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Community structure and carbon metabolism functions of bacterioplankton in the Guangdong coastal zone

Marine Life Science & Technology 2024年第3期6卷 547-561页

作者： Ziqi Peng Pandeng Wang Xiaoqing Luo Qiqi Deng Ziwen Yang Jiaxue Wu Wendong Xian Weicong Yan Xiaozhen Mou Yang Yuan Wenjun Li Jialing Li State Key Laboratory of Biocontrol Guangdong Provincial Key Laboratory of Plant Stress BiologySchool of Marine SciencesSchool of EcologySchool of Life SciencesSun Yat-Sen UniversityGuangzhou 510275China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Department of Biological Sciences Kent State UniversityKentOH 44242USA Marine Microorganism Ecological&Application Lab Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushan 316000China

Coastal ecosystems are an important region for biogeochemical cycling,are a hotspot of anthropogenic disturbance and play a crucial role in global carbon cycling through the metabolic activities of *** can be broadly classified into two lifestyles:free-living(FL)and particle-attached(PA).However,how coastal bacterioplankton the community structure,co-occurrence networks and carbon metabolic functions with different lifestyles are differentiated is still largely *** these processes is necessary to better determine the contributions of coastal bacterioplankton to carbon ***,the characteristics of community structure and carbon metabolism function of bacterioplankton with two lifestyles in the coastal areas of Guangdong Province were investigated using amplicon sequencing,metagenomic,and metatranscriptomic *** results show that the main bacterioplankton responsible for carbon metabolism were the Pseudomonadota,Bacteroidota,and *** microbial community structure,carbon metabolic function,and environmental preferences differ between different *** and PA bacteria exhibited higher carbon fixation and degradation potentials,respectively.A range of environmental factors,such as dissolved oxygen,pH,and temperature,were associated with the community structure and carbon metabolic functions of the *** activities,such as nutrient discharge,may affect the distribution of functional genes and enhance the carbon degradation functions of *** conclusion,this study increased the understanding of the role of microorganisms in regulating carbon export in coastal ecosystems with intense human activity.

关键词： particle-attached and free-living bacterioplankton Community structure Carbon metabolism Coastal ecosystem

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