Abstract
Four salts, SEALIFE (a synthetic sea salt), NaCl, Na(2)SO(4), and NaCl+KCl, were applied to monitor the effects of salinity on "Candidatus Scalindua sp.", a marine anaerobic ammonium oxidation (anammox) bacterium. The highest ammonium consumption of 10 μmol mg protein(-1) d(-1) was observed at 88 mmol L(-1) of Na in the presence of NaCl. The highest inorganic carbon uptake of 0.6 μmol mg protein(-1) d(-1) was observed at 117 mmol L(-1) of Na and at 16 mmol L(-1) of K in the presence of NaCl+KCl. Thus, Na and K are both important for maintaining a high growth rate of "Candidatus Scalindua sp."