Figure 3

Heat map showing the relative abundances of dominant classified bacterial genera in cucumber rhizosphere soils treated with water (W) or vanillic acid at 0.05 μmol g⁻¹ soil (VA). Classified bacterial genera with average relative abundances >0.3% were identified in each sample by colors deduced from the raw Z-scores. Hierarchical clustering of samples was performed using the average clustering method with the Euclidean distances.