Figure 3.

Biochemical analyses of ripe tomato fruits expressing OXDC. A, Decarboxylase activity shown as micromoles of CO₂ liberated per minute per milligram of protein at 37°C. B and C, Quantitation of oxalic acid and formic acid in tomato fruits. Data represent the values obtained from the means (± sd) of four plants, with two fruits per plant for each independent transgenic event and the wild type in triplicate represented by error bars. Asterisks indicate significant difference (P < 0.05) analyzed by Wilcoxon rank sum test.