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The role of cell-surface-bound phosphatases in species competition within natural phytoplankton assemblage: an .i. in situ./i. experiment

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    0317645 - BC 2009 RIV IT eng J - Journal Article
    Štrojsová, A. - Nedoma, Jiří - Štrojsová, Martina - Cao, X. - Vrba, Jaroslav
    The role of cell-surface-bound phosphatases in species competition within natural phytoplankton assemblage: an in situ experiment.
    [Role fosfatáz vázaných na povrch buněk pro mezidruhovou kompetici v přirozeném společenstvu fytoplanktonu: in-situ experiment.]
    Journal of Limnology. Roč. 67, č. 2 (2008), s. 128-138. ISSN 1129-5767. E-ISSN 1723-8633
    R&D Projects: GA AV ČR(CZ) IAA6017202; GA AV ČR(CZ) IAA600170602; GA MŠMT(CZ) ME 617
    Institutional research plan: CEZ:AV0Z60170517
    Keywords : competition * ectoenzyme * ELF97 phosphate
    Subject RIV: EH - Ecology, Behaviour
    Impact factor: 0.684, year: 2008
    www.jlimnol.it/JL_67_2/JL67_2.htm

    We studied phytoplankton species competition in a freshwater reservoir during an in situ experiment. Total and cell-surface-bound phosphatase activities in the phytoplankton were investigated using the Fluorescently Labelled Enzyme Activity (FLEA) technique. We propose that the ability to hydrolyze organic polymers and particles with cell-surface-bound phosphatases is advantageous for longer persistence of given population in a phosphate-scarce environment; although phosphatase-positive species cannot dominate the reservoir phytoplankton solely because of specific phosphorus-scavenging strategy.

    Studovali jsme mezidruhovou kompetici ve fytoplanktonu v in-situ pokuse. Celková aktivita fosfatáz a aktivita fosfatáz vázaných na buňky byla měřena pomocí metody FLEA (Fluorescently labelled enzyme activity). Došli jsme k závěru že schopnost hydrolyzovat organické polymery pomocí fosfatáz je výhodná pro delší přežívání určité populace v prostředí chudém na fosforečnany, tato strategie získávání fosforu však ama o sobě nemůže zajistit dominanci druhu ve fytoplanktonu.
    Permanent Link: http://hdl.handle.net/11104/0167237

     
     
Number of the records: 1  

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