It was supposed that mycorrhizal and endophytic micromycetes take part in transfere of mineral substances and 137Cs from sphagnum mosses and peat litter to ericoid plants. This article deals with the estimation of the distribution of endophytic fungi in these plants. Micromycetes of 42 species belonging to 25 genera were identified. For moss and ericoid plants 5 common species of endophytic fungi were found. The investigation revealed that micromycetes are the connecting link between sphagnum, peat litter and vascular plants in the process of redistribution of elements of mineral nutrition and 137Cs on sphagnous ombrotrophic bogs of Ukrainian Polessye and other regions.
Keywords: Sphagnum, Oxycoccus, Vaccinium, radionuclides, bogs, micromycetes, mycorrhiza, Ukraine.