Host Effects on Ectomycorrhizal Fungal Communities: Insight from Eight Host Species in Mixed Conifer-Broadleaf Forests

To advance our understanding of host effects on the community structure of ectomycorrhizal fungi (EMF), EMF communities were compared among different host species, genera and families in two mixed conifer-broadleaf forests in Japan. Using molecular identification methods we examined EMF root tips of...

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Bibliographic Details
Published in:The New phytologist 2007-04, Vol.174 (2), p.430-440
Main Authors: Ishida, Takahide A., Nara, Kazuhide, Hogetsu, Taizo
Format: Article
Language:English
Subjects:
Abies
Betula
Betulaceae
Betulaceae - microbiology
Betulaceae - physiology
Biodiversity
Biological taxonomies
Carpinus
Coniferous forests
Ecosystem
ectomycorrhizal fungal (EMF) community
Fagaceae
Fagaceae - microbiology
Fagaceae - physiology
Fagus
Fungi
host range and specificity
Host specificity
internal transcribed spacer (ITS)
mixed conifer–broadleaf forest
Mycology
Mycorrhizae - physiology
Old growth forests
Pinaceae
Pinaceae - microbiology
Pinaceae - physiology
Pine trees
Plant Roots - microbiology
Plant Roots - physiology
Quercus
Rapid Report
Root tips
Secondary forests
Symbiosis - physiology
terminal restriction fragment length polymorphism (T‐RFLP)
Trees
Trees - microbiology
Trees - physiology
Tsuga
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Summary:To advance our understanding of host effects on the community structure of ectomycorrhizal fungi (EMF), EMF communities were compared among different host species, genera and families in two mixed conifer-broadleaf forests in Japan. Using molecular identification methods we examined EMF root tips of eight coexisting species belonging to six genera (three families): Abies and Tsuga (Pinaceae), Betula and Carpinus (Betulaceae) and Fagus and Quercus (Fagaceae). In total, 205 EMF species were detected, and the total richness was estimated to exceed 300 species using major estimators. Of the 55 EMF species occurring three or more times, eight showed significantly biased host preference. A Mantel test showed a significantly negative correlation between EMF community similarity and host taxonomic distance. Detrended correspondence analysis separated EMF communities mainly by host taxonomic and successional status. Thus, EMF communities are similar on hosts with similar taxonomic and successional status. A significant proportion of EMF exhibited host specificity, which may contribute to the extremely diverse EMF community in conifer-broadleaf forests.
ISSN:0028-646X
1469-8137
DOI:10.1111/j.1469-8137.2007.02016.x