Morphological and compositional shifts in an experimental bacterial community influenced by protists with contrasting feeding modes.

Applied and Environmental Microbiology
K. SimekR Psenner

Abstract

In a two-stage continuous-flow system, we studied the impacts of different protozoan feeding modes on the morphology and taxonomic structure of mixed bacterial consortia, which were utilizing organic carbon released by a pure culture of a Rhodomonas sp. grown on inorganic medium in the first stage of the system. Two of three second stages operated in parallel were inoculated by a bacterivorous flagellate, Bodo saltans, and an algivorous ciliate, Urotricha furcata, respectively. The third vessel served as a control. In two experiments, where algal and bacterial populations grew at rates and densities typical for eutrophic waters, we compared community changes of bacteria, algae, and protozoa under quasi-steady-state conditions and during the transient stage after the protozoan inoculation. In situ hybridization with fluorescent oligonucleotide probes and cultivation-based approaches were used to tentatively analyze the bacterial community composition. Initially the cell size distribution and community structure of all cultivation vessels showed similar patterns, with a dominance of 1- to 2.5-(mu)m-long rods from the beta subdivision of the phylum Proteobacteria ((beta)-Proteobacteria). Inoculation with the ciliate increased bact...Continue Reading

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Citations

Nov 27, 2002·Applied and Environmental Microbiology·Regin RønnJames I Prosser
Jan 9, 2004·Applied and Environmental Microbiology·Qinglong L WuMartin W Hahn
Oct 7, 2004·Applied and Environmental Microbiology·Jakob PernthalerKlaus Jürgens
Apr 22, 2010·Environmental Microbiology·Judith F BlomJakob Pernthaler
Jul 27, 2010·Applied and Environmental Microbiology·Judith F BlomJakob Pernthaler
Jun 15, 2013·The ISME Journal·Muhammad SaleemAntonis Chatzinotas
Feb 2, 2000·Applied and Environmental Microbiology·L RiemannF Azam
Apr 28, 2004·FEMS Microbiology Reviews·Markus G Weinbauer
Jun 6, 2002·The Journal of Eukaryotic Microbiology·Heather A CallahanEdward J Noga
Sep 10, 2009·The Journal of Eukaryotic Microbiology·David F GruberGary L Taghon
Nov 30, 2010·Ecological Entomology·K S Pelz-StelinskiM G Kaufman
Jan 29, 2000·The Journal of Eukaryotic Microbiology·M V Zubkov, M A Sleigh
Apr 11, 2001·FEMS Microbiology Ecology·M W. Hahn, M G. Höfle
Feb 5, 2005·Applied and Environmental Microbiology·Carsten Matz, Klaus Jürgens
Dec 22, 2004·Journal of Applied Microbiology·S A HuwsP Gilbert
Dec 23, 2006·Microbial Ecology·S Paul ShannonJames P Grover
Oct 13, 2009·Applied and Environmental Microbiology·Joseph J CunninghamMaureen Lewis
Sep 9, 2005·Microbiology and Molecular Biology Reviews : MMBR·Jakob Pernthaler, Rudolf Amann
Jun 9, 2009·Journal of Bacteriology·William LainhartGerald B Koudelka
Nov 10, 2011·Toxins·Steven A Mauro, Gerald B Koudelka
May 11, 2012·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Menka Mittal, Karl J Rockne
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Jun 15, 2005·Nature Reviews. Microbiology·Jakob Pernthaler
Aug 31, 2000·Applied and Environmental Microbiology·J S PoindexterJ T Staley
May 7, 2003·Applied and Environmental Microbiology·Christine BeardsleyRudolf Amann

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