2005 Fiscal Year Final Research Report Summary
Bacterial capturing and biodegradation of fine particles in the ocean
| Project/Area Number |
15310007
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KOGURE Kazuhiro The University of Tokyo, Ocean Research Institute, Professor, 海洋研究所, 教授 (10161895)
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| Co-Investigator(Kenkyū-buntansha) |
MORISAKI Hisao Ritsumeikan University, College of Science and Engineering, Professor, 理工学部, 教授 (50125671)
CHIURA Hiroshi Xavier International Christian University, Division of Natural Sciences, Associate Professor, 教養学部, 準教授 (00103698)
WADA Minoru The University of Tokyo, Ocean Research Institute, Research Associate, 海洋研究所, 助手 (70292860)
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| Project Period (FY) |
2003 – 2005
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| Keywords | Marine bacteria / fine particles / paramagnetic beads / attachment / virus / polymer layer / repulsion energy |
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| Research Abstract |
In surface layer of the ocean, there are approximately ten to one hundred million of fine particles of which radius is less than 0.5 micron in one ml of seawater. How those particles are metabolized? How do bacteria interact with those particles? What is the difference between the bacterial interaction with fine particles and large surfaces? This project was conducted to answer these questions. After three years research, the followings have been clarified. First, the concept of "bacterial particle capturing" was proposed after a series of newly developed method using paramagnetic beads. Second, the release of fine particles from marine bacterium, Vibrio fisheri was examined under various physicochemical conditions. It was clarified that the bacterium produce virus like particles containing nucleic acid and may serve as mediator of gene transfer. Third, the importance of surface polymer layers for bacterial interaction with large particles or attachment were investigated and the involvement of repulsion energy was clarified.
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[Book] 海洋生物の連鎖2006
Author(s)
木暮一啓
Total Pages
346
Publisher
東海大学出版会
Description
「研究成果報告書概要(和文)」より
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