Elucidation of mechanism of cesium accumulation for decontamination of radiocesium by microbe

2015 Fiscal Year Final Research Report

• Project/Area Number: 25340040
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Risk sciences of radiation and chemicals
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: SAKAMOTO Fuminori 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, 研究員 (60391273)
• Co-Investigator(Kenkyū-buntansha): OHNUKI Toshihiko 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門先端基礎研究センター, 研究員 (20354904) ; KOZAI Naofumi 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門先端基礎研究センター, 研究員 (80354877)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 放射性セシウム / 酵母 / 一遺伝子欠損酵母 / 放射性セシウム回収

Outline of Final Research Achievements

Environmental pollution with the radiocesium around Fukushima Daiichi Nuclear Power Plant (FDNPP) is a big problem. The purpose of this study is to provide new knowledge for effective decontamination of radiocesium released from DFNPP in large quantities by using microbes. As a result of study using 5416 kinds of yeast which is one of microbe, we clarified that the genes in conjunction with tonoplast membrane composition are related to tolerance of radiocesium. In addition, as a result of field experiment using yeast and mycelia of mushroom which is also one of microbe, 75 Bq of Cs-137 was accumulated by the yeast and 86 Bq of Cs-137 was accumulated by the mycelia in maximum from the area of 800 square centimeters respectively. We continue the study to establish the more effective decontamination technique of radiocesium.

Free Research Field

環境放射線、微生物、