Intracellular phosphorus pool of the cyanobacteriumSpirulina platensis

An intracellular phosphorus pool in a monoculture of the cyanobacteriumSpirulina platensis was assessed using radioactive and nonradioactive phosphorus. The derived dependence of specific growth rate on the intracellular content of mineral phosphorus can be presented in the form of the Droop equation. It was found that the stage of replenishment of the intracellular phosphorus pool may affect the phosphorus turnover estimation in aquatic environments from the results of short-term measurements of phosphorus uptake