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Abstract Detail


Symbioses: Plant, Animal, and Microbe Interactions

Southworth, Darlene [1], Frank, Jonathan [2].

Listening to roots: a new mycorrhizal fungus on Cercocarpus (Rosaceae).

Mycorrhizal assemblages characterized by molecular data frequently differ from collections of mycorrhizal sporocarps at the same site. Geopora (earth pore) species are frequent mycobionts of ectomycorrhizal roots, but except for G. cooperi, they rarely match species by molecular methods. Among the mycobionts of ectomycorrhizas with curl-leaf mountain mahogany, Cercocarpus ledifolius (Rosaceae), was a fungal species with a 91% BLAST match to G.arenicola. To determine the species of Geopora,we surveyed for hypogeous sporocarps under C.ledifolius at sites in southern Oregon where the Geopora mycorrhizas had been collected and identified by DNA sequences of the ITS region. We found sporocarps of a Geopora species with 100% BLAST match to the mycorrhizas. Morphological characters of a white hymenium, inrolled entire margin, and large spores, along with a hypogeous habit and a mycorrhizal host of C. ledifolius distinguished these specimens from described species. We describe a new species, Geopora cercocarpi.

Broader Impacts:


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1 - Department Of Biology, 866 Blaine St, Ashland, OR, 97520, USA
2 - Southern Oregon University, Biology, Ashland, OR, 97520, USA

Keywords:
Rosaceae
Cercocarpus
fungi
mycorrhiza
ectomycorrhiza
Geopora.

Presentation Type: Oral Paper:Papers for Topics
Session: 38
Location: Portland Room/Chase Park Plaza
Date: Tuesday, July 12th, 2011
Time: 4:45 PM
Number: 38005
Abstract ID:99


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