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Titolo:
Utilization of selected dissolved organic phosphorus compounds by bacteriain lake water under non-limiting orthophosphate conditions
Autore:
Siuda, W; Chrost, RJ;
Indirizzi:
Univ Warsaw, Inst Microbiol, Dept Microbiol Ecol, PL-02096 Warsaw, Poland Univ Warsaw Warsaw Poland PL-02096 crobiol Ecol, PL-02096 Warsaw, Poland
Titolo Testata:
POLISH JOURNAL OF ENVIRONMENTAL STUDIES
fascicolo: 6, volume: 10, anno: 2001,
pagine: 475 - 483
SICI:
1230-1485(2001)10:6<475:UOSDOP>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALKALINE-PHOSPHATASE ACTIVITY; COASTAL MARINE WATERS; 5'-NUCLEOTIDASE ACTIVITY; ENZYME-ACTIVITY; DNA; REGENERATION; BACTERIOPLANKTON; PHYTOPLANKTON; AVAILABILITY; ENVIRONMENTS;
Keywords:
bacteria; orthophosphate; phosphate esters; nucleotides; nucleic acids; P uptake; organic C uptake; phosphatases; 5 '-nucleotidase;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Siuda, W Univ Warsaw, Inst Microbiol, Dept Microbiol Ecol, Ul Miecznikowa 1, PL-02096 Warsaw, Poland Univ Warsaw Ul Miecznikowa 1 Warsaw Poland PL-02096 rsaw, Poland
Citazione:
W. Siuda e R.J. Chrost, "Utilization of selected dissolved organic phosphorus compounds by bacteriain lake water under non-limiting orthophosphate conditions", POL J ENV S, 10(6), 2001, pp. 475-483

Abstract

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 phosphohydrolyticenzymes. 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/04/20 alle ore 19:03:36