title: A study of the antimicrobial resistance and transfer of resistance among organisms isolated from lettuce (Lactuca sativa) leaves in three localities in southwest Nigeria.
abstract: The bacterial flora of lettuce from western Nigeria were investigated for their identity, antimicrobial resistance, and ability to transfer such resistance to other organisms. The isolated contaminants were mostly Gram-negative organisms of the Enterobacteriaceae family, which included Enterobacter species and E. coli. The organisms were resistant to a wide range of antimicrobials and they exhibited multiple antimicrobial resistance phenotypes. Common resistance phenotypes observed included those to beta lactam antibiotics, trimethoprim, and streptomycin. A majority of the isolates had minimum inhibitory concentration of trimethoprim over 1,000 mg/L and they were shown to possess the ability to transfer their resistance to a plasmidless E. coli strain. The results of the authors' study underscore the contributory role of lettuce in the dissemination of antimicrobial resistance in the Nigerian community.
authors.forename: Oluwatoyin A
authors.initials: OA
authors.lastname: Igbeneghu
authors.forename: Adebayo
authors.initials: A
authors.lastname: Lamikanra
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology*; D001419:Bacteria / Q000145:classification / Q000187:drug effects* / Q000302:isolation & purification; D015169:Colony Count, Microbial; D004352:Drug Resistance, Microbial; D018545:Lactuca / Q000382:microbiology*; D008826:Microbial Sensitivity Tests; D018515:Plant Leaves / Q000382:microbiology
chemical_list: D000890:Anti-Infective Agents