Abstract
We investigated the ectomycorrhizal (ECM) fungal colonization status of Pinus thunbergii mature trees and regenerating seedlings varying in age in coastal pine forests on the east coast of Korea. We established one 20 × 20-m plot at each of two study sites at P. thunbergii coastal forests in Samcheok. Fifty soil blocks (5 × 5 × 15 cm) were sampled at regular intervals, and ten P. thunbergii seedlings of age 0, 1–3, 3–5, and 5–10 years were sampled in each study plot. In total of 27 ECM fungal taxa, Cenococcum geophilum was dominant, followed by Russula sp., Sebacina sp., and unidentified Cortinuris sp. in mature trees. In 0-year-old seedlings, some fungal species such as Sebacina sp., C. geophilum, and unidentified Cortinarius sp. were dominant whereas only C. geophilum was dominant after 1 year, and there were no apparent succession patterns in ECM fungal compositions beyond a host age of 1 year. Most ECM fungal taxa that had colonized seedlings of each age class were also observed in roots of mature trees in each site. These taxa accounted for 86.7–100% and 96.4–98.4% of ECM abundance in seedlings and mature trees, respectively. The results indicate that the species composition of ECM fungal taxa colonizing seedlings of different age in forests is similar to that of surrounding mature trees. Our results also showed that C. geophilum is a common and dominant ECM fungus in P. thunbergii coastal forests and might play a significant role in their regeneration.
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Acknowledgments
This study was carried out with the support of “Forest Science & Technology Projects (Project No. S210809L010110)” provided by the Korea Forest Service. We acknowledge special support from the members of the Forest Resources Development and Resources Protection Laboratories at Kangwon National University.
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Obase, K., Cha, J.Y., Lee, J.K. et al. Ectomycorrhizal fungal communities associated with Pinus thunbergii in the eastern coastal pine forests of Korea. Mycorrhiza 20, 39–49 (2009). https://doi.org/10.1007/s00572-009-0262-1
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DOI: https://doi.org/10.1007/s00572-009-0262-1