TYPES OF ECTOMYCORRHIZAE AND MYCOBIOINDICATION OF FOREST SITE POLLUTION

Types of ectomycorrhizae on Norway spruce were determined in soil core s from two differently polluted forest research plots from the emmissi on zone of the Sostanj Thermal Power Plant (TPP). All fine roots and e ctomycorrhizal root tips were counted and the percentages of different types were calculated. Additionaly, soil and mycorrhizae from underne ath fungal fruitbodies were collected in order to characterize new typ es of ectomycorrhizae by classical anatomical and by molecular methods . 17 types of ectomycorrhizae were determined on 28443 root tips in so il cores from the polluted plot (Zavodnje). On the less polluted plot (Mislinja) 24 different types were determined on 38502 root tips in eq ual volume and number, of soil cores. In the discussiion of mycobioind ication of forest site pollution we employed a supposedly pollution se nsitive (Hydnum rufescens), and supposedly unsensitive (Paxillus invol utus) fungal species in ectomycorrhizae. However, further screening of comparable forest sites differently influenced by pollution is needed to confirm the choice of species.