Počet záznamů: 1

Bacterial single-cell activities along the nutrient availability gradient in a canyon-shaped reservoir: a seasonal study

  1. 1.
    0349508 - BC-A 2011 RIV DE eng J - Článek v odborném periodiku
    Horňák, Karel - Jezbera, Jan - Šimek, Karel
    Bacterial single-cell activities along the nutrient availability gradient in a canyon-shaped reservoir: a seasonal study.
    Aquatic Microbial Ecology. Roč. 60, č. 3 (2010), s. 215-225 ISSN 0948-3055.
    [Congress of the International Limnological Society /31./. Kapské Město, 15.08.2010-20.08.2010]
    Grant CEP: GA ČR(CZ) GA206/08/0015; GA ČR(CZ) GAP504/10/1534
    Výzkumný záměr: CEZ:AV0Z60170517
    Klíčová slova: reservoir * bacterial activity * leucine and glucose incorporation * HNA and LNA cells
    Kód oboru RIV: EE - Mikrobiologie, virologie
    Impakt faktor: 2.089, rok: 2010

    We investigated the linkages between the composition and the activities of bacterioplankton assemblages in three stations (Dam, Middle, River) in the meso-eutrophic Římov reservoir (Czech Republic). At all stations, Betaproteobacteria (BET) or Actinobacteria (ACT) dominated the bacterial community composition, while Cytophaga-Flavobacteria (CF) accounted for smaller proportions. ACT showed high proportions of cells incorporating both leucine and glucose in all samples, whereas only small fractions of CF were scored positive for the incorporation of these substrates. BET incorporated leucine preferentially to glucose in all samples. Interestingly, CF and BET significantly contributed to the pool of high nucleic acid cells (HNA) at Stn River, whereas the opposite was found for ACT, forming the pool of low nucleic acid cells (LNA) at all stations. Since ACT efficiently incorporated organic substrates, the LNA fraction represented a highly active component of bacterial assemblages.
    Trvalý link: http://hdl.handle.net/11104/0189725