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Revealing CO_(2)-Fixing SAR11 Bacteria in the Ocean by Raman-Based Single-Cell Metabolic Profiling and Genomics

BioDesign Research 2022年第1期2022卷 52-67页

作者： Xiaoyan Jing Yanhai Gong Teng Xu Paul ADavison craig macgregor-chatwin CNeil Hunter La Xu Yu Meng Yuetong Ji Bo Ma Jian Xu Wei E.Huang Single-Cell Center CAS Key Laboratory of BiofuelsShandong Key Laboratory of Energy Genetics and Shandong Institute of Energy ResearchQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdaoShandongChina Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdaoShandongChina University of Chinese Academy of Sciences BeijingChina Plants Photosynthesis and SoilSchool of BiosciencesUniversity of SheffieldSheffield S102TNUK Disease and Fishery Drugs Research Center Marine Biology Institute of Shandong ProvinceQingdaoShandongChina Single-Cell Biotechnology LtdQingdaoShandongChina Department of Engineering Science University of OxfordParks RoadOX13PJ OxfordUK

The majority of marine microbes remain uncultured,which hinders the identification and mining of CO_(2)-fixing genes,pathways,and chassis from the ***,we investigated CO_(2)-fixing microbes in seawater from the euphotic zone of the Yellow Sea of China by detecting and tracking their ^(13)C-bicarbonate(^(13)C-HCO_(3)^(-))intake via single-cell Raman spectra(SCRS)*** target cells were then isolated by Raman-activated Gravity-driven Encapsulation(RAGE),and their genomes were amplified and sequenced at one-cell *** single-cell metabolism,phenotype and genome are *** identified a notyet-cultured Pelagibacter spp.,which actively assimilates ^(13)C-HCO_(3)^(-),and also possesses most of the genes encoding enzymes of the Calvin-Benson cycle for CO_(2) fixation,a complete gene set for a rhodopsin-based light-harvesting system,and the full genes necessary for carotenoid *** four proteorhodopsin(PR)genes identified in the Pelagibacter *** confirmed by heterologous expression in *** results suggest that hitherto uncultured Pelagibacter *** light-powered metabolism to contribute to global carbon cycling.

关键词： metabolism Benson hinder

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