講演詳細

S7. 大規模産地試験から見えてきたダケカンバの環境適応の核心部：気孔・樹形・萌芽・被食防衛・外生菌根[The leading edge of local adaptation of Betula ermanii revealed from range-wide provenance trial: stomata, tree architecture, sprouting, antiherbivore defense and ectomycorrhizal fungi]

日付	2026年3月17日
開始時刻	9:00
会場名	中ホール200
講演番号	S7-4
発表題目	How Environment and Provenance Shape Soil and Root Fungal Diversity in Betula ermanii: Insights for Forest Conservation How Environment and Provenance Shape Soil and Root Fungal Diversity in Betula ermanii: Insights for Forest Conservation
所属	東京大学
要旨本文	Ectomycorrhizal (ECM) fungi regulate belowground processes, including nutrient acquisition and carbon-nitrogen cycling. In ECM-dependent Betula ermanii, shifts in fungal community structure may directly influence seedling establishment under climate change. We analyzed ECM fungal richness and community structure in soils and roots of B. ermanii seedlings across five planting sites and multiple seed source populations. ECM fungal assemblages were primarily structured by planting site. Root ECM communities were additionally shaped by population, suggesting host-driven filtering of fungal partners. Unexpectedly, ECM fungal richness was higher at warmer sites, indicating dominance of stress-tolerant taxa rather than diversity loss. These results demonstrate how environmental filtering and host-mediated selection jointly shape ECM communities and accentuate the importance of incorporating host_fungus compatibility into assisted migration strategies for climate-vulnerable forests.
著者氏名	○Aye Myat Myat Paing1 ・ Nobuhiko Shigyo2 ・ Chunlan Lian1 ・ Susumu Goto1
著者所属	1Graduate School of Agricultural and Life Sciences, The University of Tokyo ・ 2Forestry and Forest Products Research Institute
キーワード	Ectomycorrhizal fungi, Site effect, Conservation strategy, Provenance trial
Key word	Ectomycorrhizal fungi, Site effect, Conservation strategy, Provenance trial