Showing papers in "FEMS Microbiology Ecology in 2007"

TL;DR: Here, well-established exploratory and hypothesis-driven approaches are reviewed, so as to foster their addition to the microbial ecologist toolbox.

TL;DR: The reduction in methane production by bromochloromethane was associated with an average decrease of 34% in the number of methanogenic Archaea when monitored with this qPCR assay.

TL;DR: The biases associated with preferential amplification of multitemplate PCR were investigated using 'universal' bacteria-specific primers, focusing on the effect of primer mismatch, annealing temperature and PCR cycle number.

TL;DR: It was not only the species richness that was affected by temperature, but also the phylogenetic distribution of the microbial populations, suggesting a higher diversity compared to the community present at the thermophilic temperature.

TL;DR: This study is the first attempt to identify carbohydrates from the extraradical mycelium of an AM fungus, and demonstrates the direct effects of mycelial exudates on a soil bacterial community.

TL;DR: The C/N ratio of the additions (substrate and extra N) could not entirely explain the different results regarding fungal and bacterial growths, emphasizing the requirement for a better understanding of growth efficiencies of fungi and bacteria.

TL;DR: This review details the nematophagous bacteria known to date, including parasiticacteria, opportunistic parasitic bacteria, rhizobacteria, Cry protein-forming bacteria, endophytic bacteria and symbiotic bacteria, and focuses on recent research developments concerning their pathogenic mechanisms at the biochemical and molecular levels.

TL;DR: Ceca and Ceca were dominantly occupied by clostridia-related sequences with other abundant sequences being related to Faecalibacterium prausnitzii, Escherichia coli, lactobacilli and Ruminococcus.

TL;DR: Over 18 months, enterobacteria were isolated from the raw and treated wastewater of a municipal treatment plant and no significant positive correlations were observed between antibiotic, disinfectant and heavy metal resistance.

TL;DR: Characterization of the microbial diversity existing within permafrost environments is important as it will lead to a better understanding of how microorganisms function and survive in such extreme cryoenvironments.

TL;DR: The communities were relatively stable between sample dates at the phyla and subphyla levels, but differed significantly at finer phylogenetic scales, which appears consistent with previous work demonstrating that shrub soils contain an active, bioavailable C fraction, while tussock soils are dominated by more recalcitrant substrates.

TL;DR: Investigation of the seasonality of the bacterial assemblage composition in north-west Mediterranean coastal waters indicated that bacterial diversity changed gradually throughout the year, although with a clear distinction of the summer period, and denaturing gradient gel electrophoresis indicated that Alphaproteobacteria were the dominant group.

TL;DR: The results of this work suggest that a large proportion of bacteria present in clouds have the capacity to be metabolically active there, and a good picture of the microbial content of cloud water in terms of classification is given.

TL;DR: Although the highest fungal biomass was found in the two organic systems of the DOK field trial, their contribution to the differentiation of community structures according to the management regime was relatively low.

TL;DR: The experiments revealed that Chloroflexi constituted a specialized group of filamentous bacteria only active under aerobic conditions consuming primarily carbohydrates, suggesting growth on complex polysaccharides.

TL;DR: It is concluded that whole-community experiments offer a way to test whether information about microbial composition will help predict ecosystem responses to global change and provide evidence that, at least in some cases, microbial composition influences ecosystem functioning.

TL;DR: Neither Bt-maize pollen nor high concentrations of Cry1Ab significantly affected bacterial communities in honeybee intestines, and total bacterial community structures may not be a sensitive indicator for providing evidence for the impact of insecticidal proteins on honeybees at sublethal levels.

TL;DR: Using 1H nuclear magnetic resonance, it was shown that these isolates have the capacity to degrade organic compounds found in Arctic snow, and this can allow them to develop when snow melts, and thus to be actively involved in snow chemistry.

TL;DR: A quantitative PCR approach was applied using primers targeting the domains of Bacteria and Archaea, and key functional genes for sulfate reduction (dsrA) and methanogenesis (mcrA) were targeted, suggesting sulfate-dependent anaerobic oxidation of methane.

TL;DR: Differences in microbial community composition in Arctic fjelds of Finnish Lapland could be explained primarily by variations in the bedrock materials that cause variation in the soil pH.

TL;DR: The coexistence of Aquaspirillum, Azoarcus and Thauera-related bacteria in a range of treatment plants with differences in wastewater, design and operation suggest that the populations ensure a functional stability of the plants by occupying different ecological niches related to the carbon transformation.

TL;DR: Predicting an observed microbial taxa-volume relationship using an NCM and providing the strongest evidence so far for neutral community assembly in any group of organisms, macro or micro is provided.

TL;DR: This study provides the first detailed analysis of total and metabolically active microbial communities in radionuclide-contaminated subsurface sediments and points to several groups of nitrate-reducers that appear to be well adapted to environmental conditions common to radion Euclide- Contaminated sites.

TL;DR: In this paper, a novel lipase was isolated from a metagenomic library of Baltic Sea sediment bacteria and cloned into a copy control fosmid vector (pCC1FOS) generating a library of...

TL;DR: The spatial and temporal distribution of pelagic Archaea was studied in the southern North Sea by rRNA hybridization, sequencing and quantification of 16S rRNA gene and membrane lipid analyses and related to physical, chemical and biological parameters to determine the factors influencing archaeal biogeography.

TL;DR: This work reviews experiments focusing on the production of the primary siderophore (pyoverdin) of the opportunistic bacterial pathogen, Pseudomonas aeruginosa, which test kin selection theories that seek to explain the evolution of cooperation.

TL;DR: The algal storage glucan laminarin is one of the most abundant carbon sources for marine prokaryotes and its degradation was investigated in bacteria isolated during and after a spring phytoplankton bloom in the coastal North Sea.

TL;DR: Application of physical and chemical concepts, complemented by studies of prokaryotes in ice cores and permafrost, has led to the present understanding of how microorganisms can metabolize at subfreezing temperatures on Earth and possibly on Mars and other cold planetary bodies.

TL;DR: The depth distribution and community composition of Archaea in a temperate acidic forest soil was elucidated and it was indicated that Crenarchaeota of the Group I.1c were the predominant 16S rRNA genotype in the soil.

TL;DR: Analysis of the estimated parameter values showed that E. coli O157:H7 survived for shorter periods of time and was more sensitive to competition by the native microbial community than Salmonella serovar Typhimurium.