| Project/Area Number |
10460064
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
林学
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HOGETSU Taizo Asian Natural Environmental Science Center, The University of Tokyo Professor, アジア生物資源環境研究センター, 教授 (10107170)
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| Co-Investigator(Kenkyū-buntansha) |
NARA Kazuhide Asian Natural Environmental Science Center, The University of Tokyo Assistant professor, アジア生物資源環境研究センター, 助手 (60270899)
KOJIMA Katsumi Asian Natural Environmental Science Center, The University of Tokyo Associate professor, アジア生物資源環境研究センター, 助教授 (80211895)
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| Project Period (FY) |
1998 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥13,000,000 (Direct Cost: ¥13,000,000)
Fiscal Year 2000: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1999: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1998: ¥7,900,000 (Direct Cost: ¥7,900,000)
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| Keywords | ectomycorrhiza / symbiotic function / 14C tracer experiment / Dipterocarp / inoculum / soil remediation material / reproduction / microsatellite (SSR) marker / アカマツ / フタバガキ科 / コツブタケ / 外生菌根菌接種源 / 母樹 / 培養土 / チチアワタケ / ハナイグチ / カラマツ林 / ISSRマーカー / 繁殖様式 / ジェネット |
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| Research Abstract |
The aim of this project was to establish novel techniques of inoculation of ectomycorrhizal (ECM) fungi to tree seedlings. In addition, we also investigated symbiotic functions and reproduction of ECM fungi as the basis for the establishment. We have obtained a lot of knowledge from the basic investigation, and have indicated a practical possibility that both ECM seedlings and soil on which ECM seedlings are cultivated work well as ECM fungal inocula. Main outcomes are as follows :
1. Basic investigations : (1) Competitive interaction between ECM fungi was observed in detail. (2) By tracer experiments, it was clearly indicated that photosynthetic products are not transferred between plants that are linked each other by mycelia of ECM fungi. (3)By DNA polymorphism analyses of ECM fungi, extents of mycelial extension and spore dispersal were defined and gene flow was also inferred by microsatellite polymorphic analysis. (4) By DNA polymorphism analysis of ectomycorrhizae, the subterranean genet was defined. (5) ECM community structure was investigated by ITS polymorphism in mycorrhizae.
2. Applied investigations : (1) Infection patterns from an ECM seedling to non-ECM seedlings were investigated and effectiveness of the ECM seedling as an ECM fungal inoculum was indicated. (2) Soil on which ECM seedlings were cultivated was also investigated and its effectiveness as an ECM fungal inoculum was also indicated. (3) Mixing the soil with several materials raised the infection efficiency.
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