[Experimental study of Microcystis-associated and free-living cyanobacteria].
In the experiment with water from the hypereutrophic Lake Frederiksborg Slotso (Denmark) sampled during the autumn peak of Microcystis growth, the quantity and production of free-living and cyanobacteria-associated heterotrophic bacteria were determined, as well as the extracellular enzymatic (aminopeptidase) activity. The functional diversities of associated and free-living bacterial communities were additionally compared using BIOLOG GN microplates to reveal the possible export of Microcystis-attached bacteria into ambient water. It has been shown that the cell size, production values, and growth rates of associated bacteria were less than those of free-living bacteria. At the same time, the potential aminopeptidase activity of associated bacteria was always higher than that of free-living bacteria. The experimental results have shown significant compositional differences in the structure of bacterial communities from different habitats.
Kapustina
L L
LL
D000626:Aminopeptidases / Q000096:biosynthesis*; D001419:Bacteria / Q000254:growth & development* / Q000378:metabolism*; D015169:Colony Count, Microbial; D003718:Denmark; D005618:Fresh Water; D046931:Microcystis / Q000254:growth & development* / Q000378:metabolism*
D000626:Aminopeptidases