Short note: extracellular export and consumption of glucose in Antarctic sea ice
Extracellular carbohydrate production is widespread in sea ice microbial communities, being produced by both algae and bacteria. Under stressful conditions, including nutrient limitation and high light, cells may export excess fixed carbon as glucose. Glucose microsensors were used to measure extrac...
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Online Access: | https://doi.org/10.1007/s00300-022-03031-6 http://ecite.utas.edu.au/149426 |
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ftunivtasecite:oai:ecite.utas.edu.au:149426 2023-05-15T13:42:40+02:00 Short note: extracellular export and consumption of glucose in Antarctic sea ice Kennedy, F McMinn, A Martin, A 2022 application/pdf https://doi.org/10.1007/s00300-022-03031-6 http://ecite.utas.edu.au/149426 en eng Springer-Verlag http://ecite.utas.edu.au/149426/1/149426 - extracellular export and consumption of glucose in Antarctic.pdf http://dx.doi.org/10.1007/s00300-022-03031-6 Kennedy, F and McMinn, A and Martin, A, Short note: extracellular export and consumption of glucose in Antarctic sea ice, Polar Biology, 45 pp. 763-768. ISSN 0722-4060 (2022) [Refereed Article] http://ecite.utas.edu.au/149426 Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) Refereed Article PeerReviewed 2022 ftunivtasecite https://doi.org/10.1007/s00300-022-03031-6 2022-10-24T22:16:43Z Extracellular carbohydrate production is widespread in sea ice microbial communities, being produced by both algae and bacteria. Under stressful conditions, including nutrient limitation and high light, cells may export excess fixed carbon as glucose. Glucose microsensors were used to measure extracellular glucose exudation and consumption in a sea ice algal community. Glucose export increased with increasing irradiance between 15 and 512mol photons m −2 s −1 . This export correlated with declining F v F m values and increasing NPQ values, implying that glucose export resulted from exposure to above optimal irradiances. Glucose concentrations in samples treated with DCMU to block photosynthesis, declined at all irradiances. Bacterial consumption of glucose was between 6 and 34% of extracellular export per hour. There have been very few measurements of DOC/glucose in sea ice and the data presented here make an important contribution to our understanding of sea ice microbial processes. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Sea ice eCite UTAS (University of Tasmania) Antarctic Polar Biology 45 4 763 768 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) Kennedy, F McMinn, A Martin, A Short note: extracellular export and consumption of glucose in Antarctic sea ice |
topic_facet |
Biological Sciences Ecology Marine and estuarine ecology (incl. marine ichthyology) |
description |
Extracellular carbohydrate production is widespread in sea ice microbial communities, being produced by both algae and bacteria. Under stressful conditions, including nutrient limitation and high light, cells may export excess fixed carbon as glucose. Glucose microsensors were used to measure extracellular glucose exudation and consumption in a sea ice algal community. Glucose export increased with increasing irradiance between 15 and 512mol photons m −2 s −1 . This export correlated with declining F v F m values and increasing NPQ values, implying that glucose export resulted from exposure to above optimal irradiances. Glucose concentrations in samples treated with DCMU to block photosynthesis, declined at all irradiances. Bacterial consumption of glucose was between 6 and 34% of extracellular export per hour. There have been very few measurements of DOC/glucose in sea ice and the data presented here make an important contribution to our understanding of sea ice microbial processes. |
format |
Article in Journal/Newspaper |
author |
Kennedy, F McMinn, A Martin, A |
author_facet |
Kennedy, F McMinn, A Martin, A |
author_sort |
Kennedy, F |
title |
Short note: extracellular export and consumption of glucose in Antarctic sea ice |
title_short |
Short note: extracellular export and consumption of glucose in Antarctic sea ice |
title_full |
Short note: extracellular export and consumption of glucose in Antarctic sea ice |
title_fullStr |
Short note: extracellular export and consumption of glucose in Antarctic sea ice |
title_full_unstemmed |
Short note: extracellular export and consumption of glucose in Antarctic sea ice |
title_sort |
short note: extracellular export and consumption of glucose in antarctic sea ice |
publisher |
Springer-Verlag |
publishDate |
2022 |
url |
https://doi.org/10.1007/s00300-022-03031-6 http://ecite.utas.edu.au/149426 |
geographic |
Antarctic |
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Antarctic |
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Antarc* Antarctic Polar Biology Sea ice |
genre_facet |
Antarc* Antarctic Polar Biology Sea ice |
op_relation |
http://ecite.utas.edu.au/149426/1/149426 - extracellular export and consumption of glucose in Antarctic.pdf http://dx.doi.org/10.1007/s00300-022-03031-6 Kennedy, F and McMinn, A and Martin, A, Short note: extracellular export and consumption of glucose in Antarctic sea ice, Polar Biology, 45 pp. 763-768. ISSN 0722-4060 (2022) [Refereed Article] http://ecite.utas.edu.au/149426 |
op_doi |
https://doi.org/10.1007/s00300-022-03031-6 |
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Polar Biology |
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45 |
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4 |
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763 |
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768 |
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1766171441576804352 |