| Project/Area Number |
16K14816
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Ecology/Environment
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
Hori Tomoyuki 国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (20509533)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 遺伝子 / 生態学 / 微生物学 / 環境分析 / 環境技術 / 微生物 |
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| Outline of Final Research Achievements |
In this study, high-sensitivity stable isotope probing was implemented to identify the hitherto unknown microorganisms, including rare biosphere, involved in the degradation of 1,4-dioxane (recalcitrant compound biodegradation) and the degradation of dead bacterial biomass (microbial food web) as the different metabolic functions of microbial communities in natural environments. The former research revealed that the co-existence and individually distinct dynamics of various 1,4-dioxane-degrading microorganisms played pivotal roles in the maintenance of the biological system removing the recalcitrant pollutant. The latter research demonstrated that a variety of bacteria were potentially competitive with pathogens due to their preferential assimilation of dead biomass in compost.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究を通して、高感度SIPが自然環境中に存在する未知のレアバイオスフィアの機能解明に極めて有効であることが明らかになった。高感度SIPは、今回対象とした研究対象のみならず、あらゆる自然環境試料に適用し得ると考えられる。よって本研究で得られた成果は、普遍的かつ強力な微生物生態系機能の評価・予測ツールを提供し、さらに生態系機能発現に関わる共通原理の理解に大きく貢献するものとして捉えられる。
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