抄録
The terrestrial cyanobacterium Nostoc commune accumulated high
concentration of radioactive cesium. In this study, we investigated the
effect of soil properties on radioactive cesium uptake by N. commune.
A cultivation experiment confirmed that N. commune
absorbed radioactive cesium from polluted sand, loam, and humus soil
respectively. Especially in sand, the concentration factor of radioactive
cesium to N. commune was high. Addition of potassium
compounds to soil strongly inhibited radioactive cesium accumulation by N.
commune. Of the three potassium compounds, KNO3, KH2PO4
and K2SO4, investigated, K2SO4
had the most prominent inhibitory effect.