Utilization of selected dissolved organic phosphorus compounds by bacteria in lake water under non-limiting orthophosphate conditions

• Autorzy: Siuda W , Chrost R.J.
• Języki publikacji: EN

Abstrakty

EN

This study presents results on the availability of various organic P compounds for bacteria from mesotrophic Lake Constance. The rates of hydrolysis of all tested compounds added to the analyzed lake water samples did not correlate with assimilation of liberated inorganic P. beta -glycerophosphate and AMP were the most efficiently hydrolysed by bacterial phosphohydrolytic enzymes. The highest specific P uptake was found in water samples supplemented with nucleotides. The fastest increase in bacterial numbers was observed in water samples enriched with DNA, RNA, ATP and phytin. Analysis of discrepancies between rates of hydrolysis, specific P uptake and bacterial growth rates in samples enriched with various organic P compounds suggested that bacterial phosphatases participated substantially in processes of dissolved organic carbon (DOC) compound decomposition in lake water, whereas 5'-nucleotidase was mainly responsible for bacterial P demand.

Słowa kluczowe

EN

5'nucleotidase; orthophosphate; utilization; organic phosphorus; nucleic acid; phosphorus compound; bacteria; phosphatase; nucleotide; phosphate ester; lake water

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2001
• Tom: 10
• Numer: 6
• Opis fizyczny: p.475-483,fig.,ref.

Twórcy

autor

Siuda W

• University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland

autor

Chrost R.J.

Bibliografia

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