SHORT‐TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE 1
Microalgae growing within brine channels (85 psu salinity) of the surface ice layers of Antarctic pack ice showed considerable photosynthetic tolerance to the extreme environmental condition. Brine microalgae exposed to temperatures above −5°C and at irradiances up to 350 μmol photons·m −2 ·s −1 sho...
Published in: | Journal of Phycology |
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Online Access: | http://dx.doi.org/10.1111/j.1529-8817.2005.00106.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.2005.00106.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.2005.00106.x |
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crwiley:10.1111/j.1529-8817.2005.00106.x 2024-06-02T07:58:16+00:00 SHORT‐TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE 1 Ralph, Peter J. McMinn, Andrew Ryan, Ken G. Ashworth, Chris 2005 http://dx.doi.org/10.1111/j.1529-8817.2005.00106.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.2005.00106.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.2005.00106.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Phycology volume 41, issue 4, page 763-769 ISSN 0022-3646 1529-8817 journal-article 2005 crwiley https://doi.org/10.1111/j.1529-8817.2005.00106.x 2024-05-03T11:19:14Z Microalgae growing within brine channels (85 psu salinity) of the surface ice layers of Antarctic pack ice showed considerable photosynthetic tolerance to the extreme environmental condition. Brine microalgae exposed to temperatures above −5°C and at irradiances up to 350 μmol photons·m −2 ·s −1 showed no photosynthetic damage or limitations. Photosynthesis was limited (but not photoinhibited) when brine microalgae were exposed to −10°C, provided the irradiance remained under 50 μmol photons·m −2 ·s −1 . The highest level of photosynthetic activity (maximum relative electron transport rate [rETR max ]) in brine microalgae growing within the surface layer of sea ice was at approximately 18 μmol electrons·m −2 ·s −1 , which occurred at −1.8°C. Effective quantum yield of PSII and rETR max of the halotolerant brine microalgae exhibited a temperature‐dependent pattern, where both parameters were higher at −1.8°C and lower at −10°C. Relative ETR max at temperatures above −5°C were stable across a wide range of irradiance. Article in Journal/Newspaper Antarc* Antarctic Sea ice Wiley Online Library Antarctic Journal of Phycology 41 4 763 769 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Microalgae growing within brine channels (85 psu salinity) of the surface ice layers of Antarctic pack ice showed considerable photosynthetic tolerance to the extreme environmental condition. Brine microalgae exposed to temperatures above −5°C and at irradiances up to 350 μmol photons·m −2 ·s −1 showed no photosynthetic damage or limitations. Photosynthesis was limited (but not photoinhibited) when brine microalgae were exposed to −10°C, provided the irradiance remained under 50 μmol photons·m −2 ·s −1 . The highest level of photosynthetic activity (maximum relative electron transport rate [rETR max ]) in brine microalgae growing within the surface layer of sea ice was at approximately 18 μmol electrons·m −2 ·s −1 , which occurred at −1.8°C. Effective quantum yield of PSII and rETR max of the halotolerant brine microalgae exhibited a temperature‐dependent pattern, where both parameters were higher at −1.8°C and lower at −10°C. Relative ETR max at temperatures above −5°C were stable across a wide range of irradiance. |
format |
Article in Journal/Newspaper |
author |
Ralph, Peter J. McMinn, Andrew Ryan, Ken G. Ashworth, Chris |
spellingShingle |
Ralph, Peter J. McMinn, Andrew Ryan, Ken G. Ashworth, Chris SHORT‐TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE 1 |
author_facet |
Ralph, Peter J. McMinn, Andrew Ryan, Ken G. Ashworth, Chris |
author_sort |
Ralph, Peter J. |
title |
SHORT‐TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE 1 |
title_short |
SHORT‐TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE 1 |
title_full |
SHORT‐TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE 1 |
title_fullStr |
SHORT‐TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE 1 |
title_full_unstemmed |
SHORT‐TERM EFFECT OF TEMPERATURE ON THE PHOTOKINETICS OF MICROALGAE FROM THE SURFACE LAYERS OF ANTARCTIC PACK ICE 1 |
title_sort |
short‐term effect of temperature on the photokinetics of microalgae from the surface layers of antarctic pack ice 1 |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.1529-8817.2005.00106.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1529-8817.2005.00106.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1529-8817.2005.00106.x |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_source |
Journal of Phycology volume 41, issue 4, page 763-769 ISSN 0022-3646 1529-8817 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1529-8817.2005.00106.x |
container_title |
Journal of Phycology |
container_volume |
41 |
container_issue |
4 |
container_start_page |
763 |
op_container_end_page |
769 |
_version_ |
1800741561120587776 |