研究者情報 | 神奈川大学

ニシタニ　カズヒコ Nishitani Kazuhiko 西谷　和彦所属神奈川大学理学部理学科神奈川大学大学院理学研究科理学専攻（生物科学領域）職種教授
言語種別	英語
発行・発表の年月	2023/08
形態種別	学術雑誌
査読	査読あり
標題	Environmental pH signals the release of monosaccharides from cell wall in coral symbiotic alga
執筆形態	共著
掲載誌名	eLife
掲載区分	国外
出版社・発行元	eLife
巻・号・頁	12,pp.e80628
著者・共著者	Yuu Ishii, Hironori Ishii, Takeshi Kuroha, Ryusuke Yokoyama, Ryusaku Deguchi, Kazuhiko Nishitani, Jun Minagawa, Masakado Kawata, Shunichi Takahashi, Shinichiro Maruyama
概要	Reef-building corals thrive in oligotrophic environments due to their possession of endosymbiotic algae. Confined to the low pH interior of the symbiosome within the cell, the algal symbiont provides the coral host with photosynthetically fixed carbon.. Here we show, using cultured symbiotic dinoflagellate, Breviolum sp., that decreases in pH directly accelerates the release of monosaccharides, i.e., glucose and galactose, into the ambient environment. Under low pH conditions, the cell surface structures were deformed and genes related to cellulase were significantly upregulated in Breviolum. Importantly, the release of monosaccharides was suppressed by the cellulase inhibitor, glucopyranoside, linking the release of carbon to degradation of the agal cell wall. Our results suggest that the low pH signals the cellulase-mediated release of monosaccharides from the algal cell wall as an environmental response in coral reef ecosystems.
DOI	https://doi.org/10.7554/eLife.80628
researchmap用URL	https://doi.org/10.7554/eLife.80628