Abstract:
:We undertook a large-scale epidemiological survey of commensal Escherichia coli in Trois-Sauts, an isolated village located in the south of French Guiana where human population exchanges are restricted and source of antibiotics controlled. Stools from 162 Wayampi Amerindians and rectal swabs from 33 human associated and 198 wild animals were collected in the close proximity of the village. The prevalence of E. coli was decreasing from humans (100%) to human associated (64%) and wild (45%) animals. A clear genetic structure between these three E. coli populations was observed with human strains belonging very rarely to B2 phylogroup (3.7%), exhibiting few virulence genes and bacteriocins but being antibiotic resistant whereas wild animal strains were characterized by 46.1% of B2 phylogroup belonging, with very unique and infrequent sequence types, numerous extraintestinal genes and bacteriocins but no antibiotic resistance; the human-associated animal strains being intermediate. Furthermore, an unexpected genetic diversity was observed among the strains, as the housekeeping gene nucleotide diversity per site of the Trois-Sauts's strains was higher than the one of reference strains representative of the known species diversity. The existence of such E. coli structured phylogenetic diversity within various hosts of a single localization has never been reported.
journal_name
Environ Microbiol Repjournal_title
Environmental microbiology reportsauthors
Lescat M,Clermont O,Woerther PL,Glodt J,Dion S,Skurnik D,Djossou F,Dupont C,Perroz G,Picard B,Catzeflis F,Andremont A,Denamur Edoi
10.1111/j.1758-2229.2012.00374.xsubject
Has Abstractpub_date
2013-02-01 00:00:00pages
49-57issue
1issn
1758-2229journal_volume
5pub_type
杂志文章abstract::The community composition of bacteria with highly dynamic abundance and activity was observed to be with low variability in a shallow lake sediment with frequent physical disturbance. This suggests that physical disturbance did not create more niches and did not lead to highly variable bacterial community. The major p...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2010.00221.x
更新日期:2011-04-01 00:00:00
abstract::Organohalide respiring bacteria (ORB) are capable of utilising organohalides as electron acceptors for the generation of cellular energy and consequently play an important role in the turnover of natural and anthropogenically-derived organohalides. In this study, the response of a Dehalobacter sp. strain UNSWDHB to th...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12444
更新日期:2016-10-01 00:00:00
abstract::Anaerobic ammonium-oxidizing (anammox) bacteria affiliated with the genus 'Candidatus Scalindua' are responsible for significant nitrogen loss in oceans, and thus their ecophysiology is of great interest. Here, we enriched a marine anammox bacterium, 'Ca. S. japonica' from a Hiroshima bay sediment in Japan, and compar...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12586
更新日期:2017-10-01 00:00:00
abstract::Although dissimilatory sulfate-reducing bacteria (SRB) are generally described as strictly anaerobic organisms with regard to growth, several reports have shown that some SRB, particularly Desulfovibrio species, are quite resistant to O2 . For example, SRB remain viable in many aerobic environments while some even red...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12479
更新日期:2016-12-01 00:00:00
abstract::Aspergillus fumigatus and free-living amoebae are common inhabitants of soil. Mechanisms of A. fumigatus to circumvent the amoeba's digestion may facilitate overcoming the vertebrate macrophage defence mechanisms. We performed co-culture experiments using A. fumigatus conidia and the amoeba Acanthamoeba castellanii. A...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12082
更新日期:2013-12-01 00:00:00
abstract::Many species in the order Bacillales form a specialized cell type called a spore that is resistant to a range of environmental stresses. Transmission electron microscopy (TEM) reveals that the spore is comprised of a series of concentric shells, surrounding an interior compartment harbouring the spore DNA. The outermo...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12713
更新日期:2019-04-01 00:00:00
abstract::Pyrrolysine (Pyl), the 22nd canonical amino acid, is only decoded and synthesized by a limited number of organisms in the domains Archaea and Bacteria. Pyl is encoded by the amber codon UAG, typically a stop codon. To date, all known Pyl-decoding archaea are able to carry out methylotrophic methanogenesis. The functio...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12545
更新日期:2017-08-01 00:00:00
abstract::The metabolism of cholesterol in Mycobacterium smegmatis mc(2) 155 has been investigated by using a microarray approach. The transcriptome of M. smegmatis growing in cholesterol was compared with that of cells growing in glycerol as the sole carbon and energy sources during the middle exponential phase. Microarray ana...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2011.00314.x
更新日期:2012-04-01 00:00:00
abstract::The TM6 phylum belongs to the so-called microbial dark matter that gathers uncultivated bacteria detected only via DNA sequencing. Recently, the genome sequence of a TM6 bacterium (TM6SC1) has led to suggest that this bacterium would adopt an endosymbiotic life. In the present paper, free-living amoebae bearing a TM6 ...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12343
更新日期:2015-12-01 00:00:00
abstract::Copper is an essential element but in excess is highly toxic and therefore cytoplasmic levels must be tightly controlled. Member of the genus Burkholderia are highly resistant to various heavy metals and are often isolated from acidic soils where copper bioavailability is high. In this study, we employed transposon se...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12828
更新日期:2020-04-01 00:00:00
abstract::While there are substantial studies suggesting that characteristics of wine are related to regional microbial community composition (microbial terroir), there has been little discussion about what factors affect variation in regional microbial community composition. In this study, we compared the microbial community c...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12589
更新日期:2017-12-01 00:00:00
abstract::Manganese (Mn) and iron (Fe)-enriched sediment layers were discovered in Lake Superior within, above and below the oxic-anoxic interface. While the role of bacteria in redox reactions with Mn is known to be significant, little information exists about indigenous microbial communities in many freshwater environments. T...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12364
更新日期:2016-04-01 00:00:00
abstract::Interpretation of bacteriohopanepolyol (BHP) biomarkers tracing microbiological processes in modern and ancient sediments relies on understanding environmental controls of production and preservation. BHPs from methanotrophs (35-aminoBHPs) were studied in methane-amended aerobic river-sediment incubations at different...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12570
更新日期:2017-10-01 00:00:00
abstract::For many centuries, hops (Humulus lupulus L.) have been used as essential ingredient in beers, providing the typical bitterness and hoppy flavour. However, the last few years the plant has gained increasing attention as a source of prenylflavonoids and in 1999, 8-prenylnaringenin (8-PN) was identified as the most pote...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2009.00011.x
更新日期:2009-04-01 00:00:00
abstract::The increase in the areal extent of the subtropical gyres over the past decade has been attributed to a global tendency towards increased water-column stratification. Here, we examine how vertical stratification governs the community structure of the picophytoplankton that dominate these vast marine ecosystems. We ana...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2011.00241.x
更新日期:2011-08-01 00:00:00
abstract::The interaction between human protozoan parasites and the immune cells of bivalves, that can accumulate them, is poorly described. The purpose of this study is to consider the mechanisms of action of some of these protozoa on zebra mussel haemocytes, by evaluating their cytotoxic potential. Haemocytes were exposed to ...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12720
更新日期:2019-06-01 00:00:00
abstract::Biofilm communities in the euphotic zone of aquatic habitats comprise photoautotrophic microorganisms, such as diatoms, green algae and cyanobacteria, which produce the organic carbon that fuels the life of a heterotrophic contingent of microorganisms, mostly bacteria. Such photoautotrophic-heterotrophic mixed-species...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2011.00315.x
更新日期:2012-02-01 00:00:00
abstract::Rhizobacteria with biocontrol ability exploit a range of mechanisms to compete successfully with other microorganisms and to ensure their growth and survival in the rhizosphere, ultimately promoting plant growth. The rhizobacterium Serratia plymuthica AS13 is able to promote oilseed rape growth and improve seedling su...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12203
更新日期:2015-02-01 00:00:00
abstract::Infection of honeybees by the microsporidian Nosema ceranae is considered to be one of the factors underlying the increased colony losses and decreased honey production seen in recent years. However, these effects appear to differ in function of the climatic zone, the distinct beekeeping practices and the honeybee spe...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12133
更新日期:2014-08-01 00:00:00
abstract::Several bacterial strains of the Pseudomonas genus provide plant growth stimulation, plant protection against pests or bioremediation. Among these bacteria, P. fluorescens Pf29Arp reduces the severity of take-all, a disease caused by the pathogenic fungus Gaeumannomyces graminis var. tritici (Ggt) on wheat roots. In t...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12048
更新日期:2013-06-01 00:00:00
abstract::In Pseudomonas species, production of secondary metabolites and exoenzymes is regulated by the GacS/GacA two-component regulatory system. In Pseudomonas fluorescens SBW25, mutations in the Gac-system cause major transcriptional changes and abolished production of the lipopeptide viscosin and of an exoprotease. In cont...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12231
更新日期:2015-02-01 00:00:00
abstract::One-component systems (OCSs) and cytosolic two-component regulatory systems (TCSs) appear to share the same biological function, which consists in the transcriptional control in response to the cellular concentration of signal molecules. However, cytosolic TCSs as compared with OCSs represent a genetic and metabolic b...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2009.00020.x
更新日期:2009-06-01 00:00:00
abstract::Rice plants play a key role in regulating methane emissions from paddy fields by affecting both underlying processes: methane production and oxidation. Specific differences were reported for methane oxidation rates; however, studies on the bacterial communities involved are rare. Here, we analysed the methanotrophic c...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2011.00251.x
更新日期:2011-10-01 00:00:00
abstract::Bacterioplankton play a critical role in primary production, carbon cycling, and nutrient cycling in the oligotrophic ocean. To investigate the effect of elevated CO2 and warming on the composition and function of bacterioplankton communities in oligotrophic waters, we performed two trace-metal clean deck board incuba...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12844
更新日期:2020-08-01 00:00:00
abstract::Vibrio vulnificus, an inhabitant of marine and estuarine environments around the world, is the leading cause of reported seafood-related deaths in the United States. Disease is caused by opaque colony-forming strains that produce capsular polysaccharide, loss of which results in an unencapsulated translucent phenotype...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12318
更新日期:2015-10-01 00:00:00
abstract::Cyanobacteria, phototrophic organisms performing oxygenic photosynthesis, must adapt their metabolic processes to important environmental challenges, like those imposed by the succession of days and nights. Not surprisingly, certain regulatory proteins are found exclusively in this phylum. One of these unique factors,...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12688
更新日期:2019-08-01 00:00:00
abstract::Tunicates are useful models for exploring microbiomes because they have an innate immune system resembling that of chordates. Automated ribosomal RNA intergenic spacer analysis and High-Throughput Sequencing were used to compare the tunic microbiomes of Ciona robusta (formerly Ciona intestinalis type A), Ciona savigny...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12391
更新日期:2016-08-01 00:00:00
abstract::Bacteria can manipulate their surrounding environment through the secretion of proteins into other living organisms and into the extracellular milieu. In Gram stain negative bacteria this process is mediated by different types of secretion systems from type I through type VI secretion system (T1SS-T6SS). In this study...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2012.00394.x
更新日期:2013-02-01 00:00:00
abstract::Pseudomonas aeruginosa produces the toxic secondary metabolite hydrogen cyanide (HCN) at high cell population densities and low aeration. Here, we investigated the impact of HCN as a signal in cell-cell communication by comparing the transcriptome of the wild-type strain PAO1 to that of an HCN-negative mutant under cy...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/1758-2229.12105
更新日期:2014-02-01 00:00:00
abstract::The microorganisms responsible for anaerobic oxidation of methane (AOM) coupled to denitrification have not been clearly elucidated. Three recent publications suggested it can be achieved by a denitrifying bacterium with or without the involvement of anaerobic methanotrophic archaea. A key factor limiting the progress...
journal_title:Environmental microbiology reports
pub_type: 杂志文章
doi:10.1111/j.1758-2229.2009.00083.x
更新日期:2009-10-01 00:00:00