Cargando…

Microbial CH(4) and N(2)O Consumption in Acidic Wetlands

Acidic wetlands are global sources of the atmospheric greenhouse gases methane (CH(4)), and nitrous oxide (N(2)O). Consumption of both atmospheric gases has been observed in various acidic wetlands, but information on the microbial mechanisms underlying these phenomena is scarce. A substantial amoun...

Descripción completa

Detalles Bibliográficos
Autores principales: Kolb, Steffen, Horn, Marcus A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Research Foundation 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3291872/
https://www.ncbi.nlm.nih.gov/pubmed/22403579
http://dx.doi.org/10.3389/fmicb.2012.00078
_version_ 1782225188614569984
author Kolb, Steffen
Horn, Marcus A.
author_facet Kolb, Steffen
Horn, Marcus A.
author_sort Kolb, Steffen
collection PubMed
description Acidic wetlands are global sources of the atmospheric greenhouse gases methane (CH(4)), and nitrous oxide (N(2)O). Consumption of both atmospheric gases has been observed in various acidic wetlands, but information on the microbial mechanisms underlying these phenomena is scarce. A substantial amount of CH(4) is consumed in sub soil by aerobic methanotrophs at anoxic–oxic interfaces (e.g., tissues of Sphagnum mosses, rhizosphere of vascular plant roots). Methylocystis-related species are likely candidates that are involved in the consumption of atmospheric CH(4) in acidic wetlands. Oxygen availability regulates the activity of methanotrophs of acidic wetlands. Other parameters impacting on the methanotroph-mediated CH(4) consumption have not been systematically evaluated. N(2)O is produced and consumed by microbial denitrification, thus rendering acidic wetlands as temporary sources or sinks for N(2)O. Denitrifier communities in such ecosystems are diverse, and largely uncultured and/or new, and environmental factors that control their consumption activity are unresolved. Analyses of the composition of N(2)O reductase genes in acidic wetlands suggest that acid-tolerant Proteobacteria have the potential to mediate N(2)O consumption in such soils. Thus, the fragmented current state of knowledge raises open questions concerning methanotrophs and denitrifiers that consume atmospheric CH(4) and N(2)O in acidic wetlands.
format Online
Article
Text
id pubmed-3291872
institution National Center for Biotechnology Information
language English
publishDate 2012
publisher Frontiers Research Foundation
record_format MEDLINE/PubMed
spelling pubmed-32918722012-03-08 Microbial CH(4) and N(2)O Consumption in Acidic Wetlands Kolb, Steffen Horn, Marcus A. Front Microbiol Microbiology Acidic wetlands are global sources of the atmospheric greenhouse gases methane (CH(4)), and nitrous oxide (N(2)O). Consumption of both atmospheric gases has been observed in various acidic wetlands, but information on the microbial mechanisms underlying these phenomena is scarce. A substantial amount of CH(4) is consumed in sub soil by aerobic methanotrophs at anoxic–oxic interfaces (e.g., tissues of Sphagnum mosses, rhizosphere of vascular plant roots). Methylocystis-related species are likely candidates that are involved in the consumption of atmospheric CH(4) in acidic wetlands. Oxygen availability regulates the activity of methanotrophs of acidic wetlands. Other parameters impacting on the methanotroph-mediated CH(4) consumption have not been systematically evaluated. N(2)O is produced and consumed by microbial denitrification, thus rendering acidic wetlands as temporary sources or sinks for N(2)O. Denitrifier communities in such ecosystems are diverse, and largely uncultured and/or new, and environmental factors that control their consumption activity are unresolved. Analyses of the composition of N(2)O reductase genes in acidic wetlands suggest that acid-tolerant Proteobacteria have the potential to mediate N(2)O consumption in such soils. Thus, the fragmented current state of knowledge raises open questions concerning methanotrophs and denitrifiers that consume atmospheric CH(4) and N(2)O in acidic wetlands. Frontiers Research Foundation 2012-03-02 /pmc/articles/PMC3291872/ /pubmed/22403579 http://dx.doi.org/10.3389/fmicb.2012.00078 Text en Copyright © 2012 Kolb and Horn. http://www.frontiersin.org/licenseagreement This is an open-access article distributed under the terms of the Creative Commons Attribution Non Commercial License, which permits non-commercial use, distribution, and reproduction in other forums, provided the original authors and source are credited.
spellingShingle Microbiology
Kolb, Steffen
Horn, Marcus A.
Microbial CH(4) and N(2)O Consumption in Acidic Wetlands
title Microbial CH(4) and N(2)O Consumption in Acidic Wetlands
title_full Microbial CH(4) and N(2)O Consumption in Acidic Wetlands
title_fullStr Microbial CH(4) and N(2)O Consumption in Acidic Wetlands
title_full_unstemmed Microbial CH(4) and N(2)O Consumption in Acidic Wetlands
title_short Microbial CH(4) and N(2)O Consumption in Acidic Wetlands
title_sort microbial ch(4) and n(2)o consumption in acidic wetlands
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3291872/
https://www.ncbi.nlm.nih.gov/pubmed/22403579
http://dx.doi.org/10.3389/fmicb.2012.00078
work_keys_str_mv AT kolbsteffen microbialch4andn2oconsumptioninacidicwetlands
AT hornmarcusa microbialch4andn2oconsumptioninacidicwetlands