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. 2017 Jul 28;18(8):1625. doi: 10.3390/ijms18081625

Figure 2.

Figure 2

Rhizobial growth affected by NaCl treatment. (a) RJS9-2; (b) BS1-1; (c) PN13-3; (d) LZ3-2. The four tested Bradyrhizobium strains were separately inoculated into liquid medium containing 0.0017 (CK), 0.1, 0.2, 0.3, 0.4, or 0.5 M NaCl and incubated at 28 °C for 4 to 9 days. The optical density (OD) of the cultures was recorded every 24 h at 600 nm. Each bar represents the mean of four biological replicates with standard error. An individual flask was considered one biological replicate. Asterisks (*) indicate significant differences between CK and other NaCl concentrations at a given time at p < 0.05 (Student’s t-test). ns indicates no significant difference between CK and other NaCl concentrations at a given time at p < 0.05 (Student’s t-test).