduced nicotinamide dinucleotide (phosphate)