Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound.
La transcription des symboles et des caractères spéciaux utilisés dans la version originale de ce résumé n’a pas été possible en raison de limitations techniques. La version correcte de ce résumé peut être lue dans le document original. We determined the distribution and bacterial metabolism of dime...
Published in: | Journal of Geophysical Research: Oceans |
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2012
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Online Access: | https://espace.inrs.ca/id/eprint/7296/ https://espace.inrs.ca/id/eprint/7296/1/P2142.pdf https://doi.org/10.1029/2011JC007330 |
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ftinrsquebec:oai:espace.inrs.ca:7296 2023-05-15T14:55:52+02:00 Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. Motard-Côté, Jessie Levasseur, Maurice Scarratt, Michael Michaud, Sonia Gratton, Yves Rivkin, Richard B. Keats, Kimberley Gosselin, Michel Tremblay, Jean-Éric Kiene, Ronald P. Lovejoy, Connie 2012 application/pdf https://espace.inrs.ca/id/eprint/7296/ https://espace.inrs.ca/id/eprint/7296/1/P2142.pdf https://doi.org/10.1029/2011JC007330 en eng https://espace.inrs.ca/id/eprint/7296/1/P2142.pdf Motard-Côté, Jessie, Levasseur, Maurice, Scarratt, Michael, Michaud, Sonia, Gratton, Yves, Rivkin, Richard B., Keats, Kimberley, Gosselin, Michel, Tremblay, Jean-Éric, Kiene, Ronald P. et Lovejoy, Connie (2012). Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. Journal of Geophysical Research: Oceans , vol. 117 , nº C9. C00G11. DOI:10.1029/2011JC007330 <https://doi.org/10.1029/2011JC007330>. doi:10.1029/2011JC007330 Arctic bacteria dimethylsulfide ocean Article Évalué par les pairs 2012 ftinrsquebec https://doi.org/10.1029/2011JC007330 2023-02-10T11:44:30Z La transcription des symboles et des caractères spéciaux utilisés dans la version originale de ce résumé n’a pas été possible en raison de limitations techniques. La version correcte de ce résumé peut être lue dans le document original. We determined the distribution and bacterial metabolism of dimethylsulfoniopropionate (DMSP) and dimethylsulfide (DMS) in the two dominant surface water masses in northern Baffin Bay/Lancaster Sound during September 2008. Concentrations of particulate DMSP (DMSPp; 5–70 nmol L−1) and the DMSPp:Chl a ratios (15–229 nmol μg−1) were relatively high, suggesting the presence of DMSP‐rich phytoplankton taxa. Photosynthetic picoeukaryotes and total prokaryotes were tenfold and threefold more abundant in Baffin Bay surface water (BBS) than in Arctic surface water (AS), respectively. Heterotrophic bacterial production (0.07–2.5μC L−1 d−1) and bacterial turnover rate constants for dissolved DMSP (DMSPd) were low (0.03–0.11 h−1) compared with the values previously reported in warmer and more productive environments. Nonetheless, a relatively large proportion (12%–31%) of the DMSP metabolized by the bacteria was converted into DMS. Additionally, between 40% and 65% of the total bacterial cells incorporated sulfur from DMSPd, with Gammaproteobacteriaand non‐Roseobacter Alphaproteobacteria (AlfR‐) contributing proportionally more to total DMSP‐incorporating cells. The contribution of AlfR‐ to the total prokaryotic community was 50% higher in BBS than in AS, while the bacterial rate constants for DMSPd turnover were 78% higher in BBS than in AS. These results show that the two different Arctic water masses host specific microbial assemblages that result in distinct affinity for DMSP. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Lancaster Sound Phytoplankton Institut national de la recherche scientifique, Québec: Espace INRS Arctic Baffin Bay Lancaster Sound ENVELOPE(-83.999,-83.999,74.218,74.218) Journal of Geophysical Research: Oceans 117 C9 n/a n/a |
institution |
Open Polar |
collection |
Institut national de la recherche scientifique, Québec: Espace INRS |
op_collection_id |
ftinrsquebec |
language |
English |
topic |
Arctic bacteria dimethylsulfide ocean |
spellingShingle |
Arctic bacteria dimethylsulfide ocean Motard-Côté, Jessie Levasseur, Maurice Scarratt, Michael Michaud, Sonia Gratton, Yves Rivkin, Richard B. Keats, Kimberley Gosselin, Michel Tremblay, Jean-Éric Kiene, Ronald P. Lovejoy, Connie Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. |
topic_facet |
Arctic bacteria dimethylsulfide ocean |
description |
La transcription des symboles et des caractères spéciaux utilisés dans la version originale de ce résumé n’a pas été possible en raison de limitations techniques. La version correcte de ce résumé peut être lue dans le document original. We determined the distribution and bacterial metabolism of dimethylsulfoniopropionate (DMSP) and dimethylsulfide (DMS) in the two dominant surface water masses in northern Baffin Bay/Lancaster Sound during September 2008. Concentrations of particulate DMSP (DMSPp; 5–70 nmol L−1) and the DMSPp:Chl a ratios (15–229 nmol μg−1) were relatively high, suggesting the presence of DMSP‐rich phytoplankton taxa. Photosynthetic picoeukaryotes and total prokaryotes were tenfold and threefold more abundant in Baffin Bay surface water (BBS) than in Arctic surface water (AS), respectively. Heterotrophic bacterial production (0.07–2.5μC L−1 d−1) and bacterial turnover rate constants for dissolved DMSP (DMSPd) were low (0.03–0.11 h−1) compared with the values previously reported in warmer and more productive environments. Nonetheless, a relatively large proportion (12%–31%) of the DMSP metabolized by the bacteria was converted into DMS. Additionally, between 40% and 65% of the total bacterial cells incorporated sulfur from DMSPd, with Gammaproteobacteriaand non‐Roseobacter Alphaproteobacteria (AlfR‐) contributing proportionally more to total DMSP‐incorporating cells. The contribution of AlfR‐ to the total prokaryotic community was 50% higher in BBS than in AS, while the bacterial rate constants for DMSPd turnover were 78% higher in BBS than in AS. These results show that the two different Arctic water masses host specific microbial assemblages that result in distinct affinity for DMSP. |
format |
Article in Journal/Newspaper |
author |
Motard-Côté, Jessie Levasseur, Maurice Scarratt, Michael Michaud, Sonia Gratton, Yves Rivkin, Richard B. Keats, Kimberley Gosselin, Michel Tremblay, Jean-Éric Kiene, Ronald P. Lovejoy, Connie |
author_facet |
Motard-Côté, Jessie Levasseur, Maurice Scarratt, Michael Michaud, Sonia Gratton, Yves Rivkin, Richard B. Keats, Kimberley Gosselin, Michel Tremblay, Jean-Éric Kiene, Ronald P. Lovejoy, Connie |
author_sort |
Motard-Côté, Jessie |
title |
Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. |
title_short |
Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. |
title_full |
Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. |
title_fullStr |
Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. |
title_full_unstemmed |
Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. |
title_sort |
distribution and metabolism of dimethylsulfoniopropionate (dmsp) and phylogenetic affiliation of dmsp-assimilating bacteria in northern baffin bay/lancaster sound. |
publishDate |
2012 |
url |
https://espace.inrs.ca/id/eprint/7296/ https://espace.inrs.ca/id/eprint/7296/1/P2142.pdf https://doi.org/10.1029/2011JC007330 |
long_lat |
ENVELOPE(-83.999,-83.999,74.218,74.218) |
geographic |
Arctic Baffin Bay Lancaster Sound |
geographic_facet |
Arctic Baffin Bay Lancaster Sound |
genre |
Arctic Baffin Bay Baffin Bay Baffin Lancaster Sound Phytoplankton |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Lancaster Sound Phytoplankton |
op_relation |
https://espace.inrs.ca/id/eprint/7296/1/P2142.pdf Motard-Côté, Jessie, Levasseur, Maurice, Scarratt, Michael, Michaud, Sonia, Gratton, Yves, Rivkin, Richard B., Keats, Kimberley, Gosselin, Michel, Tremblay, Jean-Éric, Kiene, Ronald P. et Lovejoy, Connie (2012). Distribution and metabolism of dimethylsulfoniopropionate (DMSP) and phylogenetic affiliation of DMSP-assimilating bacteria in northern Baffin Bay/Lancaster Sound. Journal of Geophysical Research: Oceans , vol. 117 , nº C9. C00G11. DOI:10.1029/2011JC007330 <https://doi.org/10.1029/2011JC007330>. doi:10.1029/2011JC007330 |
op_doi |
https://doi.org/10.1029/2011JC007330 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
117 |
container_issue |
C9 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766327881348153344 |