title: Characterization of cadmium accumulation in willow as a woody metal accumulator using synchrotron radiation-based X-ray microanalyses.
abstract: Trees that accumulate metals are important plants for restoring contaminated soil because of their high biomass. We examined the cadmium (Cd) tolerance and growth rate of six willow (Salix) species common in Japan. To characterize in detail the localization of Cd and its ligands, synchrotron radiation-based micro X-ray fluorescence analysis was used. This revealed the accumulation of cadmium at the tips of the serrations in leaves, and the phellogen and/or the phelloderm under the stem surface. micro-X-ray absorption near edge structure spectra of Cd in all the accumulation sites were similar to that of the Cd ion coordinated by O ligands in S. gilgiana.
authors.affiliation: Research Institute for Sustainable Humanosphere (RISH), Kyoto University, Uji, Kyoto, 611-0011 Japan.
authors.forename: Emiko
authors.initials: E
authors.lastname: Harada
authors.forename: Akiko
authors.initials: A
authors.lastname: Hokura
authors.forename: Saori
authors.initials: S
authors.lastname: Takada
authors.forename: Kei'ichi
authors.initials: K
authors.lastname: Baba
authors.forename: Yasuko
authors.initials: Y
authors.lastname: Terada
authors.forename: Izumi
authors.initials: I
authors.lastname: Nakai
authors.forename: Kazufumi
authors.initials: K
authors.lastname: Yazaki
mesh_terms: D002104:Cadmium / Q000378:metabolism*; D004577:Electron Probe Microanalysis; D005453:Fluorescence; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D032108:Salix / Q000378:metabolism*; D017356:Synchrotrons
chemical_list: D002104:Cadmium