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Release of aminoaci...
Release of aminoacids and inorganic nutrients by heterotrophic marine microflagellates
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- Andersson, Agneta (författare)
- Department of Microbiology. University of Urnea. S-901 87 UMEA, Sweden
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Lee, C. (författare)
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Azam, F. (författare)
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visa fler...
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- Hagström, Åke (författare)
- Department of Microbiology. University of Urnea. S-901 87 UMEA, Sweden
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visa färre...
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Department of Microbiology University of Urnea. S-901 87 UMEA, Sweden (creator_code:org_t)
- 1985
- 1985
- Engelska.
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Ingår i: Marine Ecology Progress Series. - 0171-8630 .- 1616-1599. ; 23, s. 99-106
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Heterotrophic microflagellates isolated from the Baltic Sea and grown under laboratoryconditions were shown to release dissolved free amino acids (DFAA) when grazing bacteria. Flagellatesreleased 3H-amino acids when fed 3H-leucine-labelled bacteria, and concentrations of aminoacids increased in the experimental medium. Serine showed a strong positive correlation withflagellate feeding. Aspartic acid, glutamic acid and ornithine also increased more than other aminoacids. During consumption of bacteria, the flagellates released 13% of the ingested nitrogen asammonia, and 30 % of the ingested phosphorus as phosphate. In a field experiment off Scripps Pier, wemeasured bacterial production, flagellate abundance, and concentration of DFAA over a 28 h period.The concentration of DFAA showed a covariation with the flagellate numbers. Results from our fieldand laboratory experiments suggest that flagellates may be a source of DFAA in the sea.
Ämnesord
- NATURVETENSKAP -- Biologi -- Mikrobiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Microbiology (hsv//eng)
Nyckelord
- Microbiology
- Mikrobiologi
- Mikrobiologi
- Microbiology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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