Study on relations of Cs accumulation and species of mushroom, and proteins expressed under Cs existence

Sakamoto, Fuminori  ; Guido-Garcia, F.; Kozai, Naofumi   ; Tanaka, Kazuya  ; Grambow, B.

The radiocesium becomes the stress for creatures, but it is known that some plants and fungi collect radiocesium. We continue a study using a mushroom for the purpose of decontamination of the radiocesium by microbes. We tried to confirm species specificity, expressed proteins and so on to elucidate the mechanism of accumulation of radiocesium by mushroom. As a result, we identified 10 species that accumulate Cs as a high rate and another 10 species that accumulate Cs as a low rate. We checked the specificity of species, but any tendencies, regularity and specificity were not discovered. We only confirmed the tendency that high accumulated species need a long culture period and low accumulated species need not a long culture period. As a result of two-dimensional electrophoretic analysis, we specified 4 kinds of proteins which express under Cs existence and 5 kinds of proteins which disappeared under Cs absence.