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Title of Journal: Microb Ecol

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Abbravation: Microbial Ecology

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Springer US

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1432-184X

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Patterns of MultiAntibioticResistant Emphasis T

Authors: J V McArthur D E Fletcher R Cary Tuckfield C BakerAustin
Publish Date: 2015/11/03
Volume: 72, Issue: 4, Pages: 840-850
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Abstract

A growing body of evidence suggests that contaminated environments may harbor a greater proportion of antibioticresistant microorganisms than unpolluted reference sites Here we report the screening of 427 Escherichia coli strains isolated from 11 locations on nine streams draining the US Department of Energy’s Savannah River Site against a panel of five antibiotics Streams were chosen to capture a wide range of watersheds from minimally disturbed to highly impacted Overall higher levels of resistance were found in waterborne E coli that also generally exhibited low spatial variability However 3 of 11 locations also demonstrated elevated resistance levels in sediments Two of these occurred in highly disturbed tributaries with no obvious sources of antimicrobials To further investigate these patterns we screened a subset of isolates obtained from three streams against 23 antibiotics or antibiotic combinations A large proportion of these isolates 40  demonstrated resistance to 10 or more antimicrobials suggesting that environmental multiantibiotic resistance may be prevalent in this bacterial commensal Only 4 of 87 viable isolates were tested susceptible to all 23 antibiotics and combinations Among these multiantibioticresistant isolates several demonstrated resistance to all structural classes of antimicrobial agents tested including frontline antibiotics such as gatifloxacin and ciprofloxacin

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  2. Characterization of Bacterial Communities in Sediments Receiving Various Wastewater Effluents with High-Throughput Sequencing Analysis
  3. Bacterial Community Dynamics during Bioremediation of Diesel Oil-Contaminated Antarctic Soil
  4. Assessing the Contamination Potential of Freshly Extracted Escherichia coli Biofilm Cells by Impedancemetry
  5. Denitrifying Bacterial Community Composition Changes Associated with Stages of Denitrification in Oxygen Minimum Zones
  6. Is There a Size Limit for Cosmopolitan Distribution in Free-Living Microorganisms? A Biogeographical Analysis of Testate Amoebae from Polar Areas
  7. Vegetation Affects the Relative Abundances of Dominant Soil Bacterial Taxa and Soil Respiration Rates in an Upland Grassland Soil
  8. Epilithic Algae Distribution Along a Chemical Gradient in a Naturally Acidic River, Río Agrio (Patagonia, Argentina)
  9. Distribution of Cren- and Euryarchaeota in Scots Pine Mycorrhizospheres and Boreal Forest Humus
  10. Feasibility of Removing Surface Deposits on Stone Using Biological and Chemical Remediation Methods
  11. Molecular Characterization and Geological Microenvironment of a Microbial Community Inhabiting Weathered Receding Shale Cliffs
  12. Previously Undescribed Plasmids Recovered from Activated Sludge Confer Tetracycline Resistance and Phenotypic Changes to Acinetobacter oleivorans DR1
  13. Morphological and Phylogenetic Analysis of Fusarium solani Species Complex in Malaysia
  14. Culturable Airborne Bacteria in Outdoor Environments in Beijing, China
  15. Study of the Degradation Activity and the Strategies to Promote the Bioavailability of Phenanthrene by Sphingomonas paucimobilis Strain 20006FA
  16. Ecological Characterisation of the Colonic Microbiota in Arctic and Sub-Arctic Seals
  17. Isolation and Identification of the Microbiota of Danish Farmhouse and Industrially Produced Surface-Ripened Cheeses
  18. Effects of Experimental Lead Pollution on the Microbial Communities Associated with Sphagnum fallax (Bryophyta)
  19. Habitat Heterogeneity and Associated Microbial Community Structure in a Small-Scale Floodplain Hyporheic Flow Path
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  24. Erratum to: Influence of Deglaciation on Microbial Communities in Marine Sediments off the Coast of Svalbard, Arctic Circle
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