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Microeukaryotes have unexpected importance in cold seep food webs through predation and parasitism

文献类型：期刊论文

作者Li, Longzhao3,4,5; Zhao, Feng1,3,4,5; Filker, Sabine2; Liu, Weiyue3,5; Zhao, Rongjie5; Wan, Yuanyuan3,5; Xu, Kuidong1,3,4,5
刊名PROGRESS IN OCEANOGRAPHY
出版日期2024-03-01
卷号222页码:13
关键词Cold seeps Eukaryotes Prokaryotes Cross-domain networks Bio-interactions qPCR
ISSN号0079-6611
DOI10.1016/j.pocean.2024.103216
通讯作者Zhao, Feng(fzhao@qdio.ac.cn) ; Xu, Kuidong(kxu@qdio.ac.cn)
英文摘要Cold seeps are inhabited by a high abundance of chemosynthetic prokaryotes and invertebrates. However, a complete food web between invertebrates and prokaryotes cannot be established without the important link of microeukaryotes. Yet, question such as which microeukaryotes are at work in cold seeps is still mostly open. We, therefore, compared the biological communities in cold seeps and adjacent areas of the South China Sea by the metabarcoding and quantitative PCR (qPCR) of nuclear 18S and 16S rRNA genes, and estimated the potentially ecological roles of microeukaryotes by cross-domain microbial network analysis. The anaerobic methane oxidizing archaea (ANME), sulfate-reducing bacteria (SRB) and Radiolaria accounted for most variations between microbial communities from the cold seeps and adjacent areas. A significant correlation was detected between the copy numbers of 18S rRNA gene and communities of the ANME and SRB in cold seeps, indicating close links between microeukaryotes and chemosynthetic prokaryotes. After adding microeukaryotic nodes microbial network became more complex, and the negative correlation proportion and average path length increased, suggesting increased predation and parasitism. The ANME and SRB groups were mainly negatively correlated with and potentially preyed by Acantharea and Cercozoa, which were then negatively correlated with annelids and mollusks. Parasitic microeukaryotes of Syndiniales widely existed in cold seeps and had close relationships with Polycystinea. Parasitism might cause the death of Polycystinea and the release of Syndiniales spores, which may be an important carbon source for the cold seep biota. Using Mantel analyses, we also demonstrated that trophic relationships are closer in cold seeps than in the adjacently deep-sea sediments, and that microeukaryote-metazoans linkages in cold seeps are closer than those between prokaryotes and metazoans. Overall, our study outlines the main components of food webs in cold seeps and highlights that microeukaryotes have an unexpected importance in the carbon cycle.
WOS关键词DIVERSITY ; METHANE ; COMMUNITY ; OXIDATION ; SEDIMENTS ; NETWORKS ; PATTERNS ; PROTISTS
资助项目Science and Tech-nology Innovation Project of Laoshan Laboratory[LSKJ202203102] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22050203] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Youth Innovation Promotion Association CAS[2022206]
WOS研究方向Oceanography
语种英语
WOS记录号WOS:001201734200001
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://ir.qdio.ac.cn/handle/337002/185136]  
专题海洋研究所_海洋生物分类与系统演化实验室
通讯作者Zhao, Feng; Xu, Kuidong
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Univ Kaiserslautern Landau, Dept Mol Ecol, D-67663 Kaiserslautern, Germany
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Laoshan Lab, Qingdao 266237, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Lab Marine Organism Taxon & Phylogeny, Qingdao Key Lab Marine Biodivers & Conservat, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 Li, Longzhao,Zhao, Feng,Filker, Sabine,et al. Microeukaryotes have unexpected importance in cold seep food webs through predation and parasitism[J]. PROGRESS IN OCEANOGRAPHY,2024,222:13.
APA Li, Longzhao.,Zhao, Feng.,Filker, Sabine.,Liu, Weiyue.,Zhao, Rongjie.,...&Xu, Kuidong.(2024).Microeukaryotes have unexpected importance in cold seep food webs through predation and parasitism.PROGRESS IN OCEANOGRAPHY,222,13.
MLA Li, Longzhao,et al."Microeukaryotes have unexpected importance in cold seep food webs through predation and parasitism".PROGRESS IN OCEANOGRAPHY 222(2024):13.

入库方式： OAI收割

来源：海洋研究所

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