Transfer of plasmid pJP4 from Escherichia coli and Pseudomonas putida to bacteria in activated sludge developed under different sludge retention times(ENVIRONMENTAL BIOTECHNOLOGY)
スポンサーリンク
概要
- 論文の詳細を見る
To add the knowledge on the plasmid-mediated bioaugmentation in the activated sludge process, conjugative transfer of a self-transmissible, broad host range, mercury resistance, and partial 2,4-dichlorophenoxyactic acid (2,4-D)-degrading plasmid pJP4 from Escherichia coli HB101 or Pseudomonas putida KT2440 to activated sludge bacteria were examined by filter mating. Activated sludge samples were collected from an actual wastewater treatment plant and laboratory reactors operated under different sludge retention times (SRTs) of 5, 10, and 15 days. Transfer of pJP4 was observed in all combinations of donor and activated sludge (recipient) with the transfer frequency from 6.5×10^<-8> to 2.5×10^<-4> transconjugants per recipient, except from E. coli HB101 to the activated sludge sample of SRT 5 days. Although plasmid pJP4 was transferred mainly to dominant bacteria belonging to Pseudomonas, the host range of pJP4 in the activated sludge varied depending on the donor strain. Phenotypically various transconjugants were isolated from activated sludge sampled from the reactors with longer SRT operations. All transconjugants exhibited high mercury resistance equivalent to the donor strains; some were capable of degrading 2,4-D. These results suggest that the behavior of plasmids can be controlled partially through selection of appropriate donor strains and operational conditions of the activated sludge process.
著者
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Ike Michihiko
Division of Sustainable Energy and Environmental Engineering, Osaka University
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SODA Satoshi
Division of Endocrinology and Metabolism, Niigata University Graduate School of Medical and Dental S
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Inoue Daisuke
Division of Sustainable Energy and Environmental Engineering, Osaka University
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Sei Kazunari
Division of Sustainable Energy and Environmental Engineering, Osaka University
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Ike M
Division Of Sustainable Energy And Environmental Engineering Osaka University
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Inoue Daisuke
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Sei Kazunari
Dept. Mat. Env. Energy. Osaka Univ.
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Tsutsui Hirofumi
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka
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Anami Yasutaka
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka
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Matsuda Masami
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka
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Ike Michihiko
Division Of Sustainable Energy And Environmental Engineering Osaka University
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Ike Michihiko
大阪大学 環境・エネルギー工学専攻
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Ike Michihiko
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Inoue Daisuke
Division Of Endocrinology And Metabolism Department Of Internal Medicine Hyogo Prefectural Amagasaki
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Soda S
National Institute For Environmental Studies
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Soda Satoshi
Division Of Endocrinology And Metabolism Niigata University Graduate School Of Medical And Dental Sc
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Matsuda Masami
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Anami Yasutaka
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Ike Michihiko
Environ. Eng. Osaka Univ.
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Ike M
Osaka University
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Ike Michihiko
Department Of Environmental Engineering Faculty Of Engineering Osaka University
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Sei K
Dept. Mat. Env. Energy. Osaka Univ.
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Tsutsui Hirofumi
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Sei Kazunari
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Ike M
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Inoue Daisuke
Division Of Artificial Environment Systems Yokohama National University
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Inoue Daisuke
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University
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SODA SATOSHI
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University
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Tsutsui Hirofumi
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka University
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