Gene Expression during Survival of Escherichia coli O157:H7 in Soil and Water

The in vitro survival of Escherichia coli O157:H7 at 15∘C under two experimental conditions (sterile soil and sterile natural water) was examined. DNA microarrays of the entire set of E. coli O157:H7 genes were used to measure the genomic expression patterns after 14 days. Although the populations...

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Main Authors: Ashley D. Duffitt, Robert T. Reber, Andrew Whipple, Christian Chauret
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:International Journal of Microbiology
Online Access:http://dx.doi.org/10.1155/2011/340506
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author Ashley D. Duffitt
Robert T. Reber
Andrew Whipple
Christian Chauret
author_facet Ashley D. Duffitt
Robert T. Reber
Andrew Whipple
Christian Chauret
author_sort Ashley D. Duffitt
collection DOAJ
description The in vitro survival of Escherichia coli O157:H7 at 15∘C under two experimental conditions (sterile soil and sterile natural water) was examined. DNA microarrays of the entire set of E. coli O157:H7 genes were used to measure the genomic expression patterns after 14 days. Although the populations declined, some E. coli O157:H7 cells survived in sterile stream water up to 234 days and in sterile soil for up to 179 days. Cells incubated in soil microcosms for 14 days expressed genes for antibiotic resistance, biosynthesis, DNA replication and modification, metabolism, phages, transposons, plasmids, pathogenesis and virulence, antibiotic resistance, ribosomal proteins, the stress response, transcription, translation, and transport and binding proteins at significantly higher levels than cells grown in Luria broth. These results suggest that E. coli O157:H7 may develop a different phenotype during transport through the environment. Furthermore, this pathogen may become more resistant to antibiotics making subsequent infections more difficult to treat.
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institution Kabale University
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spelling doaj-art-0d183d12471e4abd994b00c894fac6192025-02-03T01:01:35ZengWileyInternational Journal of Microbiology1687-918X1687-91982011-01-01201110.1155/2011/340506340506Gene Expression during Survival of Escherichia coli O157:H7 in Soil and WaterAshley D. Duffitt0Robert T. Reber1Andrew Whipple2Christian Chauret3Earth and Environmental Sciences, Taylor University, Upland, IN 46989, USAEarth and Environmental Sciences, Taylor University, Upland, IN 46989, USAEarth and Environmental Sciences, Taylor University, Upland, IN 46989, USADepartment of Natural, Information, and Mathematical Sciences, IN University Kokomo, 2300 South Washington Street, Kokomo, Indiana 46904-9003, USAThe in vitro survival of Escherichia coli O157:H7 at 15∘C under two experimental conditions (sterile soil and sterile natural water) was examined. DNA microarrays of the entire set of E. coli O157:H7 genes were used to measure the genomic expression patterns after 14 days. Although the populations declined, some E. coli O157:H7 cells survived in sterile stream water up to 234 days and in sterile soil for up to 179 days. Cells incubated in soil microcosms for 14 days expressed genes for antibiotic resistance, biosynthesis, DNA replication and modification, metabolism, phages, transposons, plasmids, pathogenesis and virulence, antibiotic resistance, ribosomal proteins, the stress response, transcription, translation, and transport and binding proteins at significantly higher levels than cells grown in Luria broth. These results suggest that E. coli O157:H7 may develop a different phenotype during transport through the environment. Furthermore, this pathogen may become more resistant to antibiotics making subsequent infections more difficult to treat.http://dx.doi.org/10.1155/2011/340506
spellingShingle Ashley D. Duffitt
Robert T. Reber
Andrew Whipple
Christian Chauret
Gene Expression during Survival of Escherichia coli O157:H7 in Soil and Water
International Journal of Microbiology
title Gene Expression during Survival of Escherichia coli O157:H7 in Soil and Water
title_full Gene Expression during Survival of Escherichia coli O157:H7 in Soil and Water
title_fullStr Gene Expression during Survival of Escherichia coli O157:H7 in Soil and Water
title_full_unstemmed Gene Expression during Survival of Escherichia coli O157:H7 in Soil and Water
title_short Gene Expression during Survival of Escherichia coli O157:H7 in Soil and Water
title_sort gene expression during survival of escherichia coli o157 h7 in soil and water
url http://dx.doi.org/10.1155/2011/340506
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