The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria
The effects of low temperatures, freezing and desiccation on a cyanobacterium (Phormidium) and an alga (Prasiola) from terrestrial Antarctic habitats were investigated. Net photosynthesis per unit dry weight, measured by gas exchange, and the vital stain Auramine O were used to monitor recovery from...
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Online Access: | http://nora.nerc.ac.uk/id/eprint/520983/ https://doi.org/10.1007/BF00238287 |
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ftnerc:oai:nora.nerc.ac.uk:520983 2023-05-15T13:49:35+02:00 The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria Davey, Martin C. 1989-10 http://nora.nerc.ac.uk/id/eprint/520983/ https://doi.org/10.1007/BF00238287 unknown Springer Davey, Martin C. 1989 The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria. Polar Biology, 10 (1). 29-36. https://doi.org/10.1007/BF00238287 <https://doi.org/10.1007/BF00238287> Publication - Article PeerReviewed 1989 ftnerc https://doi.org/10.1007/BF00238287 2023-02-04T19:47:06Z The effects of low temperatures, freezing and desiccation on a cyanobacterium (Phormidium) and an alga (Prasiola) from terrestrial Antarctic habitats were investigated. Net photosynthesis per unit dry weight, measured by gas exchange, and the vital stain Auramine O were used to monitor recovery from stress. Photosynthetic rates by Prasiola were an order of magnitude higher than those by Phormidium, although both continued photosynthesis at sub-zero temperatures. Prasiola survived freezing more readily, but in both cases survival was dependant upon the prevailing light conditions and the presence/absence of free water. Phormidium readily survived desiccation, whereas high mortality occurred in Prasiola, particularly at high light intensities. The results obtained are discussed in relation to the habitat and ecology of the organisms. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Natural Environment Research Council: NERC Open Research Archive Antarctic Polar Biology 10 1 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
description |
The effects of low temperatures, freezing and desiccation on a cyanobacterium (Phormidium) and an alga (Prasiola) from terrestrial Antarctic habitats were investigated. Net photosynthesis per unit dry weight, measured by gas exchange, and the vital stain Auramine O were used to monitor recovery from stress. Photosynthetic rates by Prasiola were an order of magnitude higher than those by Phormidium, although both continued photosynthesis at sub-zero temperatures. Prasiola survived freezing more readily, but in both cases survival was dependant upon the prevailing light conditions and the presence/absence of free water. Phormidium readily survived desiccation, whereas high mortality occurred in Prasiola, particularly at high light intensities. The results obtained are discussed in relation to the habitat and ecology of the organisms. |
format |
Article in Journal/Newspaper |
author |
Davey, Martin C. |
spellingShingle |
Davey, Martin C. The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria |
author_facet |
Davey, Martin C. |
author_sort |
Davey, Martin C. |
title |
The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria |
title_short |
The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria |
title_full |
The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria |
title_fullStr |
The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria |
title_full_unstemmed |
The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria |
title_sort |
effects of freezing and desiccation on photosynthesis and survival of terrestrial antarctic algae and cyanobacteria |
publisher |
Springer |
publishDate |
1989 |
url |
http://nora.nerc.ac.uk/id/eprint/520983/ https://doi.org/10.1007/BF00238287 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Polar Biology |
genre_facet |
Antarc* Antarctic Polar Biology |
op_relation |
Davey, Martin C. 1989 The effects of freezing and desiccation on photosynthesis and survival of terrestrial Antarctic algae and cyanobacteria. Polar Biology, 10 (1). 29-36. https://doi.org/10.1007/BF00238287 <https://doi.org/10.1007/BF00238287> |
op_doi |
https://doi.org/10.1007/BF00238287 |
container_title |
Polar Biology |
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10 |
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1 |
_version_ |
1766251811492069376 |