Predator-specific enrichment of actinobacteria from a cosmopolitan freshwater clade in mixed continuous culture
Article Abstract:
The composition and size of freshwater bacteria will vary depending on which predators are present. Many protistan predators preferentially consume larger bacteria, which could explain why most freshwater and marine bacterioplankton are relatively small.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2001
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Morphological and compositional shifts in an experimental bacterial community influenced by protists with contrasting feeding modes
Article Abstract:
The experimental bacterial community influenced by protists with different feeding modes reveal morphological and compositional shifts. The cell size distribution and community structure of bacteria show an increased growth upon innoculation with the ciliate. Inoculation with the bacterivore, Bodo saltans, reduces the proportion of the beta-Proteobacteria and leads to production of large grazing-resistant threadlike cells. It also causes a shift towards the numerical dominance of the alpha-Proteobacteria.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1997
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Contrasting bacterial strategies to coexist with a flagellate predator in an experimental microbial assemblage
Article Abstract:
The alpha- and beta-Proteobacteria in mixed assemblages adopt two specific strategies in response to flagellate predation. The alpha-Proteobacteria increase their growth rate to outgrow predator pressure. The beta-Proteobacteria produce inedible and inactive filaments. The strategies occur within 24 hr post flagellate addition. The production of biomass by the bacteria, after the introduction of flagellate predation, indicates the stimulation of cell elongation.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1997
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