Acetylenotrophy: a hidden but ubiquitous microbial metabolism?

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dc.contributor.authorAkob, Denise M.
dc.contributor.authorSutton, John M.
dc.contributor.authorFierst, Janna L.
dc.contributor.authorHaase, Karl B.
dc.contributor.authorBaesman, Shaun
dc.contributor.authorLuther, George W., III
dc.contributor.authorMiller, Laurence G.
dc.contributor.authorOremland, Ronald S.
dc.contributor.otherUnited States Department of the Interior
dc.contributor.otherUnited States Geological Survey
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherUniversity of Delaware
dc.date.accessioned2023-09-29T12:45:21Z
dc.date.available2023-09-29T12:45:21Z
dc.date.issued2018
dc.description.abstractAcetylene (IUPAC name: ethyne) is a colorless, gaseous hydrocarbon, composed of two triple bonded carbon atoms attached to hydrogens (C2H2). When microbiologists and biogeochemists think of acetylene, they immediately think of its use as an inhibitory compound of certain microbial processes and a tracer for nitrogen fixation. However, what is less widely known is that anaerobic and aerobic microorganisms can degrade acetylene, using it as a sole carbon and energy source and providing the basis of a microbial food web. Here, we review what is known about acetylene degrading organisms and introduce the term 'acetylenotrophs' to refer to the microorganisms that carry out this metabolic pathway. In addition, we review the known environmental sources of acetylene and postulate the presence of an hidden acetylene cycle. The abundance of bacteria capable of using acetylene and other alkynes as an energy and carbon source suggests that there are energy cycles present in the environment that are driven by acetylene and alkyne production and consumption that are isolated from atmospheric exchange. Acetylenotrophs may have developed to leverage the relatively high concentrations of acetylene in the pre-Cambrian atmosphere, evolving later to survive in specialized niches where acetylene and other alkynes were produced.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationAkob, D. M., Sutton, J. M., Fierst, J. L., Haase, K. B., Baesman, S., Luther, G. W., III, Miller, L. G., & Oremland, R. S. (2018). Acetylenotrophy: a hidden but ubiquitous microbial metabolism? In FEMS Microbiology Ecology (Vol. 94, Issue 8). Oxford University Press (OUP). https://doi.org/10.1093/femsec/fiy103
dc.identifier.doi10.1093/femsec/fiy103
dc.identifier.orcidhttps://orcid.org/0000-0003-1534-3025
dc.identifier.orcidhttps://orcid.org/0000-0002-0780-885X
dc.identifier.orcidhttps://orcid.org/0000-0002-3639-8829
dc.identifier.orcidhttps://orcid.org/0000-0001-7382-0147
dc.identifier.orcidhttps://orcid.org/0000-0003-0741-8269
dc.identifier.orcidhttps://orcid.org/0000-0003-3559-389X
dc.identifier.urihttps://ir.ua.edu/handle/123456789/12397
dc.languageEnglish
dc.language.isoen_US
dc.publisherOxford University Press
dc.subjectacetylene degraders
dc.subjectacetylenotrophs
dc.subjectacetylene
dc.subjectethyne
dc.subjectNITROUS-OXIDE REDUCTION
dc.subjectSTABLE CARBON-ISOTOPE
dc.subjectNONMETHANE HYDROCARBONS
dc.subjectPELOBACTER-ACETYLENICUS
dc.subjectENZYMATIC UTILIZATION
dc.subjectLIGHT-HYDROCARBONS
dc.subjectVERTICAL PROFILES
dc.subjectPEM-WEST
dc.subjectETHYLENE
dc.subjectMETHANE
dc.subjectMicrobiology
dc.titleAcetylenotrophy: a hidden but ubiquitous microbial metabolism?en_US
dc.typeReview
dc.typetext

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