학술논문
Oxic methane production from methylphosphonate in a large oligotrophic lake: limitation by substrate and organic carbon supply.
Document Type
Academic Journal
Author
Peoples LM; Flathead Lake Biological Station, University of Montana, Polson, Montana, USA.; Dore JE; Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, Montana, USA.; Bilbrey EM; Flathead Lake Biological Station, University of Montana, Polson, Montana, USA.; Department of Biological Sciences, Idaho State University, Pocatello, Idaho, USA.; Vick-Majors TJ; Flathead Lake Biological Station, University of Montana, Polson, Montana, USA.; Department of Biological Sciences, Michigan Technological University, Houghton, Michigan, USA.; Ranieri JR; Flathead Lake Biological Station, University of Montana, Polson, Montana, USA.; Evans KA; Flathead Lake Biological Station, University of Montana, Polson, Montana, USA.; Ross AM; Flathead Lake Biological Station, University of Montana, Polson, Montana, USA.; Devlin SP; Flathead Lake Biological Station, University of Montana, Polson, Montana, USA.; Church MJ; Flathead Lake Biological Station, University of Montana, Polson, Montana, USA.
Source
Publisher: American Society for Microbiology Country of Publication: United States NLM ID: 7605801 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1098-5336 (Electronic) Linking ISSN: 00992240 NLM ISO Abbreviation: Appl Environ Microbiol Subsets: MEDLINE
Subject
Language
English
Abstract
Importance: Methane is an important greenhouse gas that is typically produced under anoxic conditions. We show that methane is supersaturated in a large oligotrophic lake despite the presence of oxygen. Metagenomic sequencing indicates that diverse, widespread microorganisms may contribute to the oxic production of methane through the cleavage of methylphosphonate. We experimentally demonstrate that these organisms, especially members of the genus Acidovorax , can produce methane through this process. However, appreciable rates of methane production only occurred when both methylphosphonate and labile sources of carbon were added, indicating that this process may be limited to specific niches and may not be completely responsible for methane concentrations in Flathead Lake. This work adds to our understanding of methane dynamics by describing the organisms and the rates at which they can produce methane through an oxic pathway in a representative oligotrophic lake.
Competing Interests: The authors declare no conflict of interest.
Competing Interests: The authors declare no conflict of interest.