Light‐stimulated production of dissolved DMSO by a particle‐associated process in the Ross Sea, Antarctica
Dimethylsulfoxide (DMSO) is an abundant form of methylated sulfur in marine systems and it is known to be produced from dimethylsulfide (DMS). Using radiolabeled 35S‐DMS and gas chromatography techniques, we quantified the dissolved DMSO (DMSOd) produced from photo‐ and biological oxidation of disso...
Published in: | Limnology and Oceanography |
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crwiley:10.4319/lo.2007.52.6.2456 2024-04-07T07:48:13+00:00 Light‐stimulated production of dissolved DMSO by a particle‐associated process in the Ross Sea, Antarctica del Valle, Daniela A. Kieber, David J. John, Bisgrove Kiene, Ronald P. 2007 http://dx.doi.org/10.4319/lo.2007.52.6.2456 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2007.52.6.2456 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2007.52.6.2456 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 52, issue 6, page 2456-2466 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 2007 crwiley https://doi.org/10.4319/lo.2007.52.6.2456 2024-03-08T03:54:19Z Dimethylsulfoxide (DMSO) is an abundant form of methylated sulfur in marine systems and it is known to be produced from dimethylsulfide (DMS). Using radiolabeled 35S‐DMS and gas chromatography techniques, we quantified the dissolved DMSO (DMSOd) produced from photo‐ and biological oxidation of dissolved DMS and compared the DMSOd production from these pathways with the net change in DMSOd concentrations in unfiltered seawater samples. The net change in DMSOd in light‐exposed treatments exceeded DMSOd production from photo‐ plus biological oxidation of dissolved DMS. This indicated that DMSOd was produced by one or more light‐driven processes likely associated with particulate material. Results from in situ incubation arrays showed that the relative importance of DMSOd production processes was dependent on irradiation depth, with the unidentified particle‐associated process and dissolved DMS photooxidation the main DMSOd sources close to the surface (0–10 m) and biological oxidation of dissolved DMS the main process at depths at which the light level was low (>10 m). Deckboard and in situ incubations revealed that DMSOd production from the particle‐associated process was stimulated by ultraviolet radiation. Higher particle‐associated production of DMSOd in samples more prone to suffer light‐induced stress supports the hypothesis that this process was related to phytoplanktonic biosynthesis and release of DMSO because of oxidative stress. Our results suggest that particle‐associated DMSOd production is an important source of DMSOd in surface waters of the Ross Sea and also help to explain why DMSOd is periodically the main organosulfur compound detected in the upper water column. Article in Journal/Newspaper Antarc* Antarctica Ross Sea Wiley Online Library Ross Sea Limnology and Oceanography 52 6 2456 2466 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Oceanography |
spellingShingle |
Aquatic Science Oceanography del Valle, Daniela A. Kieber, David J. John, Bisgrove Kiene, Ronald P. Light‐stimulated production of dissolved DMSO by a particle‐associated process in the Ross Sea, Antarctica |
topic_facet |
Aquatic Science Oceanography |
description |
Dimethylsulfoxide (DMSO) is an abundant form of methylated sulfur in marine systems and it is known to be produced from dimethylsulfide (DMS). Using radiolabeled 35S‐DMS and gas chromatography techniques, we quantified the dissolved DMSO (DMSOd) produced from photo‐ and biological oxidation of dissolved DMS and compared the DMSOd production from these pathways with the net change in DMSOd concentrations in unfiltered seawater samples. The net change in DMSOd in light‐exposed treatments exceeded DMSOd production from photo‐ plus biological oxidation of dissolved DMS. This indicated that DMSOd was produced by one or more light‐driven processes likely associated with particulate material. Results from in situ incubation arrays showed that the relative importance of DMSOd production processes was dependent on irradiation depth, with the unidentified particle‐associated process and dissolved DMS photooxidation the main DMSOd sources close to the surface (0–10 m) and biological oxidation of dissolved DMS the main process at depths at which the light level was low (>10 m). Deckboard and in situ incubations revealed that DMSOd production from the particle‐associated process was stimulated by ultraviolet radiation. Higher particle‐associated production of DMSOd in samples more prone to suffer light‐induced stress supports the hypothesis that this process was related to phytoplanktonic biosynthesis and release of DMSO because of oxidative stress. Our results suggest that particle‐associated DMSOd production is an important source of DMSOd in surface waters of the Ross Sea and also help to explain why DMSOd is periodically the main organosulfur compound detected in the upper water column. |
format |
Article in Journal/Newspaper |
author |
del Valle, Daniela A. Kieber, David J. John, Bisgrove Kiene, Ronald P. |
author_facet |
del Valle, Daniela A. Kieber, David J. John, Bisgrove Kiene, Ronald P. |
author_sort |
del Valle, Daniela A. |
title |
Light‐stimulated production of dissolved DMSO by a particle‐associated process in the Ross Sea, Antarctica |
title_short |
Light‐stimulated production of dissolved DMSO by a particle‐associated process in the Ross Sea, Antarctica |
title_full |
Light‐stimulated production of dissolved DMSO by a particle‐associated process in the Ross Sea, Antarctica |
title_fullStr |
Light‐stimulated production of dissolved DMSO by a particle‐associated process in the Ross Sea, Antarctica |
title_full_unstemmed |
Light‐stimulated production of dissolved DMSO by a particle‐associated process in the Ross Sea, Antarctica |
title_sort |
light‐stimulated production of dissolved dmso by a particle‐associated process in the ross sea, antarctica |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.4319/lo.2007.52.6.2456 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.2007.52.6.2456 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.2007.52.6.2456 |
geographic |
Ross Sea |
geographic_facet |
Ross Sea |
genre |
Antarc* Antarctica Ross Sea |
genre_facet |
Antarc* Antarctica Ross Sea |
op_source |
Limnology and Oceanography volume 52, issue 6, page 2456-2466 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.2007.52.6.2456 |
container_title |
Limnology and Oceanography |
container_volume |
52 |
container_issue |
6 |
container_start_page |
2456 |
op_container_end_page |
2466 |
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1795662138679754752 |