Evaluation of Transferability of R-Plasmid in Bacteriocin-Producing Donors to Bacteriocin-Resistant Recipients
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概要
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Bacteriocin-producing Escherichia coli (donors) rapidly kill conventional recipient E. coli DH5α in conjugation experiments. To evaluate plasmid transferability of bacteriocin-producing donors, we established 2 different bacteriocin-resistant mutants derived from E. coli DH5α and used them as recipients. When the bacteriocin-resistant mutants were used in conjugation experiments, the transconjugant recovery from 20 bacteriocin-producing donors increased from 5% (1/20) to 65% (13/20), and the transfer frequencies increased. These results showed that bacteriocins inhibited the transfer of the R-plasmid from bacteriocin-producing donors. Thus, application of bacteriocin-resistant recipients might aid the evaluation of the potential transferability of plasmids from bacteriocin-producing donors.
著者
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ASAI Tetsuo
National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries
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Ozawa Manao
National Veterinary Assay Laboratory Ministry Of Agriculture Forestry And Fisheries
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Usui Masaru
National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries
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Hiki Mototaka
National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries
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Murakami Koichi
Division of Pathology and Bacteriology, Fukuoka Institute of Health and Environmental Sciences
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Nagai Hidetaka
National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries
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Asai Tetsuo
National Veterinary Assay Lab. Ministry Of Agriculture Forestry And Fisheries Tokyo
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Ozawa Manao
National Veterinary Assay Lab. Ministry Of Agriculture Forestry And Fisheries Tokyo
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Nagai Hidetaka
National Veterinary Assay Laboratory Ministry Of Agriculture Forestry And Fisheries
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HIKI Mototaka
National Veterinary Assay Laboratory, Ministry of Agriculture, Forestry and Fisheries, 1–15–1 Tokura, Kokubunji, Tokyo 185–8511, Japan
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