EFFECT OF DIFFERENT CARBON AND NITROGEN-SOURCES AND VITAMINS ON GROWTH OF AZOSPIRILLUM SPP ISOLATED FROM CONIFEROUS ECTOMYCORRHIZAE AND SPOROCARPS OF ECTOMYCORRHIZAL FUNGI

Effects of different substrates (sources of C and N, vitamins, soil - and pine root extracts, root exudates of pine seedlings, extracts from mycelia of ectomycorrhizal fungi) on the growth of three isolates of Azospirillum spp. associated with ectomycorrhizal fungi (Rhizopogon vi nicolor, Laccaria laccata, and Hebeloma crustuliniforme) were studied. Physiological differences between different bacterial strains were ob served. These differences involved: growth kinetics, abilities for uti lization of different carbon sources, and the reaction to the presence of natural exudates and/or extracts in the medium.