Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures
Exposure to high temperatures affects the photosynthetic processes in marine benthic microalgae by limiting the transport of electrons, thus reducing the ability of the cell to use light. This causes damage to the Photosystem II (PSII) and may lead to photoinhibition. However, the PSII of benthic mi...
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Online Access: | https://eprints.utas.edu.au/12122/ https://eprints.utas.edu.au/12122/1/Selleh_PB2011.pdf https://doi.org/10.1007/s00300-010-0943-4 |
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ftunivtasmania:oai:eprints.utas.edu.au:12122 2023-05-15T13:36:47+02:00 Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures Salleh, S McMinn, A 2011 application/pdf https://eprints.utas.edu.au/12122/ https://eprints.utas.edu.au/12122/1/Selleh_PB2011.pdf https://doi.org/10.1007/s00300-010-0943-4 en eng https://eprints.utas.edu.au/12122/1/Selleh_PB2011.pdf Salleh, S and McMinn, A 2011 , 'Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures' , Polar Biology, vol. 34 , pp. 855-869 , doi:10.1007/s00300-010-0943-4 <http://dx.doi.org/10.1007/s00300-010-0943-4>. cc_utas Antarctic benthic microalgae Photoinhibition Recovery Temperature Article PeerReviewed 2011 ftunivtasmania https://doi.org/10.1007/s00300-010-0943-4 2020-05-30T07:25:53Z Exposure to high temperatures affects the photosynthetic processes in marine benthic microalgae by limiting the transport of electrons, thus reducing the ability of the cell to use light. This causes damage to the Photosystem II (PSII) and may lead to photoinhibition. However, the PSII of benthic microalgal communities from Brown Bay, eastern Antarctica, were relatively unaffected by significant changes in temperature. Benthic microalgae exposed to temperatures up to 8C and an irradiance of 450 lmol photons m-2 s-1 did not experience any photosynthetic damage or irreversible photoinhibition. The effective quantum yield (DF/Fm0) at 8C (0.433 ± 0.042) was higher by comparison to cell incubated at -0.1C (0.373 ± 0.015) with similar irradiances. Temperatures down to -5C at a similar irradiance showed a decrease in photosynthesis with decreasing temperature, but no severe photoinhibition as the cells were able to dissipate excess energy via non-photochemical quenching and recover from damage. These responses are consistent with those recorded in past studies on Antarctic benthic microalgae and suggest that short-term temperature change (from -5 to 8C) will not do irreversible damage to the PSII and will not affect the photosynthesis of the benthic microalgae. Article in Journal/Newspaper Antarc* Antarctic Antarctica Polar Biology University of Tasmania: UTas ePrints Antarctic Brown Bay ENVELOPE(110.550,110.550,-66.278,-66.278) Polar Biology 34 6 855 869 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
Antarctic benthic microalgae Photoinhibition Recovery Temperature |
spellingShingle |
Antarctic benthic microalgae Photoinhibition Recovery Temperature Salleh, S McMinn, A Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures |
topic_facet |
Antarctic benthic microalgae Photoinhibition Recovery Temperature |
description |
Exposure to high temperatures affects the photosynthetic processes in marine benthic microalgae by limiting the transport of electrons, thus reducing the ability of the cell to use light. This causes damage to the Photosystem II (PSII) and may lead to photoinhibition. However, the PSII of benthic microalgal communities from Brown Bay, eastern Antarctica, were relatively unaffected by significant changes in temperature. Benthic microalgae exposed to temperatures up to 8C and an irradiance of 450 lmol photons m-2 s-1 did not experience any photosynthetic damage or irreversible photoinhibition. The effective quantum yield (DF/Fm0) at 8C (0.433 ± 0.042) was higher by comparison to cell incubated at -0.1C (0.373 ± 0.015) with similar irradiances. Temperatures down to -5C at a similar irradiance showed a decrease in photosynthesis with decreasing temperature, but no severe photoinhibition as the cells were able to dissipate excess energy via non-photochemical quenching and recover from damage. These responses are consistent with those recorded in past studies on Antarctic benthic microalgae and suggest that short-term temperature change (from -5 to 8C) will not do irreversible damage to the PSII and will not affect the photosynthesis of the benthic microalgae. |
format |
Article in Journal/Newspaper |
author |
Salleh, S McMinn, A |
author_facet |
Salleh, S McMinn, A |
author_sort |
Salleh, S |
title |
Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures |
title_short |
Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures |
title_full |
Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures |
title_fullStr |
Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures |
title_full_unstemmed |
Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures |
title_sort |
photosynthetic response and recovery of antarctic marine benthic microalgae exposed to elevated irradiances and temperatures |
publishDate |
2011 |
url |
https://eprints.utas.edu.au/12122/ https://eprints.utas.edu.au/12122/1/Selleh_PB2011.pdf https://doi.org/10.1007/s00300-010-0943-4 |
long_lat |
ENVELOPE(110.550,110.550,-66.278,-66.278) |
geographic |
Antarctic Brown Bay |
geographic_facet |
Antarctic Brown Bay |
genre |
Antarc* Antarctic Antarctica Polar Biology |
genre_facet |
Antarc* Antarctic Antarctica Polar Biology |
op_relation |
https://eprints.utas.edu.au/12122/1/Selleh_PB2011.pdf Salleh, S and McMinn, A 2011 , 'Photosynthetic response and recovery of Antarctic marine benthic microalgae exposed to elevated irradiances and temperatures' , Polar Biology, vol. 34 , pp. 855-869 , doi:10.1007/s00300-010-0943-4 <http://dx.doi.org/10.1007/s00300-010-0943-4>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.1007/s00300-010-0943-4 |
container_title |
Polar Biology |
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34 |
container_issue |
6 |
container_start_page |
855 |
op_container_end_page |
869 |
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