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Influence of Dissolved Organic Matter and Invertebrates on the Function of Microbial Films in Groundwater.
A New Era for
Effects of farmhouse hotel and paper mill effluents on bacterial community structures in sediment and surface water of Nanxi River, China.
The pyrosequencing technique was used to evaluate bacterial community structures in sediment and surface water samples taken from Nanxi River receiving effluents from a paper mill and a farmhouse hotel, respectively. For each sample, 4,610 effective bacterial sequences were selected and used to do t...
Distribution of naphthalene dioxygenase genes in crude oil-contaminated soils.
Polycyclic aromatic hydrocarbons (PAHs) are one of the major pollutants in soils in oil exploring areas. Biodegradation is the major process for natural elimination of PAHs from contaminated soils. Functional genes can be used as biomarkers to assess the biodegradation potential of indigenous microb...
Corrosion of iron by iodide-oxidizing bacteria isolated from brine in an iodine production facility.
These results strongly suggested the involvement of IOBs in the corrosion of the carbon steel pipes. Of the six bacterial strains isolated from a brine sample, four were capable of oxidizing iodide ion (I(-)) into molecular iodine (I(2)), and these strains were further phylogenetically classified in...
Characterization of aid1, a novel gene involved in Fusobacterium nucleatum interspecies interactions.
We describe a novel protein encoded by the predicted open reading frame FN1253 that appears to play a role in interspecies interactions of F. nucleatum, particularly with oral streptococci and related Gram-positive species. We designated FN1253 as aid1 (Adherence Inducing Determinant 1). Expression...
Longitudinal photosynthetic gradient in crust lichens' thalli.
In order to evaluate the self-shading protection for inner photobionts, the photosynthetic activities of three crust lichens were detected using Microscope-Imaging-PAM. The false color images showed that longitudinal photosynthetic gradient was found in both the green algal lichen Placidium sp. and...
Identification of vaginal lactobacilli with potential probiotic properties isolated from women in North Lebanon.
The aim of this work was to study the diversity of vaginal lactobacilli in Lebanese women and to evaluate the antagonism, hydrophobicity, and safety characteristics of these strains. This study was performed on samples from 135 women who visited a gynecology clinic in the north of Lebanon, between S...
Functional diversity of bacterioplankton in three North Florida freshwater lakes over an annual cycle.
The phylogenetic diversity of freshwater bacterioplankton is widely known; however, there is minimal information on the functional diversity of the bacterial communities in these systems. Understanding the functional diversity of freshwater bacterial communities is important because heterotrophic ba...
Biofilms on tuff stones at historical sites: identification and removal by nonthermal effects of radiofrequencies.
A methodology aiming at identifying and removing biofilms from cultural heritage was applied to stones from tuff walls in historical sites. Identification of phototrophic encrusting microorganisms was carried out by optical and electron microscopy, as well as by molecular techniques (DNA analyses an...