Mechanism of cesium accumulation in Paramecium bursaria
| Project/Area Number |
17K00613
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | 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 | Kobe University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
吉村 知里 神戸大学, 環境保全推進センター, 助教 (60362761)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 放射性セシウム / 除染 / 原生生物 / 油滴 / 細胞内共生 / クロレラ / ミドリゾウリムシ |
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| Outline of Final Research Achievements |
The protozoan Paramecium bursaria that contains intracellular symbiotic Chlorella was found to possess the ability to dissociated soil-bound cesium from contaminated soil and accumulate at high concentrations in intracellular oil droplet granules. This method was considered to be effective in treating contaminated soil with radioactive cesium in Fukushima Prefecture. In this study, we conducted the following. 1) A method was developed to selectively collect only P. bursaria after mixing the soil suspension with paramecia. 2) Oil droplets were isolated from P. bursaria and the protein composition contained therein was analyzed by mass spectrometry. As a result, proteins that may be involved in cesium transport were identified.
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| Academic Significance and Societal Importance of the Research Achievements |
セシウムの除去法に関する技術は既に多数報告されているが、それらのほとんどは可溶性のセシウムを対象にしたものである。従って、汚染土壌の現場処理法としてミドリゾウリムシを用いた本法は有用性が高く、独創的である。他の生物と比較してミドリゾウリムシがバイオレメディエーションのための生物として優れている理由は、この生物が、細胞口から細胞内に運び込んだ土壌粒子を細胞内でpH 3程度にまで強く酸性化する能力を有している点にある。ミドリゾウリムシは、セシウム以外にも各種重金属を取り込むという報告もあるので、この技術は、セシウムに限らず様々な有害金属（あるいは有用な金属）の除去法もに発展する可能性がある。
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Report
(4 results)
Research Products
(37 results)
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[Journal Article] Taming chlorophylls allowed eukaryotes to prosper on the oxygenated Earth.2019
Author(s)
Kashiyama Y, Yokoyama A, Shiratori T, Bachy C, Gutierrez-Rodriguez A, Not F, Hess S, Wang M, Chen M, Gong Y, Seto K, Kagami M, Hamamoto Y, Honda D, Umetani T, Shihongi A, Kayama M, Matsuda T, Taira J, Yabuki A, Tsuchiya M, Hirakawa Y, Kawaguchi A, Nomura M, Nakamura A, Namba N, Matsumoto M, Tanaka T, Yoshino T et al.
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Journal Title
The ISME journal
Volume: -
Issue: 8
Pages: 1-12
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Putative Neural Network Within an Olfactory Sensory Unit for Nestmate and Non-nestmate Discrimination in the Japanese Carpenter Ant: The Ultra-structures and Mathematical Simulation2018
Author(s)
Yusuke Takeichi, Tatsuya Uebi, Naoyuki Miyazaki, Kazuyoshi Murata, Kouji Yasuyama, Kanako Inoue, Toshinobu Suzaki, Hideo Kubo, Naoko Kajimura, Jo Takano, Toshiaki Omori, Ryoichi Yoshimura, Yasuhisa Endo, Masaru K. Hojo, Eichi Takaya, Satoshi Kurihara, Kenta Tatsuta, Koichi Ozaki, Mamiko Ozaki
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Journal Title
Frontiers in Cellular Neuroscience
Volume: 12
Pages: 1-1
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Development of a compact, highly-sensitive and low-cost biological monitoring method using protozoa for detecting toxicants in aquatic environment2017
Author(s)
Yoshimura, C., Kobayashi, M., Khan, S.M.M.K., Islam, M.D.S., Matsubara, S., Chen, L., Higuchi, R. and Suzaki, T.
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Journal Title
Int. J. Environ. Agr. Res.
Volume: 3
Issue: 8
Pages: 41-44
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Inositol hexakis phosphate is the seasonal phosphorus reservoir in the deciduous woody plant Populus alba L.2017
Author(s)
Kurita, Y., Baba, K., Ohnishi, M., Matsubara, R., Kosuge, K., Anegawa, A., Shichijo, C., Ishizaki, K., Kaneko, Y., Hayashi, M., Suzaki, T., Fukaki, H., Mimura, T.
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Journal Title
Plant Cell Physiol.
Volume: 58
Issue: 9
Pages: 1477-1485
DOI
Related Report
Peer Reviewed / Open Access
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