Accelerated Aromatic Compounds Degradation in Aquatic Environment by Use of Interaction between Spirodela polyrrhiza and Bacteria in Its Rhizosphere(ENVIRONMENTAL BIOTECHNOLOGY)
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概要
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Accelerated degradation of organic chemicals by aquatic plant-bacterial associations was reported for the first time with elucidation of the role and contribution of aquatic plant and bacteria in its rhizosphere using a fast-growing giant duckweed, Spirodela polyrrhiza. The results clearly showed the accelerated degradation of all the three aromatic compounds (phenol, aniline and 2, 4-dichlorophenol [2, 4-DCP]) tested by aquatic plant-bacterial associations. In phenol degradation system, phenol-degrading bacteria indigenous to the rhizosphere fraction of S. polyrrhiza mainly contributed, while in aniline degradation system S. polyrrhiza mainly contributed by stimulating aniline-degrading bacteria both in the rhizosphere and balk water fraction. On the other hand in 2, 4-DCP degradation system, S. polyrrhiza itself mainly contributed to its removal by uptake and degradation. Thus, the mechanisms for accelerated removal of aromatic compounds were quite different depending on the substrates. S. polyrrhiza showed selective accumulation of phenol-degrading bacteria in its rhizosphere fraction, while aniline- and 2, 4-DCP-degrading bacteria were not much accumulated. S. polyrrhiza secreted peroxidase and laccase. However, both of the enzymatic activities increased with the addition of aromatic compounds, degrading ability of S. polyrrhiza itself should be owing to the production of peroxidase rather than laccase because the change of peroxidase activity and concentration of each aromatic compound well concurred. From the results obtained in the present study, it can be concluded that the feasibility of the use of aquatic plant-bacterial associations to accelerate the degradation of organic chemicals especially recalcitrant compounds in aquatic environment was shown.
- 社団法人日本生物工学会の論文
- 2006-04-25
著者
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Ike Michihiko
Division of Sustainable Energy and Environmental Engineering, Osaka University
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Toyama Tadashi
Department Of Applied Chemistry Muroran Institute Of Technology
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Sei Kazunari
Division of Sustainable Energy and Environmental Engineering, Osaka University
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YU Ning
Osaka Univ.
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Toyama Tadashi
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka
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Yu Ning
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka
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Kumada Hirohide
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka
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Fujita Masanori
Division of Sustainable Energy and Environmental Engineering, Graduate School of Engineering, Osaka
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Ike M
Division Of Sustainable Energy And Environmental Engineering Osaka University
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Fujita M
Kochi National College Of Technology
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Sei Kazunari
Dept. Mat. Env. Energy. Osaka Univ.
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Fujita Masanori
Kochi National College of Technology
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Fujita Masanori
Environ. Eng. Osaka Univ.
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Kumada Hirohide
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Fujita Masanori
Graduate School Of Engineering Osaka University
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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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Ike Michihiko
Environ. Eng. Osaka Univ.
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Fujita Masanori
Kochi National Coll. Of Technol. 200-1 Monobe Otsu Nankoku Kochi 783-8508 Jpn
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Fujita M
Department Of Environmental Engineering Osaka University
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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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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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Fujita M
Graduate School Of Biosphere Science Hiroshima University
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Fujita Masanori
Division Of Sustainable Energy And Environmental Engineering Graduate School Of Engineering Osaka Un
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Toyama Tadashi
Division Of Nephrology Department Of Disease Control And Homeostasis Institute Of Medical Pharmaceutical And Health Sciences Faculty Of Medicine Kanazawa University
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FUJITA Masanori
Division of Environmental Medicine, National Defense Medical College Research Institute
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