Abstract
The ability to decompose organic and to solubilise inorganic phosphorus compounds was studied in heterotrophic bacteria isolated from a sandy beach in Sopot, southern Baltic coast. Bacteria able to hydrolyse DNA and phytin were most numerous, while only a small percentage of the studied strains was able to depolymerise glycerophosphate. The ranking of the potential of the studied bacteria to solubilise metallic phosphate salts as follows: calcium hydrogen phosphate>ferric phosphate>magnesium phosphate>calcium phosphate>aluminium phosphate. There were marked differences in the level of depolymerisation of organic compounds of phosphorus and solubilisation of inorganic phosphorus between bacteria inhabiting different parts of the studied beach, while there were generally no differences between the surface and subsurface sand layers. The activity of alkaline phosphatase was higher than that of acid phosphatase.
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