ArticleFrontiers in microbiology2015
Diverse electron sources support denitrification under hypoxia in the obligate methanotroph Methylomicrobium album strain BG8.
Article in Frontiers in microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.
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40 citing papers in PubMed, 116 citations in OpenAlex.
- Isolation of Allocrenothrix methanica reveals distinct ecophysiologies of filamentous methanotrophs and adaptations to O2 limitation.The ISME journal · 2026Article
- Diverse bacteriohemerythrin genes ofmBio · 2025Article
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- Community Structure and Function of Aerobic Methanotrophs in Urban River Sediments: A Case Study of the Jialing River.Environmental microbiology reports · 2025Article
- Anaerobic methane oxidation coupled with denitrification mitigates soil nitrous oxide emissions.Science advances · 2025Article
- Microbial oxidation of short-chain gaseous alkanes.Nature microbiology · 2025Review
- Coal mining activities driving the changes in bacterial community.Scientific reports · 2024Article
- Treatment of Anaerobic Digester Liquids via Membrane Biofilm Reactors: Simultaneous Aerobic Methanotrophy and Nitrogen Removal.Microorganisms · 2024Article
- Survival strategies of aerobic methanotrophs under hypoxia in methanogenic lake sediments.Environmental microbiome · 2024Article
- Persistent activity of aerobic methane-oxidizing bacteria in anoxic lake waters due to metabolic versatility.Nature communications · 2024Article
- Nitrous oxide respiration in acidophilic methanotrophs.Nature communications · 2024Article
- Article
- Selective single-bacteria extraction based on capture and release of microemulsion droplets.Scientific reports · 2022Article
- RNA Biomarker Trends across Type I and Type II Aerobic Methanotrophs in Response to Methane Oxidation Rates and Transcriptome Response to Short-Term Methane and Oxygen Limitation in Methylomicrobium album BG8.Microbiology spectrum · 2022Article
- Article
- Multiple Groups of Methanotrophic Bacteria Mediate Methane Oxidation in Anoxic Lake Sediments.Frontiers in microbiology · 2022Article
- Methane-dependent selenate reduction by a bacterial consortium.The ISME journal · 2021Article
- Verrucomicrobial methanotrophs grow on diverse C3 compounds and use a homolog of particulate methane monooxygenase to oxidize acetone.The ISME journal · 2021Article
- Disproportionate CHMicroorganisms · 2021Article
- Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aerobic methane-oxidizing bacteria (MOB) are a diverse group of microorganisms that are ubiquitous in natural environments. Along with anaerobic MOB and archaea, aerobic methanotrophs are critical for attenuating emission of methane to the atmosphere. Clearly, nitrogen availability in the form of ammonium and nitrite have strong effects on methanotrophic activity and their natural community structures. Previous findings show that nitrite amendment inhibits the activity of some cultivated methanotrophs; however, the physiological pathways that allow some strains to transform nitrite, expression of gene inventories, as well as the electron sources that support this activity remain largely uncharacterized. Here we show that Methylomicrobium album strain BG8 utilizes methane, methanol, formaldehyde, formate, ethane, ethanol, and ammonia to support denitrification activity under hypoxia only in the presence of nitrite. We also demonstrate that transcript abundance of putative denitrification genes, nirS and one of two norB genes, increased in response to nitrite. Furthermore, we found that transcript abundance of pxmA, encoding the alpha subunit of a putative copper-containing monooxygenase, increased in response to both nitrite and hypoxia. Our results suggest that expression of denitrification genes, found widely within genomes of aerobic methanotrophs, allow the coupling of substrate oxidation to the reduction of nitrogen oxide terminal electron acceptors under oxygen limitation. The present study expands current knowledge of the metabolic flexibility of methanotrophs by revealing that a diverse array of electron donors support nitrite reduction to nitrous oxide under hypoxia.
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