Fig. 2: Differential regulation of genes upon activation of the stringent response.

A Number of genes that were negatively (red, left side) or positively (green, right) regulated 30 min post treatment of exponentially growing cultures of P. aeruginosa PA14 exposed to increasing concentrations of serine hydroxamate (SHX). B Venn diagram showing the overlapping numbers of genes that were differentially regulated upon exposure to different SHX concentrations.