Fig. 4. Compartment-specific marker distributions in NAF gradient from three growth stages of apple fruit (30, 93, and 149 d after full bloom).

The distribution of plastidic (starch, gray), cytosolic (UGPase, white), and vacuolar (flavonoids, black) markers is shown as the average of three independent biological replicates expressed as a percent of the total (±SE). The mean distribution of flavonoids was used as a vacuolar marker