Broad habitat range of the phylogenetically narrow R-BT065 cluster, representing a core group of the Betaproteobacterial genus Limnohabitans
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
Grantová podpora
P 19853
Austrian Science Fund FWF - Austria
PubMed
19948856
PubMed Central
PMC2812994
DOI
10.1128/aem.02203-09
PII: AEM.02203-09
Knihovny.cz E-zdroje
- MeSH
- Betaproteobacteria klasifikace genetika izolace a purifikace MeSH
- chlorofyl a MeSH
- chlorofyl analýza MeSH
- DNA bakterií chemie MeSH
- ekosystém * MeSH
- Eukaryota genetika MeSH
- fosfor analýza MeSH
- fylogeneze MeSH
- genetická variace MeSH
- hybridizace in situ fluorescenční MeSH
- mikrobiologie vody MeSH
- nadmořská výška MeSH
- počet mikrobiálních kolonií MeSH
- ribozomální DNA genetika MeSH
- RNA ribozomální 16S genetika MeSH
- RNA ribozomální 18S genetika MeSH
- sekvenční analýza DNA MeSH
- shluková analýza MeSH
- skleníkový efekt MeSH
- sladká voda chemie mikrobiologie MeSH
- uhlík analýza MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Evropa MeSH
- Názvy látek
- chlorofyl a MeSH
- chlorofyl MeSH
- DNA bakterií MeSH
- fosfor MeSH
- ribozomální DNA MeSH
- RNA ribozomální 16S MeSH
- RNA ribozomální 18S MeSH
- uhlík MeSH
The distribution of the phylogenetically narrow R-BT065 cluster (Betaproteobacteria) in 102 freshwater lakes, reservoirs, and various ponds located in central Europe (a total of 122 samples) was examined by using a cluster-specific fluorescence in situ hybridization probe. These habitats differ markedly in pH, conductivity, trophic status, surface area, altitude, bedrock type, and other limnological characteristics. Despite the broad ecological diversity of the habitats investigated, the cluster was detected in 96.7% of the systems, and its occurrence was not restricted to a certain habitat type. However, the relative proportions of the cluster in the total bacterioplankton were significantly lower in humic and acidified lakes than in pH-neutral or alkaline habitats. On average, the cluster accounted for 9.4% of the total bacterioplankton (range, 0 to 29%). The relative abundance and absolute abundance of these bacteria were significantly and positively related to higher pH, conductivity, and the proportion of low-molecular-weight compounds in dissolved organic carbon (DOC) and negatively related to the total DOC and dissolved aromatic carbon contents. Together, these parameters explained 55.3% of the variability in the occurrence of the cluster. Surprisingly, no clear relationship of the R-BT065 bacteria to factors indicating the trophic status of habitats (i.e., different forms of phosphorus and chlorophyll a content) was found. Based on our results and previously published data, we concluded that the R-BT065 cluster represents a ubiquitous, highly active segment of bacterioplankton in nonacidic lakes and ponds and that alga-derived substrates likely form the main pool of substrates responsible for its high growth potential and broad distribution in freshwater habitats.
Appl Environ Microbiol. 2010 Jun;76(11):3763 PubMed
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Aerobic Anoxygenic Photosynthesis Is Commonly Present within the Genus Limnohabitans
