Fig. 4From: Inoculation with Azorhizobium caulinodans ORS571 enhances plant growth and salt tolerance of switchgrass (Panicum virgatum L.) seedlingsA. caulinodans ORS571 improved activities of POD and SOD. a Activity of POD; b Activity of SOD. The same letters indicate that the result is not significant (P < 0.05) according to one-way ANOVA; error bars are standard error (SE), n = 3Back to article page