Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus
Sea ice is an extreme environment known to host microbial communities which produce high concentrations of the metabolites dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO). These two compounds are involved in the cycling of the climate-cooling gas dimethylsulfide. Despite decades of re...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/303514 2024-04-28T08:36:37+00:00 Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus Wittek, Boris Carnat, Gauthier Tison, Jean-Louis Gypens, Nathalie 2020-03-27 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/303514 https://dipot.ulb.ac.be/dspace/bitstream/2013/303514/3/Wittek_et_al_revisedmanuscript.pdf en eng uri/info:doi/10.1007/s00300-020-02651-0 uri/info:pii/2651 uri/info:scp/85082976937 https://dipot.ulb.ac.be/dspace/bitstream/2013/303514/3/Wittek_et_al_revisedmanuscript.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/303514 1 full-text file(s): info:eu-repo/semantics/openAccess Polar biology Glaciologie Climatologie Océanographie physique et chimique Océanographie biologique Sea Ice DMSP DMSO Fragilariopsis cylindrus Salinity Temperature info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2020 ftunivbruxelles 2024-04-10T00:10:31Z Sea ice is an extreme environment known to host microbial communities which produce high concentrations of the metabolites dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO). These two compounds are involved in the cycling of the climate-cooling gas dimethylsulfide. Despite decades of research, the drivers of these large concentrations in sea ice remain largely unknown. In this study, we use a cell culture approach to quantify for the first time the DMSP and DMSO cell quotas for the diatom Fragilariopsis cylindrus under combined shifts of temperature and salinity typically encountered in the sea-ice brine habitat. In doing so, we investigate two suggested potential metabolic functions for DMSP and DMSO: osmoregulation and cryoprotection. We observed an increase of both DMSP:Chl-a and DMSO:Chl-a in multiple experiments with salinities of 75 and 100 at constant temperature, which suggest osmoregulation for both compounds in the diatom cell. Stronger salinity shifts to 150 induced lethal osmotic shock resulting in massive cell death. Interestingly, combining salinity shifts with temperature shifts (as low as − 7.4 °C) did not modify drastically the DMSP and DMSO cell quotas, which may indicate that the cryoprotectant function of DMSP and DMSO in our diatom cultures was not-relevant. Also, decreasing the salinity to 20 at constant temperature suggested no cellular adaptation in terms of DMSP and DMSO cell quotas. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Polar Biology Sea ice DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Glaciologie Climatologie Océanographie physique et chimique Océanographie biologique Sea Ice DMSP DMSO Fragilariopsis cylindrus Salinity Temperature |
spellingShingle |
Glaciologie Climatologie Océanographie physique et chimique Océanographie biologique Sea Ice DMSP DMSO Fragilariopsis cylindrus Salinity Temperature Wittek, Boris Carnat, Gauthier Tison, Jean-Louis Gypens, Nathalie Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus |
topic_facet |
Glaciologie Climatologie Océanographie physique et chimique Océanographie biologique Sea Ice DMSP DMSO Fragilariopsis cylindrus Salinity Temperature |
description |
Sea ice is an extreme environment known to host microbial communities which produce high concentrations of the metabolites dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO). These two compounds are involved in the cycling of the climate-cooling gas dimethylsulfide. Despite decades of research, the drivers of these large concentrations in sea ice remain largely unknown. In this study, we use a cell culture approach to quantify for the first time the DMSP and DMSO cell quotas for the diatom Fragilariopsis cylindrus under combined shifts of temperature and salinity typically encountered in the sea-ice brine habitat. In doing so, we investigate two suggested potential metabolic functions for DMSP and DMSO: osmoregulation and cryoprotection. We observed an increase of both DMSP:Chl-a and DMSO:Chl-a in multiple experiments with salinities of 75 and 100 at constant temperature, which suggest osmoregulation for both compounds in the diatom cell. Stronger salinity shifts to 150 induced lethal osmotic shock resulting in massive cell death. Interestingly, combining salinity shifts with temperature shifts (as low as − 7.4 °C) did not modify drastically the DMSP and DMSO cell quotas, which may indicate that the cryoprotectant function of DMSP and DMSO in our diatom cultures was not-relevant. Also, decreasing the salinity to 20 at constant temperature suggested no cellular adaptation in terms of DMSP and DMSO cell quotas. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Wittek, Boris Carnat, Gauthier Tison, Jean-Louis Gypens, Nathalie |
author_facet |
Wittek, Boris Carnat, Gauthier Tison, Jean-Louis Gypens, Nathalie |
author_sort |
Wittek, Boris |
title |
Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus |
title_short |
Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus |
title_full |
Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus |
title_fullStr |
Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus |
title_full_unstemmed |
Response of dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) cell quotas to salinity and temperature shifts in the sea-ice diatom Fragilariopsis cylindrus |
title_sort |
response of dimethylsulfoniopropionate (dmsp) and dimethylsulfoxide (dmso) cell quotas to salinity and temperature shifts in the sea-ice diatom fragilariopsis cylindrus |
publishDate |
2020 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/303514 https://dipot.ulb.ac.be/dspace/bitstream/2013/303514/3/Wittek_et_al_revisedmanuscript.pdf |
genre |
Polar Biology Sea ice |
genre_facet |
Polar Biology Sea ice |
op_source |
Polar biology |
op_relation |
uri/info:doi/10.1007/s00300-020-02651-0 uri/info:pii/2651 uri/info:scp/85082976937 https://dipot.ulb.ac.be/dspace/bitstream/2013/303514/3/Wittek_et_al_revisedmanuscript.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/303514 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1797568331200331776 |