Abstract
To add to knowledge of ectomycorrhizal (ECM) community structure on the roots of Pinus thunbergii seedlings in a Japanese coastal forest, we sampled naturally regenerated current-year and 1- to 5-year-old seedlings. We classified the 667 root tips on current-year seedlings and the 1,927 root tips on older seedlings into 13 phylotypes based on morphological and genetic analyses. Cenococcum geophilum, members of the families Clavulinaceae, Russulaceae, or Thelephoraceae or the genus Trichophaea, were indicated to be fungi forming P. thunbergii ectomycorrhizas. Among them, C. geophilum and Clavulinaceae sp. 1 were the most or second most dominant species. A species accumulation curve based on the number of samples nearly reached a plateau, with observed species richness equal to 11 species and the Jackknife2 and Chao2 richness estimators indicating 14 and 12 species, respectively. In addition, Simpson’s 1/D was 3.89 and Shannon–Wiener’s H′ was 1.71, indicating a relatively low taxonomic diversity. There was no significant difference in the ectomycorrhizal formation rate, or the occurrence frequency and the number of ECM phylotypes between current-year and older seedlings. These results indicated that less diverse fungi were involved in ectomycorrhizal formation on coastal pine seedlings compared with those in comparable inland forests in the study area.
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Acknowledgments
We thank the editor and two anonymous reviewers for their valuable comments on the manuscript, and the members of the Forest Pathology and Mycology Laboratory, Graduate School of Bioresources, Mie University, for helping during the field survey. This study was supported in part by Grants-in-Aid for Scientific Research to YM from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (1778012, 19688008, and 20651061).
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Matsuda, Y., Noguchi, Y. & Ito, Si. Ectomycorrhizal fungal community of naturally regenerated Pinus thunbergii seedlings in a coastal pine forest. J For Res 14, 335–341 (2009). https://doi.org/10.1007/s10310-009-0140-x
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DOI: https://doi.org/10.1007/s10310-009-0140-x