Document Detail


Fungal associates of Pyrola rotundifolia, a mixotrophic Ericaceae, from two Estonian boreal forests.
MedLine Citation:
PMID:  18795339     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Pyrola rotundifolia (Ericaceae, Pyroleae tribe) is an understorey subshrub that was recently demonstrated to receive considerable amount of carbon from its fungal mycorrhizal associates. So far, little is known of the identity of these fungi and the mycorrhizal anatomy in the Pyroleae. Using 140 mycorrhizal root fragments collected from two Estonian boreal forests already studied in the context of mixotrophic Ericaceae in sequence analysis of the ribosomal DNA internal transcribed spacer region, we recovered 71 sequences that corresponded to 45 putative species in 19 fungal genera. The identified fungi were mainly ectomycorrhizal basidiomycetes, including Tomentella, Cortinarius, Russula, Hebeloma, as well as some ectomycorrhizal and/or endophytic ascomycetes. The P. rotundifolia fungal communities of the two forests did not differ significantly in terms of species richness, diversity and nutritional mode. The relatively high diversity retrieved suggests that P. rotundifolia does not have a strict preference for any fungal taxa. Anatomical analyses showed typical arbutoid mycorrhizae, with variable mantle structures, uniseriate Hartig nets and intracellular hyphal coils in the large epidermal cells. Whenever compared, fungal ultrastructure was congruent with the molecular identification. Similarly to other mixotrophic and autotrophic pyroloids in the same forests, P. rotundifolia shares its mycorrhizal fungal associates with surrounding trees that are likely a carbon source for pyroloids.
Authors:
Lucie Vincenot; Leho Tedersoo; Franck Richard; Houria Horcine; Urmas Kõljalg; Marc-André Selosse
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-09-16
Journal Detail:
Title:  Mycorrhiza     Volume:  19     ISSN:  0940-6360     ISO Abbreviation:  Mycorrhiza     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2009-01-22     Completed Date:  2009-04-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100955036     Medline TA:  Mycorrhiza     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  15-25     Citation Subset:  IM    
Affiliation:
Centre d'Ecologie Fonctionnelle et Evolutive (CNRS, UMR 5175), Equipe Interactions Biotiques, 1919 Route de Mende, 34293, Montpellier Cedex 5, France. lucie.vincenot@cefe.cnrs.fr
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MeSH Terms
Descriptor/Qualifier:
Ascomycota / genetics,  isolation & purification*,  ultrastructure
Biodiversity
Cortinarius / genetics,  isolation & purification*,  ultrastructure
DNA, Fungal / isolation & purification*
DNA, Plant / isolation & purification*
DNA, Ribosomal Spacer / analysis
Ericaceae / genetics,  microbiology*,  ultrastructure
Estonia
Hebeloma / genetics,  isolation & purification*,  ultrastructure
Microscopy, Electron, Transmission
Mycorrhizae* / genetics,  ultrastructure
Sequence Analysis, DNA
Species Specificity
Trees / microbiology*
Chemical
Reg. No./Substance:
0/DNA, Fungal; 0/DNA, Plant; 0/DNA, Ribosomal Spacer

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