Cs uptake by lentinula edodes (shiitake) mushrooms

Guido-Garcia, F.; Sakamoto, Fuminori  ; Kozai, Naofumi   ; Grambow, B.; Devid, K.*

The uptake of Cs by fungi has been thought to be similar to the uptake of K due to their chemical similarities. In this research we aimed to evaluate the impact of different concentrations of K in Cs uptake during mushrooms growth, as well as determine the spatial distribution of both within fruit bodies. Lentinula edodes (shiitake) was used as a model organism due to their capacity to produce fruit body. Preliminary results have shown that the concentrations of Cs in the obtained mushroom samples from mushroom bed did not show any clear relationship to the different concentrations of added K. Higher concentrations of Cs were observed in pileus than in stem, consistently. The results of Cs and K mapping did not show a significant spatial variation. This result suggest that Cs and K are distributed evenly, and that there is no specific or selective binding site for cesium.