University of the Ryukyus · Tropical Biosphere Research Center · 助教

Research keywords生物学・基礎生命科学・植物－微生物相互作用・サンゴ礁・バイオレメディエーション・環境汚染物質・ブルーカーボン・Botany・Ecology

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• Does coral community diversity increase microflora diversity and enhance environmental adaptation?2025 · Nakano, Y; Ide, K; Ito, M; Nishikawa, Y; Fujimura, H; Takeyama, H
• Vegetation variety affected by local environments in a coral reef lagoon2024 · Tozaki, K; Nishihara, GN; Kawate, A; Konishi, T; Sato, Y; Ito, M; Fujimura, H; Tanaka, A
• The Cell Wall Characterization of Brown Alga Cladosiphon okamuranus during Growth2023 · Miwa, Y; Awanthi, MGG; Soga, K; Tanaka, A; Ito, M; Numata, Y; Sato, Y; Konishi, T
• Characterization of carotenoid-producing Muricauda sp. strains isolated from the reef-building coral Galaxea fascicularis and subtropical seawater2023 · <jats:p>Bacterial symbionts in corals and coral-associated zooxanthellae are attracting increasing attention as potential probiotics. Some members of the family Flavobacteriaceae are zooxanthellae-associated bacteria, which are known to protect zooxanthellae from stresses such as heat and light by producing carotenoids that reduce reactive oxygen species production. This study characterized two Flavobacteriaceae bacteria, Muricauda sp. strains ORYM1 (NBRC115792) and ORYM2 (NBRC115793), isolated from the reef-building coral Galaxea fascicularis and its surrounding seawater in Okinawa, Japan, respectively. The Muricauda sp. strain ORYM2 was isolated from subtropical seawater, and carotenoid production was assessed using ORYM2 as well as ORYM1, which was previously isolated from G. fascicularis. De novo genome sequencing revealed that both strains contain complete sets of zeaxanthin biosynthesis genes, similar to those found in other Muricauda spp. Thin-layer chromatography and high-performance liquid chromatography analyses demonstrated that ORYM1 and ORYM2 produce several carotenoids. The bacterial strains and carotenoids identified in this study provide insights into the biological roles of zooxanthellae-associated bacteria in protecting zooxanthellae and reef-building corals from environmental stresses.</jats:p>

• 沖縄県沿岸域の埋立事業が周辺海域の生物相に与える影響の評価手法の確立2023 · ■■■
• 沖縄微生物ライブラリーを活用したモズク初期成長促進技術の開発2023 · ■■■
• ミミズの土壌肥沃度改善機能の活用に向けて -圃場実証と機能の定量化-
• 海藻の生育を支える海藻－微生物相互作用の全体像の解明

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