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

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外文摘要：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 bacterioplankton.Bacterioplankton can be broadly classified into two lifestyles:free-living(FL)and particle-attached(PA).However,how coastal bacterioplankton the com-munity structure,co-occurrence networks and carbon metabolic functions with different lifestyles are differentiated is still largely unknown.Understanding these processes is necessary to better determine the contributions of coastal bacterioplankton to carbon cycling.Here,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 techniques.The results show that the main bacterioplankton responsible for carbon metabolism were the Pseudomonadota,Bacteroidota,and Actinomycetota.The microbial community structure,carbon metabolic func-tion,and environmental preferences differ between different lifestyles.FL 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 bacterioplankton.Human activities,such as nutrient discharge,may affect the distribution of functional genes and enhance the carbon degradation functions of bacterioplankton.In conclusion,this study increased the understanding of the role of microorganisms in regulating carbon export in coastal ecosystems with intense human activity.

外文关键词：

Particle-attached and free-living bacterioplanktonCommunity structureCarbon metabolismCoastal ecosystem

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

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作者单位：

State Key Laboratory of Biocontrol,Guangdong Provincial Key Laboratory of Plant Stress Biology,School of Marine Sciences,School of Ecology,School of Life Sciences,Sun Yat-Sen University,Guangzhou 510275,China

Marine Microorganism Ecological & Application Lab,Marine Science and Technology College,Zhejiang Ocean University,Zhoushan 316000,China

Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China

Department of Biological Sciences,Kent State University,Kent,OH 44242,USA

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出版年：

2024

DOI：

10.1007/s42995-024-00245-x

海洋生命科学与技术(英文)

ISSN：

年,卷(期)：2024.6(3)