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Biology of the ectomycorrhizal fungal genus, Rhizopogon IV. Comparative morphology and anatomy of ectomycorrhizas synthesized between several Rhizopogon species on Ponderosa pine (Pinus ponderosa)

Published online by Cambridge University Press:  01 May 1999

HUGUES B. MASSICOTTE ,
LEWIS H. MELVILLE ,
R. LARRY PETERSON  and
RANDY MOLINA
HUGUES B. MASSICOTTE
Affiliation:
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
LEWIS H. MELVILLE
Affiliation:
Department of Botany, University of Guelph, Guelph, Ontario, Canada N1G 2W1
R. LARRY PETERSON
Affiliation:
Department of Botany, University of Guelph, Guelph, Ontario, Canada N1G 2W1
RANDY MOLINA
Affiliation:
USDA Forest Service, Pacific Northwest Research Station, Forestry Sciences Laboratory, 3200 Jefferson Way, Corvallis, Oregon 97331, USA
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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.

Keywords

RhizopogonPinus ponderosaanatomycrystalsmantleHartig net
Type
Research Article
Information
The New Phytologist , Volume 142 , Issue 2 , May 1999 , pp. 355 - 370
Copyright
© Trustees of the New Phytologist 1999

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