Methanotrophs: Discoveries, Environmental Relevance, and a Perspective on Current and Future Applications

Frontiers in Microbiology, Год журнала: 2021, Номер 12

Опубликована: Май 14, 2021

Methane is the final product of anaerobic decomposition organic matter. The conversion matter to methane (methanogenesis) as a mechanism for energy conservation exclusively attributed archaeal domain. oxidized by methanotrophic microorganisms using oxygen or alternative terminal electron acceptors. Aerobic bacteria belong phyla Proteobacteria and Verrucomicrobia, while oxidation also mediated more recently discovered methanotrophs with representatives in both archaea domains. coupled reduction nitrate, nitrite, iron, manganese, sulfate, acceptors (e.g., humic substances) This review highlights relevance methanotrophy natural anthropogenically influenced ecosystems, emphasizing environmental conditions, distribution, function, co-existence, interactions, availability that likely play key role regulating their function. A systematic overview aspects ecology, physiology, metabolism, genomics crucial understand contribution mitigation efflux atmosphere. We give significance processes under microaerophilic conditions aerobic oxidizers. In context we emphasize current potential future applications from two different angles, namely wastewater treatment through application methanotrophs, biotechnological resource recovery waste streams. Finally, identify knowledge gaps may lead opportunities harness further benefits production valuable bioproducts enabling bio-based circular economy.

Язык: Английский

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Mechanisms of extracellular electron transfer in anaerobic methanotrophic archaea

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Фев. 17, 2024

Abstract Anaerobic methanotrophic (ANME) archaea are environmentally important, uncultivated microorganisms that oxidize the potent greenhouse gas methane. During methane oxidation, ANME engage in extracellular electron transfer (EET) with other microbes, metal oxides, and electrodes through unclear mechanisms. Here, we cultivate ANME-2d ( ‘Ca . Methanoperedens’) bioelectrochemical systems observe strong methane-dependent current (91–93% of total current) associated high enrichment ‘ Ca Methanoperedens’ on anode (up to 82% community), as determined by metagenomics transmission microscopy. Electrochemical metatranscriptomic analyses suggest EET mechanism is similar at various electrode potentials, possible involvement an uncharacterized short-range transport protein complex OmcZ nanowires.

Язык: Английский

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The role of humic substances in mitigating greenhouse gases emissions: Current knowledge and research gaps

The Science of The Total Environment, Год журнала: 2020, Номер 750, С. 141677 - 141677

Опубликована: Авг. 16, 2020

Язык: Английский

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Low-Grade Thermal Energy Harvesting and Self-Powered Sensing Based on Thermogalvanic Hydrogels

Micromachines, Год журнала: 2023, Номер 14(1), С. 155 - 155

Опубликована: Янв. 7, 2023

Thermoelectric cells (TEC) directly convert heat into electricity via the Seebeck effect. Known as one TEC, thermogalvanic hydrogels are promising for harvesting low-grade thermal energy sustainable production. In recent years, research on has increased dramatically due to their capacity continuously with or without consuming material. Until recently, commercial viability of was limited by low power output and difficulty packaging. this review, we summarize advances in electrode materials, redox pairs, polymer network integration approaches, applications hydrogels. Then, highlight key challenges, that is, low-cost preparation, high thermoelectric power, long-time stable operation hydrogels, broader sensing.

Язык: Английский

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Humic substances derived from unconventional resources: extraction, properties, environmental impacts, and prospects

Environmental Science and Pollution Research, Год журнала: 2023, Номер 30(21), С. 59106 - 59127

Опубликована: Апрель 6, 2023

Язык: Английский

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Different microplastics in anaerobic paddy soils: Altering methane emissions by influencing organic matter composition and microbial metabolic pathways

Chemical Engineering Journal, Год журнала: 2023, Номер 469, С. 144003 - 144003

Опубликована: Июнь 7, 2023

Язык: Английский

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Anaerobic oxidation of methane driven by different electron acceptors: A review

The Science of The Total Environment, Год журнала: 2024, Номер 946, С. 174287 - 174287

Опубликована: Июнь 28, 2024

Язык: Английский

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Anaerobic oxidation of methane in landfill and adjacent groundwater environments: Occurrence, mechanisms, and potential applications

Water Research, Год журнала: 2024, Номер 255, С. 121498 - 121498

Опубликована: Март 19, 2024

Язык: Английский

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Exploring simultaneous nitrous oxide and methane sink in wetland sediments under anoxic conditions

Water Research, Год журнала: 2021, Номер 194, С. 116958 - 116958

Опубликована: Фев. 23, 2021

Язык: Английский

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Effect of microbial community structures and metabolite profile on greenhouse gas emissions in rice varieties

Environmental Pollution, Год журнала: 2022, Номер 306, С. 119365 - 119365

Опубликована: Апрель 27, 2022

Язык: Английский

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