ArticleScientific reports2019
Aerobic methane oxidation under copper scarcity in a stratified lake.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Persistent activity of aerobic methane-oxidizing bacteria in anoxic lake waters due to metabolic versatility.Nature communications · 2024Article
- Copper mobilisation from Cu sulphide minerals by methanobactin: Effect of pH, oxygen and natural organic matter.Geobiology · 2022Article
- Rainforest-to-pasture conversion stimulates soil methanogenesis across the Brazilian Amazon.The ISME journal · 2021Article
- Effects of oxygen tension on the microbial community and functional gene expression of aerobic methane oxidation coupled to denitrification systems.Environmental science and pollution research international · 2020Article
- Environmental and Microbial Interactions Shape Methane-Oxidizing Bacterial Communities in a Stratified Lake.Frontiers in microbiology · 2020Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aerobic methane-oxidizing bacteria (MOB) substantially reduce methane fluxes from freshwater sediments to the atmosphere. Their metalloenzyme methane monooxygenase (MMO) catalyses the first oxidation step converting methane to methanol. Its most prevalent form is the copper-dependent particulate pMMO, however, some MOB are also able to express the iron-containing, soluble sMMO under conditions of copper scarcity. So far, the link between copper availability in different forms and biological methane consumption in freshwater systems is poorly understood. Here, we present high-resolution profiles of MOB abundance and pMMO and sMMO functional genes in relation to copper, methane and oxygen profiles across the oxic-anoxic boundary of a stratified lake. We show that even at low nanomolar copper concentrations, MOB species containing the gene for pMMO expression are present at high abundance. The findings highlight the importance of copper as a micronutrient for MOB species and the potential usage of copper acquisition strategies, even under conditions of abundant iron, and shed light on the spatial distribution of these microorganisms.
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Registered trials
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