Tendency and characteristics of accumulation of radioactive substance in fungi and lichens

• Project/Area Number: 24651043
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Risk sciences of radiation/Chemicals
• Research Institution: University of Tsukuba
• Principal Investigator: KAKISHIMA Makoto 筑波大学, 名誉教授 (40015904)
• Co-Investigator(Kenkyū-buntansha): HOSAKA Kentaro 国立科学博物館, 植物研究部, 研究員 (10509417) ; ABE Junichi Peter 筑波大学, 生命環境系, 助教 (40292510) ; OHMURA Yoshihito 国立科学博物館, 植物研究部, 研究員 (40414362)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 福島第一原子力発電所事故 / 放射性セシウム137 / きのこ / 地衣類 / ツツジもち病菌 / 生物モニタリング / 放射性セシウム / 環境モニタリング / 菌類 / 植物寄生菌 / 菌根菌 / もち病菌 / 腐生菌

Outline of Final Research Achievements

After the Fukushima Daiichi nuclear disaster 4 years, a bio-monitoring of radioactivity in mushrooms, lichens and plant parasitic fungi were conducted mainly in Ibaraki, fewer in Fukushima, Tochigi, Miyagi and Chiba Prefecture. The results show that in mushrooms the mycorrhizal species are higher than saprotrophic one, in lichens in mean the radioactivity are 10 fold higher than mushrooms, and in plant parasitic fungi the radioactivity of Exobasidium vaccinii which cause Azalea leaf galls are 2-fold higher than healthy leaves. Finally, at the present the rate of decreasing of 137Cs radioactivity is lower than after 2 years of the disaster, is now stable and still high.

Research Products

• [Journal Article] 137Cs concentrations in foliose lichens within Tsukuba-city as a reflection of radioactive fallout from the Fukushima Dai-ichi Nuclear Power Plant accident. (2015)
  • Author(s): Ohmura, Y., Matsukura, K., Abe, J.P., Hosaka, K., Tamaoki, M., Dohi, T., Kakishima, M., Seaward, M.R.D.
  • Journal Title: Journal of Environmental Radioactivity Volume: 141 Pages: 38-43
  • DOI: 10.1016/j.jenvrad.2014.11.014
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Concentration of radionuclides in lichens following the Fukushima Nuclear accident (2013)
  • Author(s): Ohmura,Y., K. Hosaka, T. Kasuya, J. P. Abe, M. Kakishima
  • Journal Title: The Lichenologist Volume: 45
  • Peer Reviewed
• [Presentation] Biomonitoring of radiocesium in wild mushrooms, lichens, and plant pathogenic fungus collected between Ibaraki and Fukushima Prefecture after the Fukushima nuclear accident. (2014)
  • Author(s): Abe, J. P. , Hosaka, K., Ohmura, Y., Kasuya, T., Kakishima, M.
  • Organizer: The 10th International Mycological Congress
  • Place of Presentation: バンコク（タイ）
  • Year and Date: 2014-08-04 – 2014-08-08
• [Presentation] Radioactive Cs contamination of mushroom on Mt. Fuji, due to Fukushima Daiichi nuclear accident. (2013)
  • Author(s): Nomura, K., Higaki, S., Goto, Y., Shibata, H., Hosaka, K.,Hiroi, M.
  • Organizer: The 9th International Workshop on Ionizing Radiation Monitoring
  • Place of Presentation: 茨城県大洗町
• [Presentation] Can plant pathogenic fungi accumulate high concentration of radiocesium? (2013)
  • Author(s): Abe, J. P., K. Hosaka, Y. Ohmura, M. Kakishima
  • Organizer: Asian Mycological Congress 2013 with 13th International Marine and Freshwater Mycology Symposium
  • Place of Presentation: 北京、中国
• [Presentation] Monitoring of radiocesium in lichens and mushrooms after Fukushima NPP accident in Tsukuba (2013)
  • Author(s): Ohmura, Y., K. Hosaka, J. P. Abe, T. Kasuya and M. Kakishima
  • Organizer: Asian Mycological Congress 2013 with 13th International Marine and Freshwater Mycology Symposium
  • Place of Presentation: 北京、中国
• [Presentation] 福島県内における野生きのこの放射性セシウム濃度の動向 (2013)
  • Author(s): 広井勝・桧垣正吾・保坂健太郎 ・後藤康彦・野村貴美
  • Organizer: 日本菌学会第57回大会
  • Place of Presentation: 東京農業大学、世田谷キャンパス
• [Presentation] 富士山の野生きのこに含まれる放射性セシウム濃度（2012） (2013)
  • Author(s): 後藤康彦・柴田尚・桧垣正吾・保坂健太郎・広井勝・野村貴美
  • Organizer: 日本菌学会第57回大会
  • Place of Presentation: 東京農業大学、世田谷キャンパス
• [Presentation] サツキツツジもち病罹病葉の放射性セシウムの蓄積について (2013)
  • Author(s): 阿部淳一・保坂健太郎・大村嘉人・柿嶌眞
  • Organizer: 日本菌学会第57回大会
  • Place of Presentation: 東京農業大学、世田谷キャンパス
• [Presentation] Environmental biomonitoring of radiocesium accumulation by mycorrhizal and saprobic fungi collected in an area with lower fallout after the accident in Fukushima I NPP. (2013)
  • Author(s): Abe, J.P., K. Hosaka, Y. Ohmura, T. Kasuya, M. Kakishima
  • Organizer: 7th International Conference on Mycorrhiza
  • Place of Presentation: New Delhi, India
• [Presentation] 菌類放射能ネットワーク（仮称）の発足と今後の展望 (2012)
  • Author(s): 保坂健太郎・大村嘉人・柿嶌眞・阿部淳一・糟谷大河・後藤康彦・野村貴美・桧垣正吾・根田仁・広井勝・江口文陽・柴田尚・石井弓美子・野原精一
  • Organizer: 日本菌学会第56回大会
  • Place of Presentation: 岐阜市、岐阜大学応用生物科学部
• [Presentation] つくば市におけるきのこ類および地衣類の放射性セシウム濃度の動向 (2012)
  • Author(s): 阿部淳一・保坂健太郎・大村嘉人・糟谷大河・柿嶌眞
  • Organizer: 日本菌学会第56回大会
  • Place of Presentation: 岐阜市、岐阜大学応用生物科学部
• [Presentation] 富士山の野生きのこに含まれる放射性セシウム濃度 (2012)
  • Author(s): 柴田尚・桧垣正吾・後藤康彦・奈良俊彦・保坂健太郎・野村貴美
  • Organizer: 日本菌学会第56回大会
  • Place of Presentation: 岐阜市、岐阜大学応用生物科学部
• [Presentation] 福島県郡山市、いわき市より採取した野生きのこの放射性セシウム含量 (2012)
  • Author(s): 広井勝・桧垣正吾・後藤康彦・奈良俊彦・保坂健太郎・野村貴美
  • Organizer: 日本菌学会第56回大会
  • Place of Presentation: 岐阜市、岐阜大学応用生物科学部
• [Presentation] 菌類研究者ネットワークの活用ときのこ・地衣類を用いた除染の可能性 (2012)
  • Author(s): 保坂健太郎・大村嘉人・柿嶌眞・阿部淳一・糟谷大河・後藤康彦・野村貴美・桧垣正吾・根田仁・広井勝・江口文陽・柴田尚・石井弓美子・野原精一
  • Organizer: 第1回環境放射能除染研究発表会
  • Place of Presentation: 福島市、パルセいいざか
• [Presentation] つくば市における地衣類から検出される放射性セシウムの変遷 (2012)
  • Author(s): 大村嘉人・保坂健太郎・阿部淳一ピーター・糟谷大河・柿嶌眞
  • Organizer: 第1回環境放射能除染研究発表会
  • Place of Presentation: 福島市、パルセいいざか
• [Presentation] つくば市におけるきのこ類から検出できる放射性セシウムの変遷 (2012)
  • Author(s): 阿部淳一ピーター・保坂健太郎・大村嘉人・柿嶌眞
  • Organizer: 第1回環境放射能除染研究発表会
  • Place of Presentation: 福島市、パルセいいざか