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. 2015 Aug 20;10(8):e0135639. doi: 10.1371/journal.pone.0135639

Fig 2. Reduced growth rate and improved sustainability.

Fig 2

A. Competence under starved conditions. The control strain (open circles) was co-cultured with R0, R1, R5 and R7 under starved conditions. The temporal changes of cell concentrations were monitored by a CFU assay. The standard errors of four to eight assay plates are indicated. B. Growth in the presence of histidine. The temporal changes in cell concentrations of R0, R1, R5 and R7 in the presence of 1, 10, and 100 μM histidine were evaluated by flow cytometry. Blue circles, purple squares, green rhombuses and red triangles represent R0, R1, R5 and R7, respectively. The standard errors of three independent test tubes (cultures) are indicated.