Roles of type IV pili, flagellum-mediated motility and extracellular DNA in the formation of mature multicellular structures in Pseudomonas aeruginosa biofilms.

abstract：:Biofilms are thin layers of bacteria embedded within a slime matrix that live on surfaces. They are ubiquitous in nature and responsible for many medical and dental infections, industrial fouling and are also evident in ancient fossils. A biofilm structure is shaped by growth, detachment and response to mechanical for...

journal_title：Environmental microbiology

authors： Fabbri S,Li J,Howlin RP,Rmaile A,Gottenbos B,De Jager M,Starke EM,Aspiras M,Ward MT,Cogan NG,Stoodley P

更新日期：2017-11-01 00:00:00

abstract：:Ruegeria (previously Silicibacter) pomeroyi DSS-3, a marine roseobacter, can catabolize dimethylsulfoniopropionate (DMSP), a compatible solute that is made in large amounts by marine plankton and algae. This strain was known to demethylate DMSP via a demethylase, encoded by the dmdA gene, and it can also cleave DMSP, ...

journal_title：Environmental microbiology

authors： Todd JD,Curson AR,Kirkwood M,Sullivan MJ,Green RT,Johnston AW

更新日期：2011-02-01 00:00:00

abstract：:Concatenated sequence analysis with 16S rRNA, rpoB and fusA genes identified a bacterial strain (IRBG74) isolated from root nodules of the aquatic legume Sesbania cannabina as a close relative of the plant pathogen Rhizobium radiobacter (syn. Agrobacterium tumefaciens). However, DNA:DNA hybridization with R. radiobact...

journal_title：Environmental microbiology

authors： Cummings SP,Gyaneshwar P,Vinuesa P,Farruggia FT,Andrews M,Humphry D,Elliott GN,Nelson A,Orr C,Pettitt D,Shah GR,Santos SR,Krishnan HB,Odee D,Moreira FM,Sprent JI,Young JP,James EK

更新日期：2009-10-01 00:00:00

abstract：:The activated sludge process relies on the formation of strong microbial flocs. The knowledge about dominant floc-forming bacteria is at present very limited, especially from a phylogenetic perspective. In this study, numerous microcolonies in the activated sludge flocs were found to be targeted by a Betaproteobacteri...

journal_title：Environmental microbiology

authors： Thomsen TR,Nielsen JL,Ramsing NB,Nielsen PH

更新日期：2004-05-01 00:00:00

abstract：:Fruiting body development and carotenoid production are light-induced in Cordyceps militaris. Our previous studies have shown that two blue-light receptors, CmWC-1 and CmCRY-DASH, regulate fruiting body development and secondary metabolism. However, the photosensory system of C. militaris remains unclear. Here, gene d...

journal_title：Environmental microbiology

authors： Zhang J,Wang F,Yang Y,Wang Y,Dong C

更新日期：2020-01-01 00:00:00

abstract：:Regulatory roles of the basic leucine zipper (bZIP) transcription factors (TFs) in fungi have been identified in diverse cellular processes such as development, nutrient utilization and various stress responses. In this study, the 22 Magnaporthe oryzae genes encoding bZIP TFs were systematically characterized. Phyloge...

journal_title：Environmental microbiology

authors： Kong S,Park SY,Lee YH

更新日期：2015-04-01 00:00:00

abstract：:Many plant-associated fungi host endosymbiotic endobacteria with reduced genomes. While endobacteria play important roles in these tri-partite plant-fungal-endobacterial systems, the active physiology of fungal endobacteria has not been characterized extensively by systems biology approaches. Here, we use integrated p...

journal_title：Environmental microbiology

authors： Li Z,Yao Q,Dearth SP,Entler MR,Castro Gonzalez HF,Uehling JK,Vilgalys RJ,Hurst GB,Campagna SR,Labbé JL,Pan C

更新日期：2017-03-01 00:00:00

abstract：:The opportunistic human pathogen Acinetobacter baumannii is one of the leading causes of nosocomial infections. The high prevalence of multidrug-resistant strains, a high adaptability to changing environments and an overall pronounced stress resistance contribute to persistence and spread of the bacteria in hospitals ...

journal_title：Environmental microbiology

authors： Zeidler S,Müller V

更新日期：2020-04-01 00:00:00

abstract：:Methanogenesis was characterized in hypersaline microbial mats from Guerrero Negro, Baja California Sur, Mexico both in situ and after long-term manipulation in a greenhouse environment. Substrate addition experiments indicate methanogenesis to occur primarily through the catabolic demethylation of non-competitive sub...

journal_title：Environmental microbiology

authors： Smith JM,Green SJ,Kelley CA,Prufert-Bebout L,Bebout BM

更新日期：2008-02-01 00:00:00

abstract：:Bacteria in the SAR11 clade are highly abundant in marine surface waters, but currently little is known about the carbon compounds that support these large heterotrophic populations. To better understand the carbon requirements of these organisms, we conducted a multiphasic exploration of carbohydrate utilization amon...

journal_title：Environmental microbiology

authors： Schwalbach MS,Tripp HJ,Steindler L,Smith DP,Giovannoni SJ

更新日期：2010-02-01 00:00:00

abstract：:Sub-seafloor sediments are populated by large numbers of microbial cells but not much is known about their metabolic activities, growth rates and carbon assimilation pathways. Here we introduce a new method enabling the sensitive detection of microbial lipid production and the distinction of auto- and heterotrophic ca...

journal_title：Environmental microbiology

authors： Wegener G,Bausch M,Holler T,Thang NM,Prieto Mollar X,Kellermann MY,Hinrichs KU,Boetius A

更新日期：2012-06-01 00:00:00

abstract：:We compared the composition of eukaryotic communities using two genetic markers (18S rRNA V4 and V9 regions) at 27 sites sampled during Ocean Sampling Day 2014, with a focus on photosynthetic groups and, more specifically green algae (Chlorophyta). Globally, the V4 and V9 regions of the 18S rRNA gene provided similar ...

journal_title：Environmental microbiology

authors： Tragin M,Zingone A,Vaulot D

更新日期：2018-02-01 00:00:00

abstract：:High-throughput sequencing (HTS) surveys, among the most common approaches currently used in environmental microbiology, require reliable reference databases to be correctly interpreted. The EukRef Initiative (eukref.org) is a community effort to manually screen available small subunit (SSU) rRNA gene sequences and pr...

journal_title：Environmental microbiology

authors： Boscaro V,Santoferrara LF,Zhang Q,Gentekaki E,Syberg-Olsen MJ,Del Campo J,Keeling PJ

更新日期：2018-06-01 00:00:00

abstract：:Many bacterial pathogens rely on quorum sensing to control virulence gene expression. Based on numerous experiments conducted under well-defined conditions, quorum sensing interference is considered as a promising strategy to tackle infections and thus might have the potential to (partially) replace antibiotics. Despi...

journal_title：Environmental microbiology

authors： Liu Y,Qin Q,Defoirdt T

更新日期：2018-11-01 00:00:00

abstract：:Phage predation is one of the key forces that shape genetic diversity in bacterial genomes. Phages are also believed to act as modulators of the microbiota composition and, consequently, as agents that drive bacterial speciation in complex bacterial communities. Very little is known about the occurrence and genetic va...

journal_title：Environmental microbiology

authors： Lugli GA,Milani C,Turroni F,Tremblay D,Ferrario C,Mancabelli L,Duranti S,Ward DV,Ossiprandi MC,Moineau S,van Sinderen D,Ventura M

更新日期：2016-07-01 00:00:00

abstract：:In hostile environments diversity within a bacterial population may be beneficial for the fitness of the microbial community as a whole. Here we analysed the population diversity of Staphylococcus aureus in infecting and colonizing situations. In the study, performed independently in two German centres, the heterogene...

journal_title：Environmental microbiology

authors： Goerke C,Gressinger M,Endler K,Breitkopf C,Wardecki K,Stern M,Wolz C,Kahl BC

更新日期：2007-12-01 00:00:00

abstract：:Our lower gastrointestinal tract plays host to a vast consortium of microbes, known as the human gut microbiota (HGM). The HGM thrives on a complex and diverse range of glycan structures from both dietary and host sources, the breakdown of which requires the concerted action of cohorts of carbohydrate-active enzymes (...

journal_title：Environmental microbiology

authors： Briggs JA,Grondin JM,Brumer H

更新日期：2021-01-01 00:00:00

abstract：:Biomass production for bioenergy may change soil microbes and influence ecosystem properties. To explore the impact of different bioenergy cropping systems on soil microorganisms, the compositions and quantities of soil microbial communities (16S rRNA gene) and N-cycling functional groups (nifH, bacterial amoA, archae...

journal_title：Environmental microbiology

authors： Mao Y,Yannarell AC,Davis SC,Mackie RI

更新日期：2013-03-01 00:00:00

abstract：:Eco-physiological variation and local adaptation are key issues in microbial ecology. Here, we investigated the thermal adaptation of 19 strains of the same Spumella morphospecies (Chrysophyceae, Heterokonta). In order to test for local adaptation and the existence of specific ecotypes we analysed growth rates of thes...

journal_title：Environmental microbiology

authors： Boenigk J,Jost S,Stoeck T,Garstecki T

更新日期：2007-03-01 00:00:00

abstract：:Major concern in the Mixed Crop-Livestock (MCL) farms, in which livestock and vegetables grown closely in the same facility, is cross-contamination of zoonotic bacterial pathogens especially Salmonella. To investigate the distribution of Salmonella serovars in MCL and their products, a total of 1287 pre-harvest sample...

journal_title：Environmental microbiology

authors： Peng M,Salaheen S,Almario JA,Tesfaye B,Buchanan R,Biswas D

更新日期：2016-05-01 00:00:00

abstract：:The influence of geographic distribution and type of habitat on the molecular epidemiology of ciprofloxacin resistant Escherichia coli was investigated. Ciprofloxacin resistant E. coli from wastewater, urban water with faecal contamination and faeces of gulls, pigeons and birds of prey, from Portugal, Spain and Sweden...

journal_title：Environmental microbiology

authors： Vredenburg J,Varela AR,Hasan B,Bertilsson S,Olsen B,Narciso-da-Rocha C,Bonnedahl J,Stedt J,Da Costa PM,Manaia CM

更新日期：2014-04-01 00:00:00

abstract：:Fungi can be highly efficient biogeochemical agents and accumulators of soluble and particulate forms of metals. This work aims to understand some of the physico-chemical mechanisms involved in toxic metal transformations focusing on the speciation of metals accumulated by fungi and mycorrhizal associations. The amorp...

journal_title：Environmental microbiology

authors： Fomina M,Charnock J,Bowen AD,Gadd GM

更新日期：2007-02-01 00:00:00

abstract：:Microbial communities interplay with their environment through their functional traits that can be a response or an effect on the environment. Here, we explore how a functional trait-the decomposition of organic matter, can be addressed based on genetic markers and how the expression of these markers reflect ecologica...

journal_title：Environmental microbiology

authors： Barbi F,Kohler A,Barry K,Baskaran P,Daum C,Fauchery L,Ihrmark K,Kuo A,LaButti K,Lipzen A,Morin E,Grigoriev IV,Henrissat B,Lindahl BD,Martin F

更新日期：2020-03-01 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 high genomic G+C group of Actinobacteria possesses a variety of physiological and metabolic properties, and exhibits diverse lifestyles and ecological distribution. In recent years, Actinobacteria have been found to frequently dominate samples obtained from freshwater samples. Furthermore, phylogenetic analyses ha...

journal_title：Environmental microbiology

authors： Philosof A,Sabehi G,Béjà O

更新日期：2009-12-01 00:00:00

abstract：:Heterocyst-forming cyanobacteria are filamentous organisms that perform oxygenic photosynthesis and CO2 fixation in vegetative cells and nitrogen fixation in heterocysts, which are formed under deprivation of combined nitrogen. These organisms can acclimate to use different sources of nitrogen and respond to different...

journal_title：Environmental microbiology

authors： Herrero A,Flores E

更新日期：2019-01-01 00:00:00

abstract：:Bacteriophages, the viruses that infect bacteria, are the most abundant biological entities in the biosphere and play a key role in global biogeochemical cycling. All T4-type bacteriophage isolates tested so far have a conserved genetic module that encodes the virion components including gene 23 (g23), the major capsi...

journal_title：Environmental microbiology

authors： Jia Z,Ishihara R,Nakajima Y,Asakawa S,Kimura M

更新日期：2007-04-01 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：:Located in the Northern Territory of Australia, Ranger uranium mine is directly adjacent to the UNESCO World Heritage listed Kakadu National Park, with rehabilitation targets needed to ensure the site can be incorporated into the park following the mine's closure in 2026. This study aimed to understand the impact of u...

journal_title：Environmental microbiology

authors： Sutcliffe B,Chariton AA,Harford AJ,Hose GC,Greenfield P,Elbourne LDH,Oytam Y,Stephenson S,Midgley DJ,Paulsen IT

更新日期：2017-08-01 00:00:00

abstract：:Sea ice microbial community structure affects carbon and nutrient cycling in polar seas, but its susceptibility to changing environmental conditions is not well understood. We studied the eukaryotic microbial community in sea ice cores recovered near Point Barrow, AK in May 2006 by documenting the composition of the c...

journal_title：Environmental microbiology

authors： Eddie B,Juhl A,Krembs C,Baysinger C,Neuer S

更新日期：2010-03-01 00:00:00