Ecological distribution and metabolic potential of Marine Group II archaea in the Eastern Indian Ocean: Evidence for heterotrophic carbon fixation
文献类型：期刊论文
| 作者 | Dai, Jinlong2; Zhang, Yixue2; Ye, Qi2; Wu, Ying2; Zhang, Wuchang1; Zhang, Jing2 |
| 刊名 | MARINE ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2025-10-01 |
| 卷号 | 211页码:10 |
| 关键词 | Planktonic archaea Marine Group II (MGII) Microbial carbon pump Metagenome Eastern Indian ocean |
| ISSN号 | 0141-1136 |
| DOI | 10.1016/j.marenvres.2025.107446 |
| 通讯作者 | Ye, Qi(qye@sklec.ecnu.edu.cn) ; Wu, Ying(wuying@sklec.ecnu.edu.cn) |
| 英文摘要 | Marine Group II (MGII) archaea are globally distributed in oceanic waters, yet their ecological functions and metabolic potentials remain elusive due to the lack of pure culture. Here, we investigate the diversity, distribution, and metabolic potential of MGII archaea in the Eastern Indian Ocean using high-throughput sequencing and metagenomic analyses. We identified 37 MGII operational taxonomic units(OTUs), with surface and deep chlorophyll maximum (DCM) layers dominated by clade O1, O3, and P, and deeper waters by O4 and H, reflecting depth-specific ecological niches shaped by environmental gradients. Metagenomic reconstruction yielded 29 archaeal metagenome-assembled genomes (MAGs), including two novel MGII genomes within the Poseidoniaceae and Thalassarchaeaceae families. Metagenomic analysis further revealed previously uncharacterized pathways in MGII, including heterotrophic inorganic carbon fixation via anaplerotic pathways. Notably, the clade N1, prevalent in the DCM, shows strong potential for inorganic carbon assimilation, implicating MGII archaea in the microbial carbon pump and CO2 sequestration. Our results underscore the critical, yet underappreciated, role of MGII archaea in marine biogeochemical cycles and global carbon sink, emphasizing their contribution to CO2 sequestration in oligotrophic marine environments. |
| WOS关键词 | DISSOLVED ORGANIC-MATTER ; DARK ; GENOMES |
| 资助项目 | National Natural Science Foundation of China (NSFC)[42230402] ; NSFC Open Research Cruise[NORC2020-10] ; NSFC Shiptime Project[41949910] |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:001585459200003 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/203536]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 通讯作者 | Ye, Qi; Wu, Ying |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200241, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dai, Jinlong,Zhang, Yixue,Ye, Qi,et al. Ecological distribution and metabolic potential of Marine Group II archaea in the Eastern Indian Ocean: Evidence for heterotrophic carbon fixation[J]. MARINE ENVIRONMENTAL RESEARCH,2025,211:10. |
| APA | Dai, Jinlong,Zhang, Yixue,Ye, Qi,Wu, Ying,Zhang, Wuchang,&Zhang, Jing.(2025).Ecological distribution and metabolic potential of Marine Group II archaea in the Eastern Indian Ocean: Evidence for heterotrophic carbon fixation.MARINE ENVIRONMENTAL RESEARCH,211,10. |
| MLA | Dai, Jinlong,et al."Ecological distribution and metabolic potential of Marine Group II archaea in the Eastern Indian Ocean: Evidence for heterotrophic carbon fixation".MARINE ENVIRONMENTAL RESEARCH 211(2025):10. |
入库方式： OAI收割
来源：海洋研究所
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