Fig. 3. Metabolites distinct in B. distachyon exudates from different growth conditions.

Normalized peak height of metabolites significantly different between growth conditions (light blue: sterile, red: sucrose supplemented, dark blue: nonsterile)(Anova/Tukey test, p < 0.05, p-values are given in Supplementary Data 1). Sucrose-supplemented vs sterile conditions a, nonsterile vs sterile conditions b. Displayed are all conditions as reference, black boxes and labeling to the left indicate in which conditions a metabolite is distinct, and if it its abundance is increased or decreased compared to control. S: Sterile, NS: nonsterile, 4-hydroxy-2: 4-hydroxy-2-quinolinecarboxylic acid, *: and/or isomers. Data are averages ± SEM, n = 4–5 jars per growth condition with 3 plants each. Metabolites are colored by class: orange: Amino acids, peptides and derivatives, purple: carbohydrates and conjugates, green: lipids and lipid-like, blue: nucleosides, nucleotides and derivatives, red: organic acids, black: other.