Fig. 6.

Relative leaf contents of selected metabolites at growth stage 5.1. Leaf samples were harvested (A) after 9 h illumination at the end of the day and (B) after 13 h darkness at the end of the night. Fold values are means±SD of the respective GC-MS data from at least four biological replicates. Asterisks indicate that the difference from the wild type control is significant based on Student’s t-test (*P < 0.05). The complete list is provided as Supplementary Table S5. Abbreviations: 3HP, hydroxypyruvate; GABA, γ-aminobutyric acid.