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High hydrostatic pressure stimulates microbial nitrate reduction in hadal trench sediments under oxic conditions

文献类型：期刊论文

作者Yang, Na5,6,7; Lv, Yongxin5,6,7; Ji, Mukan4; Wu, Shiguo3; Zhang, Yu1,2,5,6,7
刊名NATURE COMMUNICATIONS
出版日期2024-03-19
卷号15期号:1页码:12
DOI10.1038/s41467-024-46897-2
英文摘要Hadal trenches are extreme environments situated over 6000 m below sea surface, where enormous hydrostatic pressure affects the biochemical cycling of elements. Recent studies have indicated that hadal trenches may represent a previously overlooked source of fixed nitrogen loss; however, the mechanisms and role of hydrostatic pressure in this process are still being debated. To this end, we investigate the effects of hydrostatic pressure (0.1 to 115 MPa) on the chemical profile, microbial community structure and functions of surface sediments from the Mariana Trench using a Deep Ocean Experimental Simulator supplied with nitrate and oxygen. We observe enhanced denitrification activity at high hydrostatic pressure under oxic conditions, while the anaerobic ammonium oxidation - a previously recognized dominant nitrogen loss pathway - is not detected. Additionally, we further confirm the simultaneous occurrence of nitrate reduction and aerobic respiration using a metatranscriptomic dataset from in situ RNA-fixed sediments in the Mariana Trench. Taken together, our findings demonstrate that hydrostatic pressure can influence microbial contributions to nitrogen cycling and that the hadal trenches are a potential nitrogen loss hotspot. Knowledge of the influence of hydrostatic pressure on anaerobic processes in oxygenated surface sediments can greatly broaden our understanding of element cycling in hadal trenches. Hadal trenches are the deepest oceanic ecosystems, with water depth over 6000 m, and are among the least explored habitats on Earth. This research demonstrates that high hydrostatic pressure enhances denitrification activity under oxic conditions, potentially making hadal trenches fixed nitrogen loss hotpots.
WOS关键词ORGANIC-MATTER ; DENITRIFICATION ; ANAMMOX ; COMMUNITY ; GENOME ; FUTURE ; CLASSIFICATION ; ENVIRONMENTS ; COVERAGE ; TOOLS
资助项目National Natural Science Foundation of China (National Science Foundation of China)[92251303] ; National Natural Science Foundation of China (National Science Foundation of China)[42122043] ; National Natural Science Foundation of China (National Science Foundation of China)[42188102] ; National Natural Science Foundation of China (National Science Foundation of China)[91951117] ; National Natural Science Foundation of China[21TQ1400201] ; Shanghai Pilot Program for Basic Research-Shanghai Jiao Tong University[2023YFC2812800] ; National Key Research and Development Program of China
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:001187872900006
出版者NATURE PORTFOLIO
资助机构National Natural Science Foundation of China (National Science Foundation of China) ; National Natural Science Foundation of China ; Shanghai Pilot Program for Basic Research-Shanghai Jiao Tong University ; National Key Research and Development Program of China
源URL[http://ir.idsse.ac.cn/handle/183446/10977]  
专题深海科学研究部_深海地球物理与资源研究室
通讯作者Zhang, Yu
作者单位1.Shanghai Jiao Tong Univ, Yazhou Bay Inst Deepsea Sci Tech, Sanya, Peoples R China
2.Minist Nat Resources, Polar Res Inst China, Lab Polar Sci, Shanghai, Peoples R China
3.Chinese Acad Sci, Inst Deep sea Sci & Engn, Sanya, Peoples R China
4.Lanzhou Univ, Ctr Pan 3 Pole Environm, Lanzhou, Peoples R China
5.Shanghai Jiao Tong Univ, MOE Key Lab Polar Ecosyst & Climate Change, Shanghai, Peoples R China
6.Shanghai Jiao Tong Univ, Shanghai Key Lab Polar Life & Environm Sci, Shanghai, Peoples R China
7.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Na,Lv, Yongxin,Ji, Mukan,et al. High hydrostatic pressure stimulates microbial nitrate reduction in hadal trench sediments under oxic conditions[J]. NATURE COMMUNICATIONS,2024,15(1):12.
APA Yang, Na,Lv, Yongxin,Ji, Mukan,Wu, Shiguo,&Zhang, Yu.(2024).High hydrostatic pressure stimulates microbial nitrate reduction in hadal trench sediments under oxic conditions.NATURE COMMUNICATIONS,15(1),12.
MLA Yang, Na,et al."High hydrostatic pressure stimulates microbial nitrate reduction in hadal trench sediments under oxic conditions".NATURE COMMUNICATIONS 15.1(2024):12.

入库方式： OAI收割

来源：深海科学与工程研究所

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