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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Umeå universitet, Institutionen för ekologi, miljö och geovetenskap
2022
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-192537 https://doi.org/10.3389/fmicb.2021.726844 |
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ftumeauniv:oai:DiVA.org:umu-192537 2024-02-11T10:08:59+01:00 Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates Zhao, Li Brugel, Sonia Ramasamy, Kesava Priyan Andersson, Agneta 2022 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-192537 https://doi.org/10.3389/fmicb.2021.726844 eng eng Umeå universitet, Institutionen för ekologi, miljö och geovetenskap Umeå universitet, Umeå marina forskningscentrum (UMF) Frontiers in Microbiology, 2022, 12, orcid:0000-0002-1298-3839 orcid:0000-0001-7819-9038 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-192537 doi:10.3389/fmicb.2021.726844 ISI:000767972200001 Scopus 2-s2.0-85125652797 info:eu-repo/semantics/openAccess Ecology Ekologi Article in journal info:eu-repo/semantics/article text 2022 ftumeauniv https://doi.org/10.3389/fmicb.2021.726844 2024-01-17T23:36:43Z 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. Article in Journal/Newspaper Subarctic Umeå University: Publications (DiVA) Frontiers in Microbiology 12 |
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Open Polar |
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Umeå University: Publications (DiVA) |
op_collection_id |
ftumeauniv |
language |
English |
topic |
Ecology Ekologi |
spellingShingle |
Ecology Ekologi Zhao, Li Brugel, Sonia Ramasamy, Kesava Priyan Andersson, Agneta Response of Coastal Shewanella and Duganella Bacteria to Planktonic and Terrestrial Food Substrates |
topic_facet |
Ecology Ekologi |
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 |
Article in Journal/Newspaper |
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 |
Umeå universitet, Institutionen för ekologi, miljö och geovetenskap |
publishDate |
2022 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-192537 https://doi.org/10.3389/fmicb.2021.726844 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
Frontiers in Microbiology, 2022, 12, orcid:0000-0002-1298-3839 orcid:0000-0001-7819-9038 http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-192537 doi:10.3389/fmicb.2021.726844 ISI:000767972200001 Scopus 2-s2.0-85125652797 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmicb.2021.726844 |
container_title |
Frontiers in Microbiology |
container_volume |
12 |
_version_ |
1790608663859167232 |