Characterization of urease activity in three marine phytoplankton species, Aureococcus anophagefferens, Prorocentrum minimum, and Thalassiosira weissflogii

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Element stoichiometries of individual plankton cells collected during the Southern Ocean Iron Experiment (SOFeX) (2004, background): “Still, phytoplankton have been found to produce urease regardless of the N source being utilized (Fan et al. 2003), and urease activity appears to increase with growth rate.”
Harmful algal blooms: How strong is the evidence that nutrient ratios and forms influence their occurrence? (2012, background): “While some studies have been undertaken (e.g. Fan et al., 2003), comparative studies of the importance of urea as a substrate for HAB and non-HAB species under conditions in which blooms are most likely to occur are also urgently required.”
Prorocentrum minimum (Pavillard) Schiller A review of a harmful algal bloom species of growing worldwide importance (2005, background): “The activity of urease was also found not to vary with nitrogen growth source but was observed to be higher during exponential growth than during early exponential or early stationary phase (Fan et al., 2003b).”
DON as a source of bioavailable nitrogen for phytoplankton (2006, unknown): “A high affinity for urea by the dinoflagellateProrocentrum minimumcontributed significantly to a bloom in the Neuse River estuary (Fan et al., 2003a) and ambient urea concentrations were found to provide a potentially large proportion of the N required by the red tide alga,Lingulodinium polyedrum…”