Florfenicol resistance in Salmonella enterica serovar Newport mediated by a plasmid related to R55 from Klebsiella pneumoniae
Author(s) -
Dominique Meunier,
Sylvie Baucheron,
E. Chaslus-Dancla,
J.L. Martel,
Axel Cloeckaert
Publication year - 2003
Publication title -
journal of antimicrobial chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.124
H-Index - 194
eISSN - 1460-2091
pISSN - 0305-7453
DOI - 10.1093/jac/dkg141
Subject(s) - microbiology and biotechnology , klebsiella pneumoniae , salmonella enterica , serotype , plasmid , salmonella , biology , enterobacteriaceae , klebsiella , klebsiella oxytoca , virology , bacteria , escherichia coli , gene , biochemistry , genetics
Florfenicol resistance has emerged over the past few years in multidrug-resistant Salmonella enterica serovars Typhimurium, Agona and Paratyphi B. The floR gene encoding florfenicol resistance is chromosomally located in these serovars within a genomic island of 43 kb called SGI1 (Salmonella genomic island 1). In the present study, we characterized florfenicol resistance in a strain of S. enterica serovar Newport isolated from a turkey in 1990 and that lacked SGI1. Florfenicol resistance was mediated by a conjugative plasmid related to R55 from Klebsiella pneumoniae, which was characterized initially in the 1970s and harbours a gene 95% identical to floR.
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