Figure 3.
Metabolome changes in Arabidopsis shoots upon root treatment by P. fluorescens SS101 or its cysH mutant 20H12. Shown are the results of the principal component analysis (PCA) (a) and hierarchical cluster analysis (HCA) (b) based on the differentially regulated semi-polar metabolites. In the HCA, various metabolite clusters are indicated by different colors and when none of the metabolites in a given cluster was annotated, the cluster number was omitted (clusters 3, 5, and 10 in panel b). * GLS, glucosinolate; ** d, derivative.