The cultivable endophytic community of Norway spruce ectomycorrhizas from microhabitats lacking ericaceous hosts is dominated by ericoid mycorrhizal Meliniomyces variabilis |
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Authors: | Martin Vohník Libor Mrnka Tereza Luke?ová María Clara Bruzone Petr Kohout Judith Fehrer |
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Institution: | 1. Department of Mycorrhizal Symbioses, Institute of Botany ASCR, Pr?honice 252 43, Czech Republic;2. Department of Plant Experimental Biology, Faculty of Science, Charles University in Prague, Prague 128 44, Czech Republic;3. Laboratorio de Microbiología Aplicada y Biotecnología, Centro Regional Universitario Bariloche, INIBIOMA (Universidad Nacional del Comahue – CONICET), San Carlos de Bariloche, Río Negro, Argentina;4. DNA Laboratory, Institute of Botany ASCR, Pr?honice 252 43, Czech Republic |
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Abstract: | Most of the temperate conifers associate with ectomycorrhizal fungi, but their roots also harbour a wide range of endophytes. We focused on ascomycetes associating with basidiomycetous ectomycorrhizas of Norway spruce in a temperate montane forest in central Europe and found that the majority of the co-associated fungi belonged to the Rhizoscyphus ericae aggregate (REA), being dominated by Meliniomyces variabilis. We further tested the ability of representative isolates to colonize spruce root tips and European blueberry (Vaccinium myrtillus) hair roots in an agar system as well as their effect on blueberry growth in a peat-agar system. M. variabilis intracellularly colonized spruce (Picea abies) root tip cortex, formed ericoid mycorrhizas in blueberry and enhanced blueberry shoot and root growth in comparison with non-inoculated plants. Our findings suggest that spruce ectomycorrhizas may represent selective niches for ericoid mycorrhizal fungi in habitats lacking suitable ericaceous hosts. |
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Keywords: | Dark septate endophytes Ectomycorrhiza Endophytic fungi Ericaceae Ericoid mycorrhiza Root associated fungi |
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