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Statements

Subject Item
n2:RIV%2F60077344%3A_____%2F07%3A00086728%21RIV08-AV0-60077344
rdf:type
skos:Concept n13:Vysledek
dcterms:description
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. 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. 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.
dcterms:title
Mortalita bakterioplanktonu způsobená prvoky a viry urychluje rozvoj populací Flectobacillus ve sladkovodním společenstvu 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
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 Mortalita bakterioplanktonu způsobená prvoky a viry urychluje rozvoj populací Flectobacillus ve sladkovodním společenstvu
skos:notation
RIV/60077344:_____/07:00086728!RIV08-AV0-60077344
n3:strany
789;800
n3:aktivita
n8:V n8:Z n8:P
n3:aktivity
P(1QS600170504), P(GA206/05/0007), V, Z(AV0Z60170517), Z(MSM6007665801)
n3:cisloPeriodika
3
n3:dodaniDat
n4:2008
n3:domaciTvurceVysledku
n16:7194536 n16:7264798 n16:3267253 n16:6252591
n3:druhVysledku
n15:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
423634
n3:idVysledku
RIV/60077344:_____/07:00086728
n3:jazykVysledku
n18:eng
n3:klicovaSlova
bacterioplankton community composition; virus lysis; flagellate bacterivory; reservoir; FISH analysis of food vacuoles; microautoradiography
n3:klicoveSlovo
n17:FISH%20analysis%20of%20food%20vacuoles n17:virus%20lysis n17:bacterioplankton%20community%20composition n17:reservoir n17:flagellate%20bacterivory n17:microautoradiography
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[954AD3C63D32]
n3:nazevZdroje
Environmental Microbiology
n3:obor
n6:EE
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
6
n3:projekt
n9:1QS600170504 n9:GA206%2F05%2F0007
n3:rokUplatneniVysledku
n4:2007
n3:svazekPeriodika
9
n3:tvurceVysledku
Nedoma, Jiří Dolan, J. R. Weinbauer, M. G. Šimek, Karel Jezbera, Jan Horňák, Karel
n3:zamer
n14:AV0Z60170517 n14:MSM6007665801
s:issn
1462-2912
s:numberOfPages
12