SYNOPSIS. Growth of streptomycin‐bleached Euglena gracilis depends in part on the availability of phosphorus. Maximum cell density on a defined medium is reached at a phosphorus (supplied as inorganic phosphate) concentration of 4–5 μ/ml. At lower concentrations, the cells apparently deplete the medium of phosphorus. Inorganic phosphorus at > 1 mg/ml inhibits growth in terms of cell density per ml and generation time. Phosphorus‐limited cells survive for at least 6–7 days and are able to undergo mitosis following a lag period when returned to phosphorus‐containing medium. The majority of inorganic 32P incorporated by these Euglena ends up in the hot trichloroacetic acid soluble fraction and in the ethanol‐ether soluble fraction.
|Original language||English (US)|
|Number of pages||4|
|Journal||The Journal of Protozoology|
|State||Published - Nov 1968|
ASJC Scopus subject areas