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	2021/07
形態種別	学術雑誌
査読	査読あり
標題	Cryogenian Origin and Subsequent Diversification of the Plant Cell-Wall Enzyme XTH Family
執筆形態	共著
掲載誌名	Plant and Cell Physiology
掲載区分	国外
出版社・発行元	Oxford University Press
著者・共著者	Naoki Shinohara, Kazuhiko Nishitani
概要	Phylogenomic and comparative analyses in this study traced the non-plant origins of the XTH family to Alphaproteobacteria ExoKs, bacterial enzymes involved in loosening biofilms, rather than Firmicutes licheninases, plant biomass digesting enzymes, as previously supposed. The relevant horizontal gene transfer (HGT) event was mapped to the divergence of non-swimming charophycean algae in the Cryogenian geological period. This HGT event was the likely origin of charophycean EG16-2s, which are putative intermediates between ExoKs and XTHs. Another HGT event in the Cryogenian may have led from EG16-2s or ExoKs to fungal CRHs, enzymes that cleave and reconnect chitin and glucans in fungal cell walls. This successive transfer of enzyme-encoding genes may have supported the adaptation of plants and fungi to the ancient icy environment by facilitating their sessile lifestyles. Furthermore, several protein evolutionary steps, i
DOI	https://doi.org/10.1093/pcp/pcab093
researchmap用URL	https://doi.org/10.1093/pcp/pcab093