Fig. 3
Molar carbon (rC, a) and nitrogen (rN, b) assimilation rates of PCC6803 under different steady state conditions. Cells were grown with ammonium (striped bars) or nitrate (white bars) as N source under LLHC (low light high carbon), HLHC (high light high carbon), and HLLC (high light low carbon) conditions. Growth conditions are described in the legend of Fig. 2. Mean values and standard deviations were calculated for three different measurement days. See “Materials and methods” for details on the measurements