Figure 5.

Partitioning of ¹⁴C into neutral (A), acidic (B), and basic (C) compounds in Arabidopsis roots (solid bars) and shoots (hatched bars) in the wild-type Ws-2 (gray bars) and pig1-1 (white bars) after a 6-h pulse with [¹⁴C]Phe. These data were obtained by separating ethanol extracts resulting from the uptake and transport assay (Fig. 5) by ion-exchange chromatography. For simplicity, only experimental data for plantlets grown on half-strength MS, 0.5% Suc plates with 1 mm Phe are shown. The incorporation into insoluble fractions was negligible. Each bar represents the mean values ± sd of three independent replicates. Significant differences (P < 0.02) are indicated above the error bar (b).