Fig. 4

hfq mutations impair resistance to H₂O₂ and pH in Xanthomonas axonpodis pv. citri. Xac29–1, Xac29–1Δhfq and Xac29–1Δhfq-C, were grown on nutrient broth (NB) agar plates with 0 mM H₂O₂, 0.001 mM H₂O₂, or 0.01 mM H₂O₂ (a) and with pH 5.0, pH 7.0, or pH 9.0 (b). Three replicates for each treatment were used, and the experiment was repeated three times.