Figure 2From: Biosynthesis of compatible solutes in rhizobial strains isolated from Phaseolus vulgaris nodules in Tunisian fieldsEffect of NaCl concentration on the growth rates of the strains isolated from common bean nodules. R. gallicum 8a3 (■) was grown in M79-I with 20 mM glucosa. R. etli 12a3 (□) and R. leguminosarum 31c3 (▲) were grown in M79-I with 20 mM mannitol, and R. tropici CIAT 899 (control) (Δ) and A. tumefaciens 10c2 (●) were grown in MAS with 20 mM mannitol. Growth rates are expressed as ΔOD600/h. Values shown are the mean of two replicas of each condition in three independent experiments ± SD (standard deviation).Back to article page