Fig. 1: Growth response to NaCl under N-replete or N-depleted conditions.
From: A unicellular cyanobacterium relies on sodium energetics to fix N2
a Growth curves of cells grown in four different media over a period of 9 days. b Growth curves of 7-day-old non-growing cells in BG110 with the addition of NaCl over a period of 7 days. c Cell number increase of cells grown in BG11 with NaCl gradients. d Cell number increase of cells grown in BG110 with NaCl gradients. e N2 fixation activity of cells grown in BG110 with NaCl gradients. Nitrogenase activity is expressed as ethylene (C2H4) production by acetylene reduction. Data are presented as mean ± standard deviation (n = 3 biologically independent samples). Different letters on each bar (c, d, e) indicate statistical significance (p < 0.05) calculated by one-way ANOVA with Tukey’s HSD post-hoc analysis over all populations tested. In figure d, line segments and corresponding significance markers indicate statistical significance calculated by one-way ANOVA across four salinity treatments (2, 4, 9, 18 g/L). Significance: ns (no significance), *(p < 0.05), **(p < 0.01), ***(p < 0.001), ****(p < 0.0001). Source data are provided as a Source Data file.
