Effects of environmental stress factors on ectomycorrhizal fungi in vitro

The reaction of various ectomycorrhizal fungi to environmental stress factors was examinated in a screening program. Tolerance to acid and heavy metals, resistance to antagonists, and reactions to automobile exhaust fumes were tested. Differences in reaction between the several ectomycorrhizal species and strains were observed. These results confirm that the susceptibility of ectomycorrhizal fungi to environmental stress factors varies from species to species, but also from strain to strain within a species. Pure culture synthesis with Picea abies showed the symbiotic potential of the selected fungi. Key words: ectomycorrhizal fungi, Picea abies.

Pure culture synthesis and host specificity of red alder mycorrhizae

Cultures of 28 ectomycorrhizal fungi were tested in pure culture syntheses for mycorrhiza formation with red alder. Only 4 of the 28 fungi tested formed characteristic ectomycorrhizae: Alpova diplophloeus, Paxillus involutus, Aslraeus pteridis, and Scleroderma hypogaeum. These mycorrhizae are briefly described, and the specialization of alder mycorrhizae is discussed.

Pure culture synthesis of bearberry mycorrhizae

Synthesis of bearberry (Arctostaphylos uva-ursi) ectendomycorrhizae in pure culture by Hebeloma crustuliniforme, Laccaria laccata, Lactarius sanguifluus, Pisolithus tinctorius, Poria terrestris vars. cyaneus and subluteus, Rhizopogon vinicolor, and Thelophora terrestris is described.