title: Properties ofChlorella vulgaris strain adapted to high concentration of ammonium nitrogen.
abstract: Chlorella vulgaris is very sensitive to high concentrations of ammonium nitrogen. In medium containing 0.33 g NH4-N/1 its growth is inhibited by 50%. Prolonged incubation of the strain in media inhibiting any increase in cell number enabled the isolation of a strain with enhanced tolerance to high ammonium nitrogen concentration. The strain has been designated Chlorella vulgaris/AA. The concentration of nitrogen inhibiting the growth of the strain by 50% was 195 g NH4-N/1. The acquired character proved stable. The isolated strain also demonstrated increased tolerance to high concentration of urea nitrogen. Chl. vulgaris/AA cells were larger than the cells of the parental strain.
mesh_terms: D000222:Adaptation, Physiological; D002708:Chlorella / Q000187:drug effects* / Q000254:growth & development; D003470:Culture Media; D006863:Hydrogen-Ion Concentration; D009584:Nitrogen / Q000494:pharmacology; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology
chemical_list: D003470:Culture Media; D000644:Quaternary Ammonium Compounds; D009584:Nitrogen