講演詳細

微生物部門[Forest Microbes]

日付	2025年3月22日
開始時刻	11:00
会場名	S32
講演番号	M-7
発表題目	The ecological patterns of the key arbuscular mycorrhizal fungi detected in the roots of Cryptomeria japonica The ecological patterns of the key arbuscular mycorrhizal fungi detected in the roots of Cryptomeria japonica
所属	三重大学
要旨本文	Arbuscular mycorrhizal fungi (AMF) form symbiotic associations with Cryptomeria japonica (Cupressaceae). We aimed to reveal its main AMF taxa and clarify their ecology. We used plant barcoding and fungal metabarcoding on root and soil samples from three environmentally different sites in central Japan over five years. We detected 2,155 operational taxonomic units (OTUs) of AMF including 134 and 34 major and dominant OTUs, respectively (average relative abundance > 1% and 10%), in the roots of C. japonica. The occurrence of the dominant OTUs suggested intra-radical competition or complementarity, seasonal and spatial shifts between root and soil habitats, and microhabitat-dependent transitions to neighboring herbaceous plants. They belonged to Dominikia, Glomus, Microkamienskia, Rhizophagus, Sclerocystis, and unknown taxa of Glomeraceae. These AMFs must be isolated, described, and tested on C. japonica seedlings.
著者氏名	○DJOTAN, Kevin1,2 ・ MATSUSHITA, Norihisa1 ・ FUKUDA, Kenji1
著者所属	1The University of Tokyo ・ 2Mie University
キーワード	Microbial ecology, Amplicon sequencing, Key AMF, Sugi, Japanese cedar
Key word	Microbial ecology, Amplicon sequencing, Key AMF, Sugi, Japanese cedar