Abstract:
:Commercial turkey flocks in North Carolina have been found to be colonized frequently with Campylobacter coli strains that are resistant to several antimicrobials (tetracycline, streptomycin, erythromycin, kanamycin, and ciprofloxacin/nalidixic acid). Such strains have been designated multidrug resistant (MDR). However, the population structure of MDR C. coli from turkeys remains poorly characterized. In this study, an analysis of multilocus sequence typing (MLST)-based sequence types (STs) of 59 MDR strains from turkeys revealed that the majority of these strains corresponded to one of 14 different STs, with three STs accounting for 41 (69%) of the strains. The major STs were turkey specific, and most (87%) of the strains with these STs were resistant to the entire panel of antibiotics mentioned above. Some (13%) of the strains with these STs were susceptible to just one or two of the antibiotics in this panel. Further subtyping using fla typing and pulsed-field gel electrophoresis with SmaI and KpnI revealed that the major MDR STs corresponded to strains of related but distinct subtypes, providing evidence for genomic diversification within these STs. These findings suggest that MDR strains of C. coli from turkeys have a clonal population structure characterized by the presence of a relatively small number of clonal groups that appear to be disseminated in the turkey production system. In addition, the observed correlation between STs and the MDR profiles of the microbes indicates that MLST-based typing holds potential for source-tracking applications specific to the animal source (turkeys) and the antimicrobial resistance profile (MDR status) of C. coli.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
D'lima CB,Miller WG,Mandrell RE,Wright SL,Siletzky RM,Carver DK,Kathariou Sdoi
10.1128/AEM.02346-06subject
Has Abstractpub_date
2007-04-01 00:00:00pages
2156-64issue
7eissn
0099-2240issn
1098-5336pii
AEM.02346-06journal_volume
73pub_type
杂志文章abstract::The pigmented strain Serratia marcescens ATCC 274 had a higher buffering capacity and a higher membrane H conductance than S. marcescens GP, a spontaneous nonpigmented mutant of ATCC 274. The data suggest that mutations which apparently affect only the synthesis of a secondary metabolite can modify buffering capacity ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.6.2152-2154.1994
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abstract::A soil-inhabiting Fusarium proliferatum strain was capable of transforming or degrading nonlabeled and (sup14)C-labeled industrial, natural, and synthetic lignin. The mineralization rate per day (expressed as the percentage of added radioactivity recovered as to (sup14)CO(inf2)) was maximal during primary metabolism. ...
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pub_type: 杂志文章
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abstract::Carnobacteriocin B2 is a well-characterized class II bacteriocin produced by a 61-kb plasmid from Carnobacterium piscicola LV17. Export of this bacteriocin is dependent on specific ABC (ATP-binding cassette) secretion proteins. Divergicin A is a strongly hydrophobic narrow-spectrum bacteriocin produced by a 3.4-kb pla...
journal_title:Applied and environmental microbiology
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doi:10.1128/AEM.62.11.4095-4099.1996
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journal_title:Applied and environmental microbiology
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doi:10.1128/aem.68.1.397-400.2002
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journal_title:Applied and environmental microbiology
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pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:1998-02-01 00:00:00
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
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pub_type: 杂志文章
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更新日期:2013-01-01 00:00:00