Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic Ocean
Global warming affects primary producers in the Arctic, with potential consequences for the bacterial community composition through the consumption of microalgae-derived dissolved organic matter (DOM). To determine the degree of specificity in the use of an exudate by bacterial taxa, we used simple...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Online Access: | http://dx.doi.org/10.1098/rsta.2019.0356 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2019.0356 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2019.0356 |
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crroyalsociety:10.1098/rsta.2019.0356 2024-09-15T17:53:16+00:00 Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic Ocean Tisserand, Lucas Dadaglio, Laëtitia Intertaglia, Laurent Catala, Philippe Panagiotopoulos, Christos Obernosterer, Ingrid Joux, Fabien Centre National d'Etudes Spatiales CERC Institut Polaire Français Paul Emile Victor ArcticNet Agence Nationale de la Recherche Fondation Total LEFE-CYBER CNRS program French Arctic Initiative 2020 http://dx.doi.org/10.1098/rsta.2019.0356 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2019.0356 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2019.0356 en eng The Royal Society https://royalsociety.org/-/media/journals/author/Licence-to-Publish-20062019-final.pdf https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 378, issue 2181, page 20190356 ISSN 1364-503X 1471-2962 journal-article 2020 crroyalsociety https://doi.org/10.1098/rsta.2019.0356 2024-08-05T04:35:25Z Global warming affects primary producers in the Arctic, with potential consequences for the bacterial community composition through the consumption of microalgae-derived dissolved organic matter (DOM). To determine the degree of specificity in the use of an exudate by bacterial taxa, we used simple microalgae–bacteria model systems. We isolated 92 bacterial strains from the sea ice bottom and the water column in spring–summer in the Baffin Bay (Arctic Ocean). The isolates were grouped into 42 species belonging to Proteobacteria, Bacteroidetes, Actinobacteria and Firmicutes. Forty strains were tested for their capacity to grow on the exudate from two Arctic diatoms . Most of the strains tested (78%) were able to grow on the exudate from the pelagic diatom Chaetoceros neogracilis , and 33% were able to use the exudate from the sea ice diatom Fragilariopsis cylindrus . 17.5% of the strains were not able to grow with any exudate, while 27.5% of the strains were able to use both types of exudates. All strains belonging to Flavobacteriia ( n = 10) were able to use the DOM provided by C. neogracilis , and this exudate sustained a growth capacity of up to 100 times higher than diluted Marine Broth medium, of two Pseudomonas sp. strains and one Sulfitobacter strain. The variable bioavailability of exudates to bacterial strains highlights the potential role of microalgae in shaping the bacterial community composition. This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning'. Article in Journal/Newspaper Arctic Ocean Baffin Bay Baffin Bay Baffin Global warming Sea ice The Royal Society Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378 2181 20190356 |
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Open Polar |
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The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
Global warming affects primary producers in the Arctic, with potential consequences for the bacterial community composition through the consumption of microalgae-derived dissolved organic matter (DOM). To determine the degree of specificity in the use of an exudate by bacterial taxa, we used simple microalgae–bacteria model systems. We isolated 92 bacterial strains from the sea ice bottom and the water column in spring–summer in the Baffin Bay (Arctic Ocean). The isolates were grouped into 42 species belonging to Proteobacteria, Bacteroidetes, Actinobacteria and Firmicutes. Forty strains were tested for their capacity to grow on the exudate from two Arctic diatoms . Most of the strains tested (78%) were able to grow on the exudate from the pelagic diatom Chaetoceros neogracilis , and 33% were able to use the exudate from the sea ice diatom Fragilariopsis cylindrus . 17.5% of the strains were not able to grow with any exudate, while 27.5% of the strains were able to use both types of exudates. All strains belonging to Flavobacteriia ( n = 10) were able to use the DOM provided by C. neogracilis , and this exudate sustained a growth capacity of up to 100 times higher than diluted Marine Broth medium, of two Pseudomonas sp. strains and one Sulfitobacter strain. The variable bioavailability of exudates to bacterial strains highlights the potential role of microalgae in shaping the bacterial community composition. This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning'. |
author2 |
Centre National d'Etudes Spatiales CERC Institut Polaire Français Paul Emile Victor ArcticNet Agence Nationale de la Recherche Fondation Total LEFE-CYBER CNRS program French Arctic Initiative |
format |
Article in Journal/Newspaper |
author |
Tisserand, Lucas Dadaglio, Laëtitia Intertaglia, Laurent Catala, Philippe Panagiotopoulos, Christos Obernosterer, Ingrid Joux, Fabien |
spellingShingle |
Tisserand, Lucas Dadaglio, Laëtitia Intertaglia, Laurent Catala, Philippe Panagiotopoulos, Christos Obernosterer, Ingrid Joux, Fabien Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic Ocean |
author_facet |
Tisserand, Lucas Dadaglio, Laëtitia Intertaglia, Laurent Catala, Philippe Panagiotopoulos, Christos Obernosterer, Ingrid Joux, Fabien |
author_sort |
Tisserand, Lucas |
title |
Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic Ocean |
title_short |
Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic Ocean |
title_full |
Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic Ocean |
title_fullStr |
Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic Ocean |
title_full_unstemmed |
Use of organic exudates from two polar diatoms by bacterial isolates from the Arctic Ocean |
title_sort |
use of organic exudates from two polar diatoms by bacterial isolates from the arctic ocean |
publisher |
The Royal Society |
publishDate |
2020 |
url |
http://dx.doi.org/10.1098/rsta.2019.0356 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2019.0356 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2019.0356 |
genre |
Arctic Ocean Baffin Bay Baffin Bay Baffin Global warming Sea ice |
genre_facet |
Arctic Ocean Baffin Bay Baffin Bay Baffin Global warming Sea ice |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 378, issue 2181, page 20190356 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/-/media/journals/author/Licence-to-Publish-20062019-final.pdf https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2019.0356 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
378 |
container_issue |
2181 |
container_start_page |
20190356 |
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1810295297426849792 |