Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates
Global warming scenarios indicate that in subarctic regions, the precipitation will increase in the future. Coastal bacteria will thus receive increasing organic carbon sources from land runoff. How such changes will affect the function and taxonomic composition of coastal bacteria is poorly known....
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ftpubmed:oai:pubmedcentral.nih.gov:8888917 2023-05-15T18:28:18+02:00 Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates Zhao, Li Brugel, Sonia Ramasamy, Kesava Priyan Andersson, Agneta 2022-02-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888917/ https://doi.org/10.3389/fmicb.2021.726844 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888917/ http://dx.doi.org/10.3389/fmicb.2021.726844 Copyright © 2022 Zhao, Brugel, Ramasamy and Andersson. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Front Microbiol Microbiology Text 2022 ftpubmed https://doi.org/10.3389/fmicb.2021.726844 2022-03-06T02:05:34Z Global warming scenarios indicate that in subarctic regions, the precipitation will increase in the future. Coastal bacteria will thus receive increasing organic carbon sources from land runoff. How such changes will affect the function and taxonomic composition of coastal bacteria is poorly known. We performed a 10-day experiment with two isolated bacteria: Shewanella baltica from a seaside location and Duganella sp. from a river mouth, and provided them with a plankton and a river extract as food substrate. The bacterial growth and carbon consumption were monitored over the experimental period. Shewanella and Duganella consumed 40% and 30% of the plankton extract, respectively, while the consumption of the river extract was low for both bacteria, ∼1%. Shewanella showed the highest bacterial growth efficiency (BGE) (12%) when grown on plankton extract, while when grown on river extract, the BGE was only 1%. Duganella showed low BGE when grown on plankton extract (< 1%) and slightly higher BGE when grown on river extract (2%). The cell growth yield of Duganella was higher than that of Shewanella when grown on river extract. These results indicate that Duganella is more adapted to terrestrial organic substrates with low nutritional availability, while Shewanella is adapted to eutrophied conditions. The different growth performance of the bacteria could be traced to genomic variations. A closely related genome of Shewanella was shown to harbor genes for the sequestration of autochthonously produced carbon substrates, while Duganella contained genes for the degradation of relatively refractive terrestrial organic matter. The results may reflect the influence of environmental drivers on bacterial community composition in natural aquatic environments. Elevated inflows of terrestrial organic matter to coastal areas in subarctic regions would lead to increased occurrence of bacteria adapted to the degradation of complex terrestrial compounds with a low bioavailability. Text Subarctic PubMed Central (PMC) Frontiers in Microbiology 12 |
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ftpubmed |
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English |
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Microbiology |
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Microbiology Zhao, Li Brugel, Sonia Ramasamy, Kesava Priyan Andersson, Agneta Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates |
topic_facet |
Microbiology |
description |
Global warming scenarios indicate that in subarctic regions, the precipitation will increase in the future. Coastal bacteria will thus receive increasing organic carbon sources from land runoff. How such changes will affect the function and taxonomic composition of coastal bacteria is poorly known. We performed a 10-day experiment with two isolated bacteria: Shewanella baltica from a seaside location and Duganella sp. from a river mouth, and provided them with a plankton and a river extract as food substrate. The bacterial growth and carbon consumption were monitored over the experimental period. Shewanella and Duganella consumed 40% and 30% of the plankton extract, respectively, while the consumption of the river extract was low for both bacteria, ∼1%. Shewanella showed the highest bacterial growth efficiency (BGE) (12%) when grown on plankton extract, while when grown on river extract, the BGE was only 1%. Duganella showed low BGE when grown on plankton extract (< 1%) and slightly higher BGE when grown on river extract (2%). The cell growth yield of Duganella was higher than that of Shewanella when grown on river extract. These results indicate that Duganella is more adapted to terrestrial organic substrates with low nutritional availability, while Shewanella is adapted to eutrophied conditions. The different growth performance of the bacteria could be traced to genomic variations. A closely related genome of Shewanella was shown to harbor genes for the sequestration of autochthonously produced carbon substrates, while Duganella contained genes for the degradation of relatively refractive terrestrial organic matter. The results may reflect the influence of environmental drivers on bacterial community composition in natural aquatic environments. Elevated inflows of terrestrial organic matter to coastal areas in subarctic regions would lead to increased occurrence of bacteria adapted to the degradation of complex terrestrial compounds with a low bioavailability. |
format |
Text |
author |
Zhao, Li Brugel, Sonia Ramasamy, Kesava Priyan Andersson, Agneta |
author_facet |
Zhao, Li Brugel, Sonia Ramasamy, Kesava Priyan Andersson, Agneta |
author_sort |
Zhao, Li |
title |
Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates |
title_short |
Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates |
title_full |
Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates |
title_fullStr |
Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates |
title_full_unstemmed |
Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates |
title_sort |
response of coastal shewanella and duganella bacteria to planktonic and terrestrial food substrates |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888917/ https://doi.org/10.3389/fmicb.2021.726844 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Front Microbiol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888917/ http://dx.doi.org/10.3389/fmicb.2021.726844 |
op_rights |
Copyright © 2022 Zhao, Brugel, Ramasamy and Andersson. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2021.726844 |
container_title |
Frontiers in Microbiology |
container_volume |
12 |
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