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Ectomycorrhizas involving sebacinoid mycobionts
Alexander Urban1, Michael Weiss, Robert Bauer
1Universität Wien, Institut für Botanik, Abteilung Mykologie und Kryptogamen, Rennweg 14, A-1030 Wien, Austria. alexurban@yahoo.com
Mycological Research
|May 9, 2003
Summary
Researchers identified Sebacinaceae fungi in ectomycorrhizal plant communities using DNA sequencing and morphological analysis. Sebacina incrustans was confirmed as a fungal partner, revealing common roles for Sebacinaceae in these ecosystems.
Area of Science:
- Mycology
- Plant Pathology
- Molecular Biology
Background:
- Sebacinaceae fungi form ectomycorrhizas with plants.
- Identifying these fungi in situ can be challenging.
- Understanding their ecological roles is crucial.
Purpose of the Study:
- To confirm Sebacinaceae ectomycorrhiza formation.
- To genetically and morphologically characterize Sebacinaceae.
- To investigate the ecological prevalence of Sebacinaceae.
Main Methods:
- Direct DNA amplification from ectomycorrhizal samples.
- Morphological and ultrastructural analysis of mycorrhizas.
- Sequencing of nuclear ribosomal DNA (D1/D2, ITS1, ITS2 regions).
Main Results:
- Characteristic sebacinoid mycorrhizas were identified morphologically.
- Sebacina incrustans was identified as a fungal partner through DNA sequencing.
- Ultrastructural analysis confirmed Sebacinaceae architecture.
- Sebacinaceae appear to be common mycobionts in ectomycorrhizal communities.
Conclusions:
- Morphological and molecular methods effectively characterize Sebacinaceae ectomycorrhizas.
- Sebacina incrustans is confirmed as an ectomycorrhizal symbiont.
- Sebacinaceae play a significant role in various ectomycorrhizal plant communities.