Fig. 4From: Identification and denitrification characteristics of a salt-tolerant denitrifying bacterium Pannonibacter phragmitetus F1Removal of NO2−–N and NO3−–N by strain F1 in denitrification medium with different NaCl concentrations. Values represent the mean of three replicates and error bars represent standard deviations. Columns containing different letters indicate significant differences among treatments at p < 0.05 by Tukey’s testBack to article page