A SURVEY OF MYCORRHIZAL PLANTS ON TRUELOVE LOWLAND, DEVON ISLAND, NWT, CANADA

Ecomycorrhizal associations were found on roots of Salix arctica, Dryas integrifolia and Potentilla hyparctica; ericoid mycorrhizae formed on Cassiope tetragona and Vaccinium uliginosum. Ectomycorrhizal roots were often covered with black hyphae resembling the fungus Cenococcum geophilum; sclerotia characteristic of this fungus were found in soil extracts. Only ectomycorrhizal associations were observed, suggesting that the cold, dry winter and cold, wet summer climates in this area of the High Arctic severely limit formation of endomycorrhizae. -from Authors