Biology of the ectomycorrhizal fungal genus, Rhizopogon |
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| Authors: | HUGUES B MASSICOTTE LEWIS H MELVILLE R LARRY PETERSON & RANDY MOLINA |
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| Institution: | University of Northern British Columbia, College of Science and Management, Faculty of Natural Resources and Environmental Studies, 3333 University Way, Prince George, B.C., Canada V2N 4Z9; Department of Botany, University of Guelph, Guelph, Ontario, Canada N1G 2W1; USDA Forest Service, Pacific Northwest Research Station, Forestry Sciences Laboratory, 3200 Jefferson Way, Corvallis, Oregon 97331, USA; Author for correspondence (tel +1 250 960 5813;fax +1 250 960 5538;e-mail;). |
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| Abstract: | The morphology and anatomy of ectomycorrhizas of Rhizopogon arctostaphyli , R. ellenae , R. flavofibrillosus , R. occidentalis , R. rubescens , R. smithii , R. subcaerulescens and R. truncatus synthesized on Ponderosa pine ( Pinus ponderosa ) in glasshouse conditions using spore slurries, are described and compared. All species produced a well-developed Hartig net, and a well-developed fungal mantle. The mantles of R. arctostaphyli , R. smithii and R. subcaerulescens ectomycorrhizas were two-layered with outer mantle hyphae of wider diameter than inner mantle hyphae. The mantle of R. subcaerulescens ectomycorrhizas also had distinctive peg-like structures (cystidia) along peripheral hyphae. Rhizopogon truncatus ectomycorrhizas were tuberculate in morphology and had a rind-like mantle enclosing adjacent roots. In addition, several species exhibited crystal inclusions in the outer mantle, presumably at the interface between mantle and soil. |
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| Keywords: | Rhizopogon Pinus ponderosa anatomy crystals mantle Hartig net |
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