Figure 6
From: Root exudate composition reflects drought severity gradient in blue grama (Bouteloua gracilis)
Root exudate composition increased from T1 (before treatment) to T2 (after treatment) (A), and shifted among treatments A (control), B (mild), and C (severe) between T1 and T2 (B). Van Krevelen plots of FTICR-detected compounds at T1 and T2 colored by compound class (A) and treatment (B). Van Krevelen plots depict the elemental ratios of O:C and H:C of compounds on the x and y axes, respectively, and are used to group compounds into high-level chemical classes120,121.
