Evidence of species interactions within an ectomycorrhizal fungal community

• Ectomycorrhizal fungal communities can be structured by abiotic and biotic factors. Here, we present evidence for community structuring by species interactions. • We sampled ectomycorrhizas and forest floor seven times during a 13-month period. The presence of various ectomycorrhizal fungal specie...

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Bibliographic Details
Published in:The New phytologist 2005-01, Vol.165 (1), p.305-316
Main Authors: Koide, Roger T., Xu, Bing, Sharda, Jori, Lekberg, Ylva, Ostiguy, Nancy
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
antibiosis
Biological and medical sciences
Cenococcum geophilum
Clavulina cinerea
Community structure
competition
competitive network
Economic plant physiology
ectomycorrhizae
ectomycorrhizal fungi
Ectomycorrhizas
Forest litter
forest trees
Fundamental and applied biological sciences. Psychology
Fungi
Hyphae
Hyphae - physiology
Mycology
Mycorrhizae - physiology
mycorrhizal fungi
Nitrogen
nonrandom distribution
Parasitism and symbiosis
Pinus resinosa
Plant physiology and development
Population Dynamics
Soil fungi
Species
species diversity
Symbiosis
Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...)
Tannins
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Summary:• Ectomycorrhizal fungal communities can be structured by abiotic and biotic factors. Here, we present evidence for community structuring by species interactions. • We sampled ectomycorrhizas and forest floor seven times during a 13-month period. The presence of various ectomycorrhizal fungal species was determined for each sample, and species co-occurrence analyses were performed. • For both ectomycorrhizas and forest floor samples there was significantly less co-occurrence among species within the community than expected by chance, mostly because of negative associations involving Cenococcum geophilum or Clavulina cinerea. For some species pairs, there was significantly more co-occurrence than expected by chance. Both nitrogen and tannin additions to the forest floor altered some interactions among species. • The causes of these nonrandom distributions are currently unknown. Future investigations on competition, antibiosis, parasitism and facilitation among ectomycorrhizal fungal species appear to be warranted.
ISSN:0028-646X
1469-8137
DOI:10.1111/j.1469-8137.2004.01216.x