Properties of Chlorella vulgaris strain adapted to high concentration of ammonium nitrogen
Przytocka-Jusiak, M.; Mlynarczyk, A.; Kulesza, M.; Mycielski, R.
Acta Microbiologica Polonica 26(2): 185-197
1977
ISSN/ISBN: 0137-1320 PMID: 67767 Document Number: 3656
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.
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