Table 2.   Pathways of identified metabolites differentially accumulated locally or systemically upon OG treatment in leaves or roots. The percentage of signals showing significantly higher accumulation from the total identified signals for a given treatment is shown in brackets. Identified metabolites were assigned to their corresponding metabolic pathways, and the number in the right refers to the identified compounds within that pathway. The signals corresponding to different treatments were compared using the non-parametric Kruskal-Wallis test, and only data with a p-value<0.01 between groups were used for subsequent identification.