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Nitric-oxide-driven oxygen release in anoxic . | LitMetric

AI Article Synopsis

  • Research showed that when NO was added to anoxic conditions, it resulted in oxygen release, although no genetic markers for NO dismutases were found.
  • This process could help organisms adapt to low oxygen environments and suggests that oxygen generation from NO dismutation is more common than previously thought, potentially reducing the release of nitrous oxide, a greenhouse gas.

Article Abstract

Denitrification supports anoxic growth of in infections. Moreover, denitrification may provide oxygen (O) resulting from dismutation of the denitrification intermediate nitric oxide (NO) as seen in . To examine the prevalence of NO dismutation we studied O release by in airtight vials. rapidly depleted O but NO supplementation generated peaks of O at the onset of anoxia, and we demonstrate a direct role of NO in the O release. However, we were not able to detect genetic evidence for putative NO dismutases. The supply of endogenous O at the onset of anoxia could play an adaptive role when enters anaerobiosis. Furthermore, O generation by NO dismutation may be more widespread than indicated by the reports on the distribution of homologues genes. In general, NO dismutation may allow removal of nitrate by denitrification without release of the very potent greenhouse gas, nitrous oxide.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8608891PMC
http://dx.doi.org/10.1016/j.isci.2021.103404DOI Listing

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