2011 Fiscal Year Final Research Report
Study of dynamic changes in the subterranean mycelial network and translocational domain during ectomycorrhizal symbiosis
| Project/Area Number |
21248018
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HOGETSU Taizo 東京大学, 大学院・農学生命科学研究科, 教授 (10107170)
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| Co-Investigator(Kenkyū-buntansha) |
松下 範久 東京大学, 大学院・農学生命科学研究科, 准教授 (00282567)
呉 炳雲 東京大学, 大学院・農学生命科学研究科, 助教 (10396814)
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| Project Period (FY) |
2009 – 2011
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| Keywords | コメツガ / 根外菌糸体 / 菌糸融合 / シンク能 / トレーサー実験 / オートラジオグラフィー |
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| Research Abstract |
The extraradical mycelium(EXM) is the origin of functions in ectomycorrhizal symbiosis. In this study, we investigated the diversity and spatial distribution of ectomycorrhzial(ECM) fungal species in forest, and the nutrient translocation within EXM and interactions between EXMs using tracer experiments with Pinus densiflora seedlings. Consequently, we found a high species diversity and clustered distribution of ECM fungi. We also demonstrated that all portions in EXM and sporocarps are strong sinks, and that neighboring EXMs interact and connect each other with thick hyphal bands and enable the nutrients to be translocated freely between them. These results led us to new ideas,"frequent EXM reconstruction" and "ectomycorrhizal guild", in relation to EXM dynamics in forest.
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