Formation and degradation of solid-phase humic substances as electron mediator for pollutant-degrading microorganisms in geosphere
| Project/Area Number |
26281040
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Modeling and technologies for environmental conservation and remediation
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| Research Institution | Nagoya University |
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Principal Investigator |
Katayama Arata 名古屋大学, 未来材料・システム研究所, 教授 (60185808)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2016: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
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| Keywords | 腐植物質 / 細胞外電子伝達 / 脱塩素菌 / 固体腐植ヒューミン / 金属－腐植酸複合体 / ペンタクロロフェノール / 嫌気性脱塩素反応 / 細胞外電子伝達系 / 脱ハロゲン呼吸 / 固体腐植 / 硝酸還元呼吸 / 腐植生成消失 / 細胞外電子伝達物質 / 固体腐植物質 / メラノイジン反応 / 金属ー腐植酸複合体 / ペンタクロロフェノール脱塩素活性 / 嫌気性微生物 / 還元的脱塩素反応 / 硝酸還元 / 電気培養 / 機能解析 / 反応中心解析 / 腐植化 |
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| Outline of Final Research Achievements |
Because of the persistent characteristics of humic substances in the environment, they are not considered as active material in biological metabolic systems. However, humic substances are now understood as external electron mediators for microbes. This study aims to investigate the formation and degradation of humic substances as external electron mediators in natural environment. To examine the function of external electron mediator, we have used the humin-dependent anaerobic pentachlorophenol-dechlorinating culture. The results showed that the freeze-dried powder of some bacteria and fungi functioned as external electron mediators, and that some products of humic acids and metals showed the external electron mediators. These suggested the formation and degradation of external electron mediators in natural environment.
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Report
(4 results)
Research Products
(25 results)
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[Journal Article] Spatial Abundance and Distribution of Potential Microbes and Functional Genes Associated with Anaerobic Mineralization of Pentachlorophenol in a Cylindrical Reactor2016
Author(s)
Zhiling Li, Jun Nan, Cong Huang, Bin Liang, Wenzong Liu, Haoyi Cheng, Chunfang Zhang, Dongdong Zhang, Deyong Kong, Kyoko Kanamaru, Tetsuo Kobayashi, Aijie Wang, and Arata Katayama
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Journal Title
Scientific Report
Volume: 6
Issue: 1
Pages: 19015-19015
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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