Uptake of Radiocesium by Hypha of Basidiomycetes

Radiotracer Experiments

Abstract

Uptake of Cs and its effects on mushroom growth were studied using a simulated medium in which K⁺ and NH₄⁺ concentrations were lowered as much as possible. The hyphae of H. vinosophyllum did not grow in the simulated medium with 2 mmol CsCl. The growth increased with the addition of K, indicating that K lowers the toxicity of Cs to mushrooms in the simulated medium. The inhibition of mushroom growth by Cs was greater than that by Rb. The uptake of Cs was reduced by the addition of the monovalent cations of K⁺, Rb⁺, and NH₄⁺