Fig. 3From: Inoculation with Azorhizobium caulinodans ORS571 enhances plant growth and salt tolerance of switchgrass (Panicum virgatum L.) seedlingsA. caulinodans ORS571 promoted the contents of chlorophyll and soluble solids and decreased proline content under salt stress. a Chlorophyll a content; b Chlorophyll b content; c Total chlorophyll content; d Soluble sugar content; e Soluble protein content; f Proline content. 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