Thermodynamically favorable reactions shape the archaeal community affecting bacterial community assembly in oil reservoirs

Zhao, Jie-Yu, Hu, Bing, Dolfing, Jan, Li, Yan, Tang, Yue-Qin, Jiang, Yiming, Chi, Chang-Qiao, Xing, Jianmin, Nie, Yong and Wu, Xiao-Lei (2021) Thermodynamically favorable reactions shape the archaeal community affecting bacterial community assembly in oil reservoirs. Science of the Total Environment, 781. p. 146506. ISSN 0048-9697

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Official URL: https://doi.org/10.1016/j.scitotenv.2021.146506

Abstract

Microbial community assembly mechanisms are pivotal for understanding the ecological functions of microorganisms in biogeochemical cycling in Earth’s ecosystems, yet rarely investigated in the context of deep terrestrial ecology. Here, the microbial communities in the production waters collected from water injection wells and oil production wells across eight oil reservoirs throughout northern China were determined and analyzed by proportional distribution analysis and null model analysis. A ‘core’ microbiota consisting of three bacterial genera, including Arcobacter, Pseudomonas and Acinetobacter, and eight archaeal genera, including Archaeoglobus, Methanobacterium, Methanothermobacter, unclassified Methanobacteriaceae, Methanomethylovorans, Methanoculleus, Methanosaeta and Methanolinea, was found to be present in all production water samples. Canonical correlation analysis reflected that the core archaea were significantly influenced by temperature and reservoir depth, while the core bacteria were affected by the combined impact of the core archaea and environmental factors. Thermodynamic calculations indicate that bioenergetic constraints are the driving force that governs the enrichment of two core archaeal guilds, aceticlastic methanogens versus hydrogenotrophic methanogens, in low- and high-temperature oil reservoirs, respectively. Collectively, our study indicates that microbial community structures in wells of oil reservoirs are structured by the thermodynamic window of opportunity, through which the core archaeal communities are accommodated directly followed by the deterministic recruiting of core bacterial genera, and then the stochastic selection of some other microbial members from local environments. Our study enhances the understanding of the microbial assembly mechanism in deep terrestrial habitats. Meanwhile, our findings will support the development of functional microbiota used for bioremediation and bioaugmentation in microbial enhanced oil recovery.

Item Type: Article
Additional Information: Funding information: The study was supported by the National Key R&D Program of China (2018YFA0902100 and 2018YFA0902103 to XLW), the National Natural Science Foundation of China (31770120 to XLW), and Open Funding Project of the State Key Laboratory of Biochemical Engineering (No. 2020KF-05).
Uncontrolled Keywords: Microbial community assembly, oil reservoirs, thermodynamic constraint, core archaea, microbiome
Subjects: C700 Molecular Biology, Biophysics and Biochemistry
F800 Physical and Terrestrial Geographical and Environmental Sciences
H700 Production and Manufacturing Engineering
H800 Chemical, Process and Energy Engineering
K900 Others in Architecture, Building and Planning
Department: Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User: Elena Carlaw
Date Deposited: 19 Mar 2021 15:13
Last Modified: 29 Apr 2021 13:45
URI: http://nrl.northumbria.ac.uk/id/eprint/45745

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