[Effect of heavy metal ions on the soil mycobiota in Kryvyi Rih region].

Ecological-taxonomic analysis of mycobiota from heavy metal polluted soils in Kryvyi Rig town and its residential suburbs are presented in this study The mycobiota consists of45 filamentous species (127 strains) belonging to 28 genera from 3 divisions. Among them Myrothecium leucotrichum was described as a new species for Ukrainian mycobiota while Absidia cylindrospora and Gongronella butleri as rare species. Paecilomyces lilacinus and P. marquandii dominated in the soils near the factory Kryvorizhstal and South Ore Mining and Processing Enterprises. In these soils, Mycelia sterilia (white and dark) and dark-colored micromycetes occurred with a high frequency (up to 30%). Results obtained allow us to conlude that ecological conditions in Kryvyi Rig town are unfavourable.

[Copper ions sorption by soil micromycetes].

This study gives a comparison of copper ions sorption ability of micromycetes (72 strains) isolated from both modern and archaeological soils polluted with heavy metals. Copper sorption ability was inter- and intra-specific with Cladosporium cladosporioides 77, C. cladosporioides 716 and Stachybotrys chartarum 357, S. chartarum 424 strains being the most efficient sorbents. In general, copper sorption was significantly higher for strains of fungi isolated from modern soils compared to those from archaeological soils. Melanised strains of fungi sorbed copper significantly better than non-melanised fungi.