Fig. 4From: The stringent response regulator (p) ppGpp mediates virulence gene expression and survival in Erwinia amylovoraClassification and verification of differentially expressed genes (DEGs). Functional categories of DEGs according to the clusters of orthologous groups (COG) database. a the (p) ppGpp0 mutant and WT at 3 h (b) WT at 6 h and WT at 3 h. Red: up-regulated; blue: down-regulatedBack to article page