Metabolic tuning of a stable microbial community in the surface oligotrophic Indian Ocean revealed by integrated meta-omics  

作　　者：Zhang-Xian Xie Ke-Qiang Yan Ling-Fen Kong Ying-Bao Gai Tao Jin Yan-Bin He Ya-Yu Wang Feng Chen Lin Lin Zhi-Long Lin Hong-Kai Xu Zong-Ze Shao Si-Qi Liu Da-Zhi Wang 

机构地区：[1]State Key Laboratory of Marine Environmental Science/College of the Environment and Ecology,Xiamen University,Xiamen,361005,China [2]College of Ocean and Earth Sciences,Xiamen University,Xiamen,361005,China [3]Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Sun Yat-Sen University,Zhuhai,519082,China [4]BGI-Shenzhen,Beishan Industrial Zone 11th Building,Shenzhen,518083,China [5]BGI Education Center,University of Chinese Academy of Sciences,Shenzhen,518083,China [6]Key Laboratory of Marine Genetic Resources,Third Institute of Oceanography,Ministry of Natural Resources of China,Xiamen,361005,China [7]State Key Laboratory Breeding Base of Marine Genetic Resources/Fujian Key Laboratory of Marine Genetic Resources,Xiamen,361005,China [8]Institute of Marine and Environmental Technology,University of Maryland Center for Environmental Science,Baltimore,MD,21202,USA

出　　处：《Marine Life Science & Technology》2022年第2期277-290,共14页海洋生命科学与技术（英文）

基　　金：supported by research grants from the National Natural Science Foundation of China(Project No.41425021);the Ministry of Science and Technology(Project No.2015CB954003);COMRA program(No.DY125-15-R-01);Dayang Yihao 26th cruise program of COMRA.DZW was also supported by the‘Ten Thousand Talents Program’for leading talents in science and technological innovation.

摘　　要：Understanding the mechanisms,structuring microbial communities in oligotrophic ocean surface waters remains a major ecological endeavor.Functional redundancy and metabolic tuning are two mechanisms that have been proposed to shape microbial response to environmental forcing.However,little is known about their roles in the oligotrophic surface ocean due to less integrative characterization of community taxonomy and function.Here,we applied an integrated meta-omics-based approach,from genes to proteins,to investigate the microbial community of the oligotrophic northern Indian Ocean.Insignificant spatial variabilities of both genomic and proteomic compositions indicated a stable microbial community that was dominated by Prochlorococcus,Synechococcus,and SAR11.However,fine tuning of some metabolic functions that are mainly driven by salinity and temperature was observed.Intriguingly,a tuning divergence occurred between metabolic potential and activity in response to different environmental perturbations.Our results indicate that metabolic tuning is an important mechanism for sustaining the stability of microbial communities in oligotrophic oceans.In addition,integrated meta-omics provides a powerful tool to comprehensively understand microbial behavior and function in the ocean.

关 键 词：Microbial community Metabolic tuning METAPROTEOMICS METAGENOMICS Oligotrophic ocean 

分 类 号：Q935[生物学—微生物学]