title: Radioactive and stable metal bioaccumulation, crystalline compound and siderophore detection in Clavariadelphus truncatus.
abstract: 137Cs and 40K activity concentrations and stable elements have been measured in Clavariadelphus truncatus collected in Mexico. Iron-chelating compounds of siderophore-type was also studied in the species. 137Cs and 40K were determined in soil and mushroom samples with HpGe gamma-ray spectrometry. Macro- and micro-elemental concentrations were determined by XRF and ICP-MS. Siderophore detection was obtained with a colorimetric assay and X-ray diffraction analysis was performed using a Siemens D5000 diffractometer. 137Cs geometric mean concentration in C. truncatus was 26 times higher as compared with other Mexican edible mushroom species, while 40K showed stability. Soil-C. truncatus concentration ratio for 137Cs and other micro-elements such as Cs, Rb and Pb were also higher than other Mexican edible species. The 137Cs committed effective dose due to the ingestion of C. truncatus was 8 x 10(-6) Sv year(-1). The main crystalline structure found in C. truncatus was D-Mannitol.
authors.affiliation: ININ, Ap. Post. 18-1027, C.P. 11801, México D.F., Mexico. migp@nuclear.inin.mx
authors.forename: M I
authors.initials: MI
authors.lastname: Gaso
authors.forename: N
authors.initials: N
authors.lastname: Segovia
authors.forename: O
authors.initials: O
authors.lastname: Morton
authors.forename: J L
authors.initials: JL
authors.lastname: Lopez
authors.forename: A
authors.initials: A
authors.lastname: Machuca
authors.forename: E
authors.initials: E
authors.lastname: Hernandez
mesh_terms: D001487:Basidiomycota / Q000737:chemistry* / Q000378:metabolism; D002588:Cesium Radioisotopes / Q000032:analysis* / Q000378:metabolism; D003124:Colorimetry; D008353:Mannitol / Q000032:analysis / Q000737:chemistry; D013058:Mass Spectrometry; D008670:Metals / Q000032:analysis* / Q000378:metabolism; D008800:Mexico; D011197:Potassium Radioisotopes / Q000032:analysis* / Q000378:metabolism; D017262:Siderophores / Q000032:analysis* / Q000378:metabolism; D012990:Soil Pollutants, Radioactive / Q000032:analysis* / Q000378:metabolism; D014875:Water Pollutants, Radioactive / Q000032:analysis* / Q000378:metabolism; D014961:X-Ray Diffraction
chemical_list: D002588:Cesium Radioisotopes; D008670:Metals; D011197:Potassium Radioisotopes; D017262:Siderophores; D012990:Soil Pollutants, Radioactive; D014875:Water Pollutants, Radioactive; D008353:Mannitol