2011 Fiscal Year Final Research Report
DEVELOPMENT OF NOVEL WATER QUALITY CONSERVATION SYSTEM BY USING SYMBIOSIS BETWEEN AQUATIC PLANTS AND RHIZOBACTERIA
| Project/Area Number |
21681010
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| Research Category |
Grant-in-Aid for Young Scientists (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Environmental technology/Environmental materials
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| Research Institution | Kitasato University (2011)
Osaka University (2009-2010) |
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Principal Investigator |
SEI Kazunari 北里大学, 医療衛生学部, 教授 (80324177)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 植生浄化法 / 水生植物 / 根圏微生物 / 微量汚染化学物質 |
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| Research Abstract |
The basic investigations on symbiosis between aquatic plants and rhizobacteria were performedto evaluate the possibility of the low-carbon and environmentally-friendly water quality conservation system againstaromatic compounds contamination. The root exudate of Spirodela polyrrhiza, a duckweed, was revealed to be composed of several phenolic components, and the trace components of the root exudate were varied depending on the chemicals to which S. polyrrhiza was exposed. The accelerated degradation of various aromatic compounds were confirmed in the rhizosphere of Phragmites australis, a reed, as well as S. polyrrhiza. In addition, 4-tert-butylphenol(4-t-BP) degrading bacteria were isolated from their rhizosphere for the first time, and their 4-t-BP degradation pathway and mechanism of accelerated 4-t-BP degradation could be clarified.
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[Journal Article] Enrichment of bacteria possessing catechol dioxygenase genes in the rhizosphere of Spirodela polyrrhiza : a mechanism of accelerated biodegradation of phenol2009
Author(s)
Toyama T., Sei K., Yu N., Kumada H., Inoue D., Hoang H., Soda S., Chang Y.-C., Kikuchi S., Fujita M., Ike M.
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Journal Title
Water Research
Volume: 43(15)
Pages: 3765-3776
Peer Reviewed
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