STUDIES ON UPTAKE OF CESIUM BY MYCELIUM OF THE MUSHROOM (PLEUROTUS-OSTREATUS) BY CS-133-NMR

Sufficient information on the mechanisms of radiocesium translation fr om substrate to mushroom and long-term radiocesium accumulation is sti ll not available, though high concentrations of radiocesium were repor ted in the fruiting bodies of various species of mushrooms especially after the Chemobyl accident. We studied the concentration and existing state of Cs in the cultured mycelium of the edible mushroom (Pleurotu s ostreatus (Fr.) Kummer Y-1) using NMR. The Cs-133 NMR resulting spec tra exhibited two resonance signals arising from the mycelium whereas one resonance signal from the external medium and CsCl standard soluti on. The chemical form of the signal in the downfield found in the only mycelium might be concerned with Cs accumulation in the mycelium.