| Co-Investigator(Kenkyū-buntansha) |
松田 陽介 三重大学, 生物資源学研究科, 教授 (30324552)
酒井 敦 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (70353696)
金谷 整一 国立研究開発法人森林研究・整備機構, 森林総合研究所, 主任研究員 等 (90353648)
岩泉 正和 国立研究開発法人森林研究・整備機構, 森林総合研究所 林木育種センター, 主任研究員 等 (50391701)
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| Budget Amount *help |
¥43,680,000 (Direct Cost: ¥33,600,000、Indirect Cost: ¥10,080,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2020: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2019: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000)
Fiscal Year 2018: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
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| Outline of Final Research Achievements |
Ectomycorrhizal (ECM) fungi are symbiotic microbes colonizing tree roots and helping the growth of the host trees. In previous studies, we discovered new ECM fungi specific to endangered host trees and the application of these fungi to host conservation is expected. However, fruitbodies of these specific fungi are rarely attainable and difficult to use in the inoculation to hosts. In this study, we investigated the possibility of using soil spore banks, dormant spores in forest soil, for the inoculation. Our results showed that host seedlings were effectively colonized by these specific fungi by filtering out larger sclerotia of other competing fungi before the application of soil water solution to host seedlings. We also found that outcrossing induced by mixing spore banks from different sites at the inoculation can improve the function of these specific fungi, which suffer inbreeding depression in the small isolated populations.
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