Elevated hydrostatic pressure enhances the potential for microbially mediated carbon sequestration at the sediment–water interface in a deep-water reservoir by modulating functional genes and metabolic pathways

静水压力 固碳 沉积物 二氧化碳 环境科学 生物 生态学 地质学 地貌学 物理 热力学
作者
Yumei Li,Lixin He,Ying Pan,Kai Chen,Tianyu Zhuo,Kehong Yu,Jinnan Zhang,Shilei Zhou,Xiaohui Lei,Beibei Chai
标识
DOI:10.1007/s44246-024-00104-5
摘要

Abstract Microbially mediated carbon cycling is essential for the production of refractory dissolved organic carbon and subsequent formation of stable carbon sinks at the sediment–water interface (SWI) in aquatic ecosystems, such as lakes. It remains unclear how this process is influenced by hydrostatic pressure changes due to water level fluctuation in deep-water reservoirs. Here, a microcosm simulation experiment was carried out to decipher the response of microbially mediated carbon cycling to various hydrostatic pressures (i.e., 0.1 MPa [atmospheric pressure], 0.2 MPa, 0.5 MPa, 0.7 MPa) at the SWI in Jinpen Reservoir, Shaanxi Province, China. The response mechanisms of microbial community structure, functional gene abundance, and metabolic pathway activity associated with carbon cycling were explored by metagenomics and metabolomics. Results showed that the number of microbial species in sediment samples increased with elevating pressure. The relative abundance of archaea also increased from 0.2% to 0.4% as a consequence of pressure elevation, accompanied by 0.17% and 0.03% decrease in bacteria and fungi, respectively. In contrast with low pressures, high pressures allowed the microbial communities to form a more closely connected network, which maintained more complex interspecies interactions and greater system stability. High pressures additionally improved the abundances of specific functional genes (e.g., ALDO , ACO , sdhA , and sdhC ) in carbon metabolic pathways, promoted carbon fixation by the reductive pentose phosphate (Calvin) and citrate cycles, and hindered methanogenesis. Piezophilic taxa (e.g., Gammaproteobacteria, Alphaproteobacteria, Bacteroidetes ) and genes (e.g., ompH , asd ) were identified among carbon cycling-associated microbial communities. The piezophilic genes, which were mainly present in the Proteobacteria phylum, increased first and then decreased in abundance with elevating pressure. The findings indicate that elevated hydrostatic pressure contributes to carbon sequestration at the SWI in deep-water reservoirs by changing carbon cycling-associated microbial species, as well as relevant functional genes and metabolic pathways. Graphical Abstract
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
cdragon完成签到,获得积分10
1秒前
TX发布了新的文献求助10
1秒前
李某月发布了新的文献求助10
1秒前
大大大漂亮完成签到 ,获得积分10
1秒前
1秒前
小白研发布了新的文献求助10
1秒前
yhy完成签到,获得积分10
2秒前
君莫笑完成签到,获得积分10
2秒前
3秒前
Jolene完成签到 ,获得积分10
3秒前
吾系渣渣辉完成签到 ,获得积分10
3秒前
yang完成签到,获得积分10
3秒前
共享精神应助Camellia采纳,获得10
5秒前
夏夜完成签到 ,获得积分10
5秒前
子卿发布了新的文献求助10
5秒前
sci来完成签到,获得积分10
5秒前
zkai完成签到,获得积分10
5秒前
机智的皮皮虾完成签到,获得积分10
5秒前
6秒前
研友_851KE8发布了新的文献求助10
6秒前
6秒前
二大爷发布了新的文献求助10
7秒前
Tony完成签到,获得积分10
7秒前
大气的玉米完成签到,获得积分10
7秒前
siyan156完成签到,获得积分10
7秒前
8秒前
又又完成签到 ,获得积分10
8秒前
地方吧发布了新的文献求助10
8秒前
大个应助SInyi采纳,获得10
8秒前
越野发布了新的文献求助30
8秒前
共享精神应助Yanan采纳,获得10
8秒前
香蕉静芙完成签到,获得积分10
9秒前
ztl17523发布了新的文献求助10
9秒前
生而追梦不止完成签到 ,获得积分10
9秒前
9秒前
混沌完成签到,获得积分10
9秒前
10秒前
10秒前
oxear完成签到,获得积分10
10秒前
哈雷彗星完成签到,获得积分10
10秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
Immigrant Incorporation in East Asian Democracies 600
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3968771
求助须知:如何正确求助?哪些是违规求助? 3513729
关于积分的说明 11169450
捐赠科研通 3249084
什么是DOI,文献DOI怎么找? 1794592
邀请新用户注册赠送积分活动 875258
科研通“疑难数据库(出版商)”最低求助积分说明 804740