About: Grazer and virus-induced mortality of bacterioplankton accelerates development of Flectobacillus populations in a freshwater community     Goto   Sponge   NotDistinct   Permalink

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  • We analyzed the effects of distinct bacterial mortality factors, viral lysis and heterotrophic nanoflagellates (HNF) bacterivory, associated with the development of filamentous Flectobacillus populations. Reservoir bacterioplankton were subjected to additions of both HNF and viruses together, or HNF alone, and then incubated in situ in dialyses bags. For distinct bacterial groups, mortality or growth stimulation was analyzed and bacterial groups vulnerable to HNF predation or discriminated against were detected. Bacterial lineages most vulnerable to virus-lysis were also identified. Filaments affiliated with the Flectobacillus cluster appeared in both treatments with HNF, but were about twice as abundant, long and active as in incubations with viruses and HNF as compared to HNF alone. Viruses appeared to selectively suppress several bacterial groups, perhaps enhancing substrate availability thus stimulating growth and activity of filamentous Flectobacillus.
  • We analyzed the effects of distinct bacterial mortality factors, viral lysis and heterotrophic nanoflagellates (HNF) bacterivory, associated with the development of filamentous Flectobacillus populations. Reservoir bacterioplankton were subjected to additions of both HNF and viruses together, or HNF alone, and then incubated in situ in dialyses bags. For distinct bacterial groups, mortality or growth stimulation was analyzed and bacterial groups vulnerable to HNF predation or discriminated against were detected. Bacterial lineages most vulnerable to virus-lysis were also identified. Filaments affiliated with the Flectobacillus cluster appeared in both treatments with HNF, but were about twice as abundant, long and active as in incubations with viruses and HNF as compared to HNF alone. Viruses appeared to selectively suppress several bacterial groups, perhaps enhancing substrate availability thus stimulating growth and activity of filamentous Flectobacillus. (en)
  • Studovali jsme vliv predace prvoků na bakteriích a jejich mortalitu navozenou virovou lyzí, které ovlivnily různě rozvoj populace vláknitých bakterií rodu Flectobacillus. Bakterioplankton z přehradní nádrže byl obohacen přídavky heterotrofních bičíkovců a virů současně, nebo pouze bičíkovci a potom inkubován v dialyzačních pytlích. Pro různé bakteriální slupiny byla stanovena mortalita způsobená těmito faktory nebo případná růstová stimulace. Tak byly určeny skupiny bakterií, které byly selektivně vyžírány nebo ty, které byly napadeny viry. Vláknité bakterie rodu Flectobacillus se objevily v obou variantách s bičíkovci, byly však mnohem početnější, větší a aktivnější ve variantách obohacených jak prvoky, tak i viry. Ukázalo se, že viry selektivně odstranily některé skupiny bakterií, čímž se zvýšila dostupnost substrátu a došlo ke stimulaci růstu vláken rodu Flectobacillus, které odolávaly jak žíru prvoků, tak i významnějšímu dopadu virové lyze. (cs)
Title
  • Grazer and virus-induced mortality of bacterioplankton accelerates development of Flectobacillus populations in a freshwater community
  • Grazer and virus-induced mortality of bacterioplankton accelerates development of Flectobacillus populations in a freshwater community (en)
  • Mortalita bakterioplanktonu způsobená prvoky a viry urychluje rozvoj populací Flectobacillus ve sladkovodním společenstvu (cs)
skos:prefLabel
  • Grazer and virus-induced mortality of bacterioplankton accelerates development of Flectobacillus populations in a freshwater community
  • Grazer and virus-induced mortality of bacterioplankton accelerates development of Flectobacillus populations in a freshwater community (en)
  • Mortalita bakterioplanktonu způsobená prvoky a viry urychluje rozvoj populací Flectobacillus ve sladkovodním společenstvu (cs)
skos:notation
  • RIV/60077344:_____/07:00086728!RIV08-AV0-60077344
http://linked.open.../vavai/riv/strany
  • 789;800
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(1QS600170504), P(GA206/05/0007), V, Z(AV0Z60170517), Z(MSM6007665801)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 423634
http://linked.open...ai/riv/idVysledku
  • RIV/60077344:_____/07:00086728
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • bacterioplankton community composition; virus lysis; flagellate bacterivory; reservoir; FISH analysis of food vacuoles; microautoradiography (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [954AD3C63D32]
http://linked.open...i/riv/nazevZdroje
  • Environmental Microbiology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 9
http://linked.open...iv/tvurceVysledku
  • Horňák, Karel
  • Šimek, Karel
  • Nedoma, Jiří
  • Dolan, J. R.
  • Weinbauer, M. G.
  • Jezbera, Jan
http://linked.open...n/vavai/riv/zamer
issn
  • 1462-2912
number of pages
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