{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["14"],"submitter":["Rempfert KR"],"pubmed_abstract":["Nitrogen (N) is an essential element for life. N compounds such as ammonium ( NH4+ ) may act as electron donors, while nitrate ( NO3- ) and nitrite ( NO2- ) may serve as electron acceptors to support energy metabolism. However, little is known regarding the availability and forms of N in subsurface ecosystems, particularly in serpentinite-hosted settings where hydrogen (H<sub>2</sub>) generated through water-rock reactions promotes habitable conditions for microbial life. Here, we analyzed N and oxygen (O) isotope composition to investigate the source, abundance, and cycling of N species within the Samail Ophiolite of Oman. The dominant dissolved N species was dependent on the fluid type, with Mg<sup>2+</sup>- HCO3- type fluids comprised mostly of NO3- , and Ca<sup>2+</sup>-OH<sup>-</sup> "],"journal":["Frontiers in microbiology"],"pagination":["1139633"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10160414"],"repository":["biostudies-literature"],"pubmed_title":["Subsurface biogeochemical cycling of nitrogen in the actively serpentinizing Samail Ophiolite, Oman."],"pmcid":["PMC10160414"],"pubmed_authors":["Asamoto CK","Nothaft DB","Rempfert KR","Templeton AS","Evans RD","Matter JM","Kopf SH","Kraus EA","Spear JR"],"additional_accession":[]},"is_claimable":false,"name":"Subsurface biogeochemical cycling of nitrogen in the actively serpentinizing Samail Ophiolite, Oman.","description":"Nitrogen (N) is an essential element for life. N compounds such as ammonium ( NH4+ ) may act as electron donors, while nitrate ( NO3- ) and nitrite ( NO2- ) may serve as electron acceptors to support energy metabolism. However, little is known regarding the availability and forms of N in subsurface ecosystems, particularly in serpentinite-hosted settings where hydrogen (H<sub>2</sub>) generated through water-rock reactions promotes habitable conditions for microbial life. Here, we analyzed N and oxygen (O) isotope composition to investigate the source, abundance, and cycling of N species within the Samail Ophiolite of Oman. The dominant dissolved N species was dependent on the fluid type, with Mg<sup>2+</sup>- HCO3- type fluids comprised mostly of NO3- , and Ca<sup>2+</sup>-OH<sup>-</sup> ","dates":{"release":"2023-01-01T00:00:00Z","publication":"2023","modification":"2025-04-22T05:13:18.715Z","creation":"2025-04-05T21:14:08.456Z"},"accession":"S-EPMC10160414","cross_references":{"pubmed":["37152731"],"doi":["10.3389/fmicb.2023.1139633"]}}