title: Translocation of133Cs administered to Cryptomeria japonica wood.
abstract: To reveal the in planta behaviour of caesium (Cs), the stable isotope133Cs was administered into 3-year-old Cryptomeria japonica seedlings by the application of133CsCl aqueous solution to the bark surface. The administered133Cs was quantified by ICP-MS measurements, which showed transportation of133Cs in an ascending direction in the stem. Distribution of133Cs was visualized using freeze-fixed C. japonica woody stem samples and cryo-time-of-flight secondary ion mass spectrometry/scanning electron microscopy (cryo-TOF-SIMS/SEM) analysis. Cryo-TOF-SIMS/SEM visualization suggested that133Cs was rapidly transported radially by ray parenchyma cells followed by axial transportation by pith and axial parenchyma cells. Adsorption experiments using powdered C. japonica wood samples and X-ray absorption fine structure (XAFS) analysis suggested that133Cs was in the hydrated state following its deposition into tracheid cell walls.
authors.affiliation: Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan. Electronic address: daoki@agr.nagoya-u.ac.jp.
authors.forename: Dan
authors.initials: D
authors.lastname: Aoki
authors.affiliation: Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan.
authors.forename: Ryutaro
authors.initials: R
authors.lastname: Asai
authors.affiliation: Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan.
authors.forename: Rie
authors.initials: R
authors.lastname: Tomioka
authors.affiliation: Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Matsushita
authors.affiliation: Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan; Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Asakura
authors.affiliation: Synchrotron Radiation Research Center, Nagoya University, Furo-Cho, Chikusa-Ku, Nagoya 464-8603, Japan.
authors.forename: Masao
authors.initials: M
authors.lastname: Tabuchi
authors.affiliation: Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan.
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Fukushima
mesh_terms: D002587:Cesium Isotopes / Q000378:metabolism*; D032485:Cryptomeria / Q000378:metabolism*; D018547:Plant Stems / Q000378:metabolism*; D036226:Seedlings; D018629:Spectrometry, Mass, Secondary Ion; D014934:Wood / Q000378:metabolism*
chemical_list: D002587:Cesium Isotopes
keywords: (133)Cs; Cryptomeria japonica; ICP-MS; XAFS; cryo-TOF-SIMS