Study on the mechanism of Metallogenium-particle formation at bottom layer of Lake Biwa and qualitative evaluation of the bottom environment
| Project/Area Number |
26281042
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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 | Akita Prefectural University |
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Principal Investigator |
MIYATA Naoyuki 秋田県立大学, 生物資源科学部, 教授 (20285191)
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| Co-Investigator(Kenkyū-buntansha) |
古田 世子 滋賀県琵琶湖環境科学研究センター, その他部局等, 専門員 (00508476)
岡野 邦宏 秋田県立大学, 生物資源科学部, 助教 (30455927)
桐山 徳也 滋賀県琵琶湖環境科学研究センター, その他部局等, 専門員 (40723862)
高田 潤 岡山大学, 自然科学研究科, 特任教授 (60093259)
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| Co-Investigator(Renkei-kenkyūsha) |
ICHISE Satoshi 滋賀県琵琶湖環境科学研究センター, 環境監視部門, 専門員 (10508443)
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| Research Collaborator |
IKEGAYA Hisato 兵庫県立大学, 生命理学研究科, 研究員 (30531579)
FUJIBAYASHI Megumu 秋田県立大学, 生物資源科学部, 助教 (70552397)
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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 |
¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
Fiscal Year 2016: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2015: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Keywords | マンガン酸化細菌 / メタロゲニウム粒子 / 貧酸素化 / 底層部物質循環 / 湖沼底層部 / 水圏現象 / 微生物 / 琵琶湖底層部 |
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| Outline of Final Research Achievements |
In the northern basin of Lake Biwa, the occurrence of filamentous Mn particles (Metallogenium-particles) at the bottom layer has been recorded since 2002. The aim of this study was to analyze the mechanism of Metallogenium particle formation in Mn(II)-oxidizing bacteria and to specify the conditions of bottom environment that bring about the particles formation. The results suggest that Mn(II)-oxidizing bacteria produce the Metallogenium particles under oxygen-limited, weekly acidic, and gelatinous polysaccharide-rich conditions. In the northern basin, polysaccharide-encapsulated phytoplankton cells grown in the upper layer go down and serve as resource of polysaccharides in the bottom layer.
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Report
(4 results)
Research Products
(13 results)
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[Journal Article] Formation of filamentous Mn oxide particles by the alphaproteobacterium Bosea sp. strain BIWAKO-012015
Author(s)
Furuta, S., Ikegaya, H., Hashimoto, H., Ichise, S., Kohno, T., Miyata, N., and Takada, J.
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Journal Title
Geomicrobiology Journal
Volume: 印刷中
Issue: 8
Pages: 666-676
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] Formation of filamentous Mn(III, IV) oxide particles in cultures of an alphaproteobacterium isolate2014
Author(s)
Miyata, N., Furuta, S., Ikegaya, H., Hashimoto, H., Ichise, S., Kohno, T., and Takada, J.
Organizer
15th International Society for Microbial Ecology
Place of Presentation
Seoul, Korea
Year and Date
2014-08-26
Related Report
