Pressure‐dependent adaptation strategies implied by the dissimilatory iron reducer <i>Orenia metallireducens</i> Z6

Tolerance of high hydrostatic pressure (HHP) is the hallmark of deep subsurface microorganisms, while its mechanisms remain under-investigated. This study explores HHP adaptation in the piezotolerant bacterium <i>Orenia metallireducens</i> across its near-full pressure range (0.1-40 MPa). At inhibitory pressure (40 MPa), the organism redirected carbon flux toward more favorable energy generation and biosynthesis using ferric mineral as the "electron sink." Furthermore, both universal and pressure-dependent strategies enabled the organism to withstand varying pressures. These findings highlight the role of iron minerals in microbial HHP adaptation and reveal novel survival strategies, advancing our understanding of deep-life evolution and biogeochemical impacts.

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Publication Details

Journal
mLife
Published
2026-02-01
DOI
https://doi.org/10.1002/mlf2.70070
Primary Topic
Microbial Fuel Cells and Bioremediation
Type
article
Field-Weighted Citation Impact
0.00

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article

Pressure‐dependent adaptation strategies implied by the dissimilatory iron reducer Orenia metallireducens Z6

Qin Dong Lin, Zhou Jiang, Yizhou Fan, Jiasong Fang et al.
mLife
Microbial Fuel Cells and Bioremediation
article

Pressure‐dependent adaptation strategies implied by the dissimilatory iron reducer Orenia metallireducens Z6

Qin Dong Lin, Zhou Jiang, Yizhou Fan, Jiasong Fang, Yuntao Hu, Min Liu, Shuyi Li, Qi Feng, Liang Shi, Yuli Wei, Jiahao Pei, Rulong Liu, Yiran Dong, Chenxi Zhang, Xianyu Huang, Guang Yang, Yu He, Hongbo Shao, Robert R. Sanford
article en

Abstract

Tolerance of high hydrostatic pressure (HHP) is the hallmark of deep subsurface microorganisms, while its mechanisms remain under-investigated. This study explores HHP adaptation in the piezotolerant bacterium <i>Orenia metallireducens</i> across its near-full pressure range (0.1-40 MPa). At inhibitory pressure (40 MPa), the organism redirected carbon flux toward more favorable energy generation and biosynthesis using ferric mineral as the "electron sink." Furthermore, both universal and pressure-dependent strategies enabled the organism to withstand varying pressures. These findings highlight the role of iron minerals in microbial HHP adaptation and reveal novel survival strategies, advancing our understanding of deep-life evolution and biogeochemical impacts.

mLifeVol. 5(1)
United States Geological Survey (US), University of Illinois Urbana-Champaign (US), Ministry of Ecology and Environment (CN), China University of Geosciences (CN), Shanghai Genon Biological Products (China) (CN), Shanghai CASB Biotechnology (China) (CN), Illinois Archaeological Survey (US), Shanghai Ocean University (CN), University of South China (CN)
National Natural Science Foundation of China, Shanghai Jiao Tong University, Shanghai Ocean University, Fundamental Research Funds for the Central Universities
Openalex Percentile: Top 57%
Microbial Fuel Cells and Bioremediation
DOIOpen Access PDFOpenAlex
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