STP971

    Effects of Metals from Mine Tailings on the Microflora of a Marsh Treatment System

    Published: Jan 1988


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    Abstract

    Bacteria isolated from a freshwater marsh treatment system on the site of a mine tailings basin were assessed for heavy metal and antibiotic resistance. All isolates were found to be multiply antibiotic and heavy metal resistant. Klebsiella and Pseudomonas spp. demonstrated the highest levels of resistance to the antibiotics and metals tested. The fecal coliform group displayed similar resistance patterns, suggesting the presence of a common plasmid. Examination of the K. oxytoca marsh system isolate for the presence of plasmid deoxyribonucleic acid (DNA) revealed six plasmids, ranging in size from 3 × 106 to 50 × 106 daltons (Da). The results of this study suggest that the presence of mine tailings in an aquatic environment may promote the development of antibiotic and heavy metal resistance among the microbial flora.

    Keywords:

    bacteria, marsh treatment system, mine tailings, antibiotic and heavy metal resistance, plasmids


    Author Information:

    Desjardins, RM
    Graduate research assistant, assistant professor, and professor, University of Toronto, Toronto,

    Bradbury, NC
    Graduate research assistant, assistant professor, and professor, University of Toronto, Toronto,

    Seyfried, PL
    Graduate research assistant, assistant professor, and professor, University of Toronto, Toronto,


    Paper ID: STP34063S

    Committee/Subcommittee: E47.01

    DOI: 10.1520/STP34063S


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