Fungal spore involvement in the resuspension of radiocaesium in summer

Yasuhito Igarashi, Kazuyuki Kita, Teruya Maki, Takeshi Kinase, Naho Hayashi, Kentaro Hosaka, Kouji Adachi, Mizuo Kajino, Masahide Ishizuka, Tsuyoshi Thomas Sekiyama, Yuji Zaizen, Chisato Takenaka, Kazuhiko Ninomiya, Hiroshi Okochi, Atsuyuki Sorimachi

    Research output: Contribution to journalArticle

    Abstract

    We observed the atmospheric resuspension of radiocaesium, derived from the Fukushima Dai-ichi Nuclear Power Plant accident, at Namie, a heavily contaminated area of Fukushima, since 2012. During the survey periods from 2012 to 2015, the activity concentrations of radiocaesium in air ranged from approximately 10 −5 to 10 −2 Bq per m 3 and were higher in the warm season than in the cold season. Electron microscopy showed that the particles collected on filters in summer were predominantly of biological origin (bioaerosols), with which the observed radiocaesium activity concentration varied. We conducted an additional aerosol analysis based on fluorescent optical microscopic observation and high-throughput DNA sequencing technique to identify bioaerosols at Namie in 2015 summer. The concentrations of bioaerosols fluctuated the order of 10 6 particles per m 3 , and the phyla Basidiomycota and Ascomycota (true Fungi) accounted for approximately two-thirds of the bioaerosols. Moreover, the fungal spore concentration in air was positively correlated with the radiocaesium concentration at Namie in summer 2016. The bioaerosol emissions from Japanese mixed forests in the temperate zone predominately included fungal cells, which are known to accumulate radiocaesium, and should be considered an important scientific issue that must be addressed.

    Original languageEnglish
    Article number1954
    JournalScientific Reports
    Volume9
    Issue number1
    DOIs
    Publication statusPublished - 2019 Dec 1

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    Fungal Spores
    Air
    Nuclear Power Plants
    High-Throughput Nucleotide Sequencing
    Basidiomycota
    Ascomycota
    Aerosols
    Accidents
    Electron Microscopy
    Fungi
    Surveys and Questionnaires
    Forests

    ASJC Scopus subject areas

    • General

    Cite this

    Igarashi, Y., Kita, K., Maki, T., Kinase, T., Hayashi, N., Hosaka, K., ... Sorimachi, A. (2019). Fungal spore involvement in the resuspension of radiocaesium in summer. Scientific Reports, 9(1), [1954]. https://doi.org/10.1038/s41598-018-37698-x

    Fungal spore involvement in the resuspension of radiocaesium in summer. / Igarashi, Yasuhito; Kita, Kazuyuki; Maki, Teruya; Kinase, Takeshi; Hayashi, Naho; Hosaka, Kentaro; Adachi, Kouji; Kajino, Mizuo; Ishizuka, Masahide; Sekiyama, Tsuyoshi Thomas; Zaizen, Yuji; Takenaka, Chisato; Ninomiya, Kazuhiko; Okochi, Hiroshi; Sorimachi, Atsuyuki.

    In: Scientific Reports, Vol. 9, No. 1, 1954, 01.12.2019.

    Research output: Contribution to journalArticle

    Igarashi, Y, Kita, K, Maki, T, Kinase, T, Hayashi, N, Hosaka, K, Adachi, K, Kajino, M, Ishizuka, M, Sekiyama, TT, Zaizen, Y, Takenaka, C, Ninomiya, K, Okochi, H & Sorimachi, A 2019, 'Fungal spore involvement in the resuspension of radiocaesium in summer', Scientific Reports, vol. 9, no. 1, 1954. https://doi.org/10.1038/s41598-018-37698-x
    Igarashi Y, Kita K, Maki T, Kinase T, Hayashi N, Hosaka K et al. Fungal spore involvement in the resuspension of radiocaesium in summer. Scientific Reports. 2019 Dec 1;9(1). 1954. https://doi.org/10.1038/s41598-018-37698-x
    Igarashi, Yasuhito ; Kita, Kazuyuki ; Maki, Teruya ; Kinase, Takeshi ; Hayashi, Naho ; Hosaka, Kentaro ; Adachi, Kouji ; Kajino, Mizuo ; Ishizuka, Masahide ; Sekiyama, Tsuyoshi Thomas ; Zaizen, Yuji ; Takenaka, Chisato ; Ninomiya, Kazuhiko ; Okochi, Hiroshi ; Sorimachi, Atsuyuki. / Fungal spore involvement in the resuspension of radiocaesium in summer. In: Scientific Reports. 2019 ; Vol. 9, No. 1.
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