首页|Virus-Host Interactions Drive Contrasting Bacterial Diel Dynamics in the Ocean

Virus-Host Interactions Drive Contrasting Bacterial Diel Dynamics in the Ocean

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Marine organisms perform a sea of diel rhythmicity.Planktonic diel dynamics have been shown to be driven by light,energy resources,circadian rhythms,and the coordinated coupling of photoautotrophs and heterotrophic bacterioplankton.Here,we explore the diel fluctuation of viral production and decay and their impact on the total and active bacterial community in the coastal and open seawaters of the South China Sea.The results showed that the night-production diel pattern of lytic viral production was concurrent with the lower viral decay at night,contributing to the accumulation of the viral population size during the night for surface waters.The diel variations in bacterial activity,community composition,and diversity were found highly affected by viral dynamics.This was revealed by the finding that bacterial community diversity was positively correlated to lytic viral production in the euphotic zone of the open ocean but was negatively related to lysogenic viral production in the coastal ocean.Such distinct but contrasting correlations suggest that viral life strategies can not only contribute to diversifying bacterial community but also potentially piggyback their host to dominate bacterial community,suggesting the tightly synchronized depth-dependent and habitat-specific diel patterns of virus-host interactions.It further implies that viruses serve as an ecologically important driver of bacterial diel dynamics across the ocean,highlighting the viral roles in bacterial ecological and biogeochemical processes in the ocean.

Xiaowei Chen、Chen Hu、Wei Wei、Yunlan Yang、Markus G.Weinbauer、Hongbo Li、Shiying Ren、Ruijie Ma、Yibin Huang、Tingwei Luo、Nianzhi Jiao、Rui Zhang

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State Key Laboratory of Marine Environmental Science,College of Ocean and Earth Sciences,Fujian Key Laboratory of Marine Carbon Sequestration,Xiamen University,Xiamen 361102,PR China

College of the Environment and Ecology,Xiamen University,Xiamen 361102,PR China

Research Center for Environmental Ecology and Engineering,School of Environmental Ecology and Biological Engineering,Wuhan Institute of Technology,Wuhan 430205,PR China

Sorbonne Universités,UPMC,Université Paris 06,CNRS,Laboratoire d'Océanographie de Villefranche(LOV),Villefranche-sur-Mer 06230,France

National Marine Environmental Monitoring Center,Ministry of Ecological Environment,Dalian 116023,PR China

Department of Ocean Sciences,University of California,Santa Cruz,CA,USA

NOAA/OAR Pacific Marine Environmental Laboratory,Seattle,WA,USA

Institute for Advanced Study,Shenzhen University,Shenzhen 518055,PR China

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Senior User Project of RV KEXUE(KEXU-E2020G10)of Center for Ocean Mega-Science,Chinese Academy of SciencesNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaState Key Laboratory of Marine Environmental Science at Xiamen Universityinternational collaborative project on"Marine Biogeochemistry and Ecotoxicology"funded by the Program of Introducing TalentsChina Postdoctoral Science FoundationNatural Science Foundation of Fujian Province of ChinaChina Postdoctoral Science Foundation

418611440184218810291951209419060852021YFE0193000BP07190302021M6918632023J050172019M662237

2024

10.34133/research.0213

研究(英文)

研究(英文)

CSTPCD
ISSN：
年,卷(期)：2024.2024(2)
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