Abstract
Iron is one of the most important micronutrients for the growth of M.aeruginosa, one of the cyanobacteria forming toxic blooms in closed freshwater systems of the world. Recent studies have shown that the extracellular reduction of ferric iron mediated by superoxide is a key step in the process of iron acquisition by some marine phytoplankton. However, little is known about the iron uptake associated with superoxide generation. We investigated the effect of extracellular superoxide generation on the growth and iron uptake of M. aeruginosa. Our results suggested that superoxide generation associated with cell surface and ferrous iron form can participate in iron uptake.
