abstract：:Bioremediation of contaminated sites has been accepted as an efficient and cheaper alternative to physicochemical means of remediation in several cases. Although chemotactic behaviour of many bacteria has been studied earlier and assays have been developed to study bacterial chemotaxis in semi-solid media, this phenom...

journal_title：Environmental microbiology

authors： Paul D,Singh R,Jain RK

更新日期：2006-10-01 00:00:00

abstract：:Besides 19 potential reductive dehalogenase genes, the genome of Dehalococcoides ethenogenes strain 195 contains over 60 genes annotated as encoding oxidoreductases, including five hydrogenase complexes and a formate dehydrogenase (Fdh). Using quantitative reverse transcriptase polymerase chain reaction, we found that...

journal_title：Environmental microbiology

authors： Morris RM,Sowell S,Barofsky D,Zinder S,Richardson R

更新日期：2006-09-01 00:00:00

abstract：:Changes in community structure and activity of the dissimilatory nitrate-reducing community were investigated across a glacier foreland in the Central Alps to gain insight into the successional pattern of this functional group and the driving environmental factors. Bulk soil and rhizosphere soil of Poa alpina was samp...

journal_title：Environmental microbiology

authors： Deiglmayr K,Philippot L,Tscherko D,Kandeler E

更新日期：2006-09-01 00:00:00

abstract：:Although bacterioplankton and phytoplankton are generally perceived as closely linked in marine systems, specific interactions between discrete bacterioplankton and phytoplankton populations are largely unknown. However, measurements of bacterioplankton distributions during phytoplankton blooms may indicate specific m...

journal_title：Environmental microbiology

authors： Morris RM,Longnecker K,Giovannoni SJ

更新日期：2006-08-01 00:00:00

abstract：:Chemolithoautotrophic nitrite oxidizers of the genus Nitrospira are a monophyletic but diverse group of organisms, are widely distributed in many natural habitats, and play a key role in nitrogen elimination during biological wastewater treatment. Phylogenetic analyses of cloned 16S rRNA genes and fluorescence in situ...

journal_title：Environmental microbiology

authors： Maixner F,Noguera DR,Anneser B,Stoecker K,Wegl G,Wagner M,Daims H

更新日期：2006-08-01 00:00:00

abstract：:Sulfate reduction accounts for about a half of the remineralization of organic carbon in anoxic marine shelf regions. Moreover, it was already a major microbial process in the very early ocean at least 2.4 billion years before the present. Here we demonstrate for the first time the capability of sulfate-reducing bacte...

journal_title：Environmental microbiology

authors： Blumenberg M,Krüger M,Nauhaus K,Talbot HM,Oppermann BI,Seifert R,Pape T,Michaelis W

更新日期：2006-07-01 00:00:00

abstract：:Pathogenic Vibrio parahaemolyticus strains producing either or both of a thermostable direct haemolysin (TDH) and a TDH-related haemolysin (TRH) encoded by tdh and trh genes, respectively, are isolated at a low rate from the environment. However, recently we observed that a considerable percentage of APW (alkaline pep...

journal_title：Environmental microbiology

authors： Parvathi A,Kumar HS,Bhanumathi A,Ishibashi M,Nishibuchi M,Karunasagar I,Karunasagar I

更新日期：2006-06-01 00:00:00

abstract：:LecA (PA-IL) is a cytotoxic lectin and adhesin produced by Pseudomonas aeruginosa which binds hydrophobic galactosides with high specificity and affinity. By using a lecA-egfp translation fusion and immunoblot analysis of the biofilm extracellular matrix, we show that lecA is expressed in biofilm-grown cells. In stati...

journal_title：Environmental microbiology

authors： Diggle SP,Stacey RE,Dodd C,Cámara M,Williams P,Winzer K

更新日期：2006-06-01 00:00:00

abstract：:The transcription of S-PM2 phage following infection of Synechococcus sp. WH7803, a marine cyanobacterium, was analysed by quantitative real-time PCR. Unlike the distantly related coliphage T4, there were only two (early and late) instead of three (early, middle and late) classes of transcripts during the developmenta...

journal_title：Environmental microbiology

authors： Clokie MR,Shan J,Bailey S,Jia Y,Krisch HM,West S,Mann NH

更新日期：2006-05-01 00:00:00

abstract：:Phosphonoacetate is regarded as an antiviral xenobiotic whose mineralization can be catalysed by an enzyme, phosphonoacetate hydrolase, encoded by the phnA gene. To date the enzyme's activity has been detected in only a limited number of bacteria. Its expression has been shown to occur in a manner independent of the p...

journal_title：Environmental microbiology

authors： Panas P,Ternan NG,Dooley JS,McMullan G

更新日期：2006-05-01 00:00:00

abstract：:Paclele Mici is a terrestrial mud volcano field located in the Carpathian Mountains (Romania), where thermal alteration of sedimentary organic compounds leads to methane, higher hydrocarbons and other petroleum compounds that are continuously released into the environment. The hydrocarbons represent potential substrat...

journal_title：Environmental microbiology

authors： Alain K,Holler T,Musat F,Elvert M,Treude T,Krüger M

更新日期：2006-04-01 00:00:00

abstract：:To determine whether the distribution of estuarine ammonia-oxidizing bacteria (AOB) was influenced by salinity, the community structure of betaproteobacterial ammonia oxidizers (AOB) was characterized along a salinity gradient in sediments of the Ythan estuary, on the east coast of Scotland, UK, by denaturant gradient...

journal_title：Environmental microbiology

authors： Freitag TE,Chang L,Prosser JI

更新日期：2006-04-01 00:00:00

abstract：:More effective control of membrane biofouling in membrane bioreactors (MBRs) lies in the fundamental understanding of the pioneer microorganisms responsible for surface colonization that leads to biofilm formation. In this study, the composition of the planktonic and sessile microbial communities inhabiting four labor...

journal_title：Environmental microbiology

authors： Zhang K,Choi H,Dionysiou DD,Sorial GA,Oerther DB

更新日期：2006-03-01 00:00:00

abstract：:The ability of the product of a desired reaction to activate a bacterial transcriptional regulator was exploited to develop genetic traps that render the catalytic activity born by a DNA clone into a selectable/scorable phenotype. We established this strategy with a system to expose the activity of dehydrochlorinases ...

journal_title：Environmental microbiology

authors： Mohn WW,Garmendia J,Galvao TC,de Lorenzo V

更新日期：2006-03-01 00:00:00

abstract：:Nitrous oxide (N(2)O) emission from soils is a major contributor to the atmospheric loading of this potent greenhouse gas. It is thought that autotrophic ammonia oxidizing bacteria (AOB) are a significant source of soil-derived N(2)O and a denitrification pathway (i.e. reduction of NO(2) (-) to NO and N(2)O), so-calle...

journal_title：Environmental microbiology

authors： Shaw LJ,Nicol GW,Smith Z,Fear J,Prosser JI,Baggs EM

更新日期：2006-02-01 00:00:00

abstract：:The sulfate-reducing culture N47 can utilize naphthalene or 2-methylnaphthalene as the sole carbon source and electron donor. Here we show that the initial reaction in the naphthalene degradation pathway is a methylation to 2-methylnaphthalene which then undergoes the subsequent oxidation to the central metabolite 2-n...

journal_title：Environmental microbiology

authors： Safinowski M,Meckenstock RU

更新日期：2006-02-01 00:00:00

abstract：:Novel hydrothermal activities accompanying effluent white smokers and elemental sulfur chimney structures at the north-east lava dome of the TOTO caldera depression in the Mariana Volcanic Arc have been explored and characterized by geochemical and microbiological surveys. White smoker hydrothermal fluids were observe...

journal_title：Environmental microbiology

authors： Nakagawa T,Takai K,Suzuki Y,Hirayama H,Konno U,Tsunogai U,Horikoshi K

更新日期：2006-01-01 00:00:00

abstract：:Stable carbon isotope fractionation during dichloromethane (DCM) degradation by methylotrophic bacteria was investigated under aerobic and nitrate-reducing conditions. The strains studied comprise several Hyphomicrobium strains, Methylobacterium, Methylopila, Methylophilus and Methylorhabdus spp. that are considered t...

journal_title：Environmental microbiology

authors： Nikolausz M,Nijenhuis I,Ziller K,Richnow HH,Kästner M

更新日期：2006-01-01 00:00:00

abstract：:Using DNA obtained from the metagenome of an anaerobic digestor in a waste water treatment plant, we constructed a gene library cloned in the wide host-range cosmid pLAFR3. One cosmid enabled Rhizobium leguminosarum to grow on ethanol as sole carbon and energy source, this being due to the presence of a gene, termed a...

journal_title：Environmental microbiology

authors： Wexler M,Bond PL,Richardson DJ,Johnston AW

更新日期：2005-12-01 00:00:00

abstract：:The Cape Floral Kingdom is an area of unique plant biodiversity in South Africa with exceptional concentrations of rare and endemic species and experiencing drastic habitat loss. Here we present the first molecular study of the microbial diversity associated with the rhizosphere soil of endemic plants of the Proteacea...

journal_title：Environmental microbiology

authors： Stafford WH,Baker GC,Brown SA,Burton SG,Cowan DA

更新日期：2005-11-01 00:00:00

abstract：:In recent years, the importance of the Gram-negative bacterium Stenotrophomonas as an opportunistic pathogen as well as in biotechnology has increased. The aim of the present study was to develop new methods for distinguishing between strains closely related to the potentially human pathogenic Stenotrophomonas maltoph...

journal_title：Environmental microbiology

authors： Ribbeck-Busch K,Roder A,Hasse D,de Boer W,Martínez JL,Hagemann M,Berg G

更新日期：2005-11-01 00:00:00

abstract：:Growth conditions for heterotrophic bacteria in the environment are characterized by low concentrations of carbon and energy sources and complex substrate mixtures. While mechanisms of starvation-survival in the absence of carbon substrates have been studied in considerable detail, information on the physiology of slo...

journal_title：Environmental microbiology

authors： Ihssen J,Egli T

更新日期：2005-10-01 00:00:00

abstract：:Symbiotic associations between microbes and invertebrates have resulted in some of the most unusual physiological and morphological adaptations that have evolved in the animal world. We document a new symbiosis between marine polychaetes of the genus Osedax and members of the bacterial group Oceanospirillales, known f...

journal_title：Environmental microbiology

authors： Goffredi SK,Orphan VJ,Rouse GW,Jahnke L,Embaye T,Turk K,Lee R,Vrijenhoek RC

更新日期：2005-09-01 00:00:00

abstract：:Manganese chemistry in soils is a function of complex, competing biotic and abiotic reactions. The role of soil-borne fungi in mediating these reactions is poorly understood. The objective of this article is to document direct observation of fungal Mn oxidation in soil under near in situ conditions, and to isolate, de...

journal_title：Environmental microbiology

authors： Thompson IA,Huber DM,Guest CA,Schulze DG

更新日期：2005-09-01 00:00:00

abstract：:Patterns of aerobic methane (CH4) oxidation and associated methanotroph community composition were investigated during the development of seasonal stratification in Mono Lake, California (USA). CH4 oxidation rates were measured using a tritiated CH4 radiotracer technique. Fluorescence in situ hybridization (FISH), den...

journal_title：Environmental microbiology

authors： Carini S,Bano N,LeCleir G,Joye SB

更新日期：2005-08-01 00:00:00

abstract：:Diverse methylotrophic bacteria were isolated from the tongue, and supra- and subgingival plaque in the mouths of volunteers and patients with periodontitis. One-carbon compounds such as dimethylsulfide in the mouth are likely to be used as growth substrates for these organisms. Methylotrophic strains of Bacillus, Bre...

journal_title：Environmental microbiology

authors： Anesti V,McDonald IR,Ramaswamy M,Wade WG,Kelly DP,Wood AP

更新日期：2005-08-01 00:00:00

abstract：:Among human faecal bacteria, many members of the Clostridium leptum subgroup are fibrolytic and butyrate producing microorganisms thereby contributing to processes important to colonic health. Yet this phylogenetic subgroup remains poorly described to date. To improve detection and description of members of the C. lep...

journal_title：Environmental microbiology

authors： Lay C,Sutren M,Rochet V,Saunier K,Doré J,Rigottier-Gois L

更新日期：2005-07-01 00:00:00

abstract：:Highly successful bacterial clones have the ability to effectively colonize environmental niches and patients. However, the factors which determine the complex interplay between the colonization of environmental niches and patients are mainly unknown. In this study we show that Pseudomonas aeruginosa clone C strains a...

journal_title：Environmental microbiology

authors： Römling U,Kader A,Sriramulu DD,Simm R,Kronvall G

更新日期：2005-07-01 00:00:00

abstract：:The microbial communities established in soil samples from an unsaturated, petroleum-contaminated zone and from an adjacent uncontaminated site were characterized by physiological and molecular approaches. Possible electron acceptors such as sulfate and nitrate had been completely depleted in these soil samples. Slurr...

journal_title：Environmental microbiology

authors： Kasai Y,Takahata Y,Hoaki T,Watanabe K

更新日期：2005-06-01 00:00:00

abstract：:Molecular approaches have revealed considerable diversity and uncultured novelty in natural prokaryotic populations, but not direct links between the new genotypes detected and ecosystem processes. Here we describe the influence of the structure of communities of ammonia-oxidizing bacteria on nitrogen cycling in micro...

journal_title：Environmental microbiology

authors： Webster G,Embley TM,Freitag TE,Smith Z,Prosser JI

更新日期：2005-05-01 00:00:00

abstract：:It is well recognized that a dynamic biofilm develops upon plant biomass in the herbivore gastrointestinal tract, but this component of the microbiome has not previously been specifically sampled, or directly compared with the biodiversity present in the planktonic fraction of digesta. In this study, the digesta colle...

journal_title：Environmental microbiology

authors： Larue R,Yu Z,Parisi VA,Egan AR,Morrison M

更新日期：2005-04-01 00:00:00

abstract：:In the rhizosphere, phosphorus (P) levels are low because of P uptake into the roots. Rhizobacteria live on carbon (C) exuded from roots, and may contribute to plant nutrition by liberating P from organic compounds such as phytates. We isolated over 300 phytate (Na-inositol hexa-phosphate; Na-IHP)-utilizing bacterial ...

journal_title：Environmental microbiology

authors： Unno Y,Okubo K,Wasaki J,Shinano T,Osaki M

更新日期：2005-03-01 00:00:00

abstract：:Zoospores of the eukaryotic green seaweed Ulva respond to bacterial N-acylhomoserine lactone (AHL) quorum sensing signal molecules for the selection of surface sites for permanent attachment. In this study we have investigated the production and destruction of AHLs in biofilms of the AHL-producing marine bacterium, Vi...

journal_title：Environmental microbiology

authors： Tait K,Joint I,Daykin M,Milton DL,Williams P,Cámara M

更新日期：2005-02-01 00:00:00

abstract：:Thin, vertically structured topsoil communities that become ecologically important in arid regions (biological soil crusts or BSCs) are responsible for much of the nitrogen inputs into pristine arid lands. We studied N(2) fixation and ammonium oxidation (AO) at subcentimetre resolution within BSCs from the Colorado Pl...

journal_title：Environmental microbiology

authors： Johnson SL,Budinoff CR,Belnap J,Garcia-Pichel F

更新日期：2005-01-01 00:00:00

abstract：:The anaerobic oxidation of methane (AOM) is one of the major sinks for methane on earth and is known to be mediated by at least two phylogenetically different groups of anaerobic methanotrophic Archaea (ANME-I and ANME-II). We present the first comparative in vitro study of the environmental regulation and physiology ...

journal_title：Environmental microbiology

authors： Nauhaus K,Treude T,Boetius A,Krüger M

更新日期：2005-01-01 00:00:00

abstract：:This study compared bacterial biofilm and planktonic cell susceptibility to metal toxicity by evaluating the minimum inhibitory concentration (MIC), the planktonic minimum bactericidal concentration (MBC), and minimum biofilm eradication concentration (MBEC) using the MBEC device. In total, 17 metal cations and oxyani...

journal_title：Environmental microbiology

authors： Harrison JJ,Ceri H,Stremick CA,Turner RJ

更新日期：2004-12-01 00:00:00

abstract：:A method was developed to assess the genetic structure of Gaeumannomyces graminis var. tritici (Ggt) populations and test the hypothesis of an association between disease level in the field with changes in pathogen populations. A long-term wheat monoculture experiment, established since 1994, generated different take-...

journal_title：Environmental microbiology

authors： Lebreton L,Lucas P,Dugas F,Guillerm AY,Schoeny A,Sarniguet A

更新日期：2004-11-01 00:00:00

abstract：:Soda lakes are an environment with an unusually high pH and often high salinity. To identify the active methanotrophs in the Soda lake sediments, sediment slurries were incubated with a 10% (v/v) (13)CH(4) headspace and the (13)C-labelled DNA was subsequently extracted from these sediments following CsCl density gradi...

journal_title：Environmental microbiology

authors： Lin JL,Radajewski S,Eshinimaev BT,Trotsenko YA,McDonald IR,Murrell JC

更新日期：2004-10-01 00:00:00

abstract：:To obtain new amidases of biocatalytic relevance, we used microorganisms indigenous to different types of soil and sediment as a source of DNA for the construction of environmental gene banks, following two different strategies. In one case, DNA was isolated from soil without preceding cultivation to preserve a high d...

journal_title：Environmental microbiology

authors： Gabor EM,de Vries EJ,Janssen DB

更新日期：2004-09-01 00:00:00

abstract：:Conditions were developed for the reproducible production, isolation and characterization of a novel microbial extracellular polysaccharide believed to be involved in transient viscous bulking at an industrial wastewater treatment plant. The exopolysaccharide was extracted from cell-free culture supernatants of Thauer...

journal_title：Environmental microbiology

authors： Allen MS,Welch KT,Prebyl BS,Baker DC,Meyers AJ,Sayler GS

更新日期：2004-08-01 00:00:00