Abiotic nitrous oxide production from sediments and brine of Don Juan Pond, Wright Valley Antarctica, at Mars analog temperatures (–40°C)
The presence of biogenic gases such as oxygen, methane, and nitrous oxide (N2O) in the atmospheres of extraterrestrial bodies have been postulated as biosignatures of life. Abiotic N2O production was recently documented in Don Juan Pond, Antarctica, a cold, hypersaline Mars analog environment. Here...
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ftdatacite:10.24433/co.6151632.v1 2023-05-15T13:54:30+02:00 Abiotic nitrous oxide production from sediments and brine of Don Juan Pond, Wright Valley Antarctica, at Mars analog temperatures (–40°C) Schutte, Charles A. Samarkin, Vladimir A. Peters, Brian Madigan, Michael T. Casciotti, Karen L. Joye, Samantha B. 2022 https://dx.doi.org/10.24433/co.6151632.v1 https://codeocean.com/capsule/2266873/tree/v1 en eng Code Ocean No Rights Reserved (CC0) MIT License https://opensource.org/licenses/MIT mit https://creativecommons.org/share-your-work/public-domain/cc0/ CC0 Capsule Earth Sciences Antarctica Mars extreme environment exobiology nitrous oxide biosignatures Capsule article Software SoftwareSourceCode 2022 ftdatacite https://doi.org/10.24433/co.6151632.v1 2022-02-09T11:45:29Z The presence of biogenic gases such as oxygen, methane, and nitrous oxide (N2O) in the atmospheres of extraterrestrial bodies have been postulated as biosignatures of life. Abiotic N2O production was recently documented in Don Juan Pond, Antarctica, a cold, hypersaline Mars analog environment. Here we quantify the temperature-driven kinetics of abiotic N2O production and combine this with stable isotope labeling to demonstrate that N2O is produced from Don Juan Pond sediment and brine at Mars-analog temperatures down to at least –40°C. Further, we show that at any given temperature, N2O production is controlled by the availability of reduced Fe-bearing minerals rather than nitrate. We conclude that abiotic N2O production is possible on Mars and other extraterrestrial bodies and exoplanets; thus, the presence of atmospheric N2O on these bodies should not be taken by itself as an indicator of microbial life. Article in Journal/Newspaper Antarc* Antarctica DataCite Metadata Store (German National Library of Science and Technology) Don Juan Pond ENVELOPE(161.183,161.183,-77.567,-77.567) Wright Valley ENVELOPE(161.833,161.833,-77.517,-77.517) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Capsule Earth Sciences Antarctica Mars extreme environment exobiology nitrous oxide biosignatures |
spellingShingle |
Capsule Earth Sciences Antarctica Mars extreme environment exobiology nitrous oxide biosignatures Schutte, Charles A. Samarkin, Vladimir A. Peters, Brian Madigan, Michael T. Casciotti, Karen L. Joye, Samantha B. Abiotic nitrous oxide production from sediments and brine of Don Juan Pond, Wright Valley Antarctica, at Mars analog temperatures (–40°C) |
topic_facet |
Capsule Earth Sciences Antarctica Mars extreme environment exobiology nitrous oxide biosignatures |
description |
The presence of biogenic gases such as oxygen, methane, and nitrous oxide (N2O) in the atmospheres of extraterrestrial bodies have been postulated as biosignatures of life. Abiotic N2O production was recently documented in Don Juan Pond, Antarctica, a cold, hypersaline Mars analog environment. Here we quantify the temperature-driven kinetics of abiotic N2O production and combine this with stable isotope labeling to demonstrate that N2O is produced from Don Juan Pond sediment and brine at Mars-analog temperatures down to at least –40°C. Further, we show that at any given temperature, N2O production is controlled by the availability of reduced Fe-bearing minerals rather than nitrate. We conclude that abiotic N2O production is possible on Mars and other extraterrestrial bodies and exoplanets; thus, the presence of atmospheric N2O on these bodies should not be taken by itself as an indicator of microbial life. |
format |
Article in Journal/Newspaper |
author |
Schutte, Charles A. Samarkin, Vladimir A. Peters, Brian Madigan, Michael T. Casciotti, Karen L. Joye, Samantha B. |
author_facet |
Schutte, Charles A. Samarkin, Vladimir A. Peters, Brian Madigan, Michael T. Casciotti, Karen L. Joye, Samantha B. |
author_sort |
Schutte, Charles A. |
title |
Abiotic nitrous oxide production from sediments and brine of Don Juan Pond, Wright Valley Antarctica, at Mars analog temperatures (–40°C) |
title_short |
Abiotic nitrous oxide production from sediments and brine of Don Juan Pond, Wright Valley Antarctica, at Mars analog temperatures (–40°C) |
title_full |
Abiotic nitrous oxide production from sediments and brine of Don Juan Pond, Wright Valley Antarctica, at Mars analog temperatures (–40°C) |
title_fullStr |
Abiotic nitrous oxide production from sediments and brine of Don Juan Pond, Wright Valley Antarctica, at Mars analog temperatures (–40°C) |
title_full_unstemmed |
Abiotic nitrous oxide production from sediments and brine of Don Juan Pond, Wright Valley Antarctica, at Mars analog temperatures (–40°C) |
title_sort |
abiotic nitrous oxide production from sediments and brine of don juan pond, wright valley antarctica, at mars analog temperatures (–40°c) |
publisher |
Code Ocean |
publishDate |
2022 |
url |
https://dx.doi.org/10.24433/co.6151632.v1 https://codeocean.com/capsule/2266873/tree/v1 |
long_lat |
ENVELOPE(161.183,161.183,-77.567,-77.567) ENVELOPE(161.833,161.833,-77.517,-77.517) |
geographic |
Don Juan Pond Wright Valley |
geographic_facet |
Don Juan Pond Wright Valley |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_rights |
No Rights Reserved (CC0) MIT License https://opensource.org/licenses/MIT mit https://creativecommons.org/share-your-work/public-domain/cc0/ |
op_rightsnorm |
CC0 |
op_doi |
https://doi.org/10.24433/co.6151632.v1 |
_version_ |
1766260434723143680 |