Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions
The vegetation of many terrestrial habitats across Antarctica is dominated by poikilohydric symbiotic lichens. Terrestrial habitats generally are characterised by extended exposure to desiccation and high irradiation. Physiological adaptation mechanisms of the algal partner (photobiont) are key fact...
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ftnerc:oai:nora.nerc.ac.uk:519493 2023-05-15T13:49:34+02:00 Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions Determeyer-Wiedmann, Nadine Sadowsky, Andres Convey, Peter Ott, Sieglinde 2019-02 text http://nora.nerc.ac.uk/id/eprint/519493/ https://nora.nerc.ac.uk/id/eprint/519493/1/MS%20Determeyer-Wiedmann%20et%20al.%20life%20strategies.pdf https://link.springer.com/article/10.1007/s00300-018-2430-2 en eng Springer https://nora.nerc.ac.uk/id/eprint/519493/1/MS%20Determeyer-Wiedmann%20et%20al.%20life%20strategies.pdf Determeyer-Wiedmann, Nadine; Sadowsky, Andres; Convey, Peter orcid:0000-0001-8497-9903 Ott, Sieglinde. 2019 Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions. Polar Biology, 42 (2). 395-405. https://doi.org/10.1007/s00300-018-2430-2 <https://doi.org/10.1007/s00300-018-2430-2> Publication - Article PeerReviewed 2019 ftnerc https://doi.org/10.1007/s00300-018-2430-2 2023-02-04T19:46:13Z The vegetation of many terrestrial habitats across Antarctica is dominated by poikilohydric symbiotic lichens. Terrestrial habitats generally are characterised by extended exposure to desiccation and high irradiation. Physiological adaptation mechanisms of the algal partner (photobiont) are key factors in the successful colonisation of lichens of locations under severe environmental conditions. This study focused on isolated photobionts of the genus Trebouxia, from the continental Antarctic lichens Buellia frigida, Pleopsidium chlorophanum, the maritime Antarctic lichen Umbilicaria antarctica, and the Swedish lichen Fulgensia bracteata from a moderate temperate ecosystem at sea level. The photosystems PS II and PS I and the ratio of linear to cyclic electron transport were studied to elucidate adaptation mechanisms in the physiology of the photobionts in response to desiccation and light stress. The photobionts of the Antarctic lichens demonstrated striking tolerance to the stress conditions studied. Although the photobionts of U. antarctica and P. chlorophanum were genetically identical based on non-coding internally transcribed spacer (ITS), their physiological responses were clearly different, possibly indicating ecotypic differentiation. The photobiont of F. bracteata showed clearly different responses to those of the Antarctic photobionts. The response differences of the photobionts studied point to fundamental differences in life history strategies. Article in Journal/Newspaper Antarc* Antarctic Antarctica Polar Biology Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Polar Biology 42 2 395 405 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The vegetation of many terrestrial habitats across Antarctica is dominated by poikilohydric symbiotic lichens. Terrestrial habitats generally are characterised by extended exposure to desiccation and high irradiation. Physiological adaptation mechanisms of the algal partner (photobiont) are key factors in the successful colonisation of lichens of locations under severe environmental conditions. This study focused on isolated photobionts of the genus Trebouxia, from the continental Antarctic lichens Buellia frigida, Pleopsidium chlorophanum, the maritime Antarctic lichen Umbilicaria antarctica, and the Swedish lichen Fulgensia bracteata from a moderate temperate ecosystem at sea level. The photosystems PS II and PS I and the ratio of linear to cyclic electron transport were studied to elucidate adaptation mechanisms in the physiology of the photobionts in response to desiccation and light stress. The photobionts of the Antarctic lichens demonstrated striking tolerance to the stress conditions studied. Although the photobionts of U. antarctica and P. chlorophanum were genetically identical based on non-coding internally transcribed spacer (ITS), their physiological responses were clearly different, possibly indicating ecotypic differentiation. The photobiont of F. bracteata showed clearly different responses to those of the Antarctic photobionts. The response differences of the photobionts studied point to fundamental differences in life history strategies. |
format |
Article in Journal/Newspaper |
author |
Determeyer-Wiedmann, Nadine Sadowsky, Andres Convey, Peter Ott, Sieglinde |
spellingShingle |
Determeyer-Wiedmann, Nadine Sadowsky, Andres Convey, Peter Ott, Sieglinde Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions |
author_facet |
Determeyer-Wiedmann, Nadine Sadowsky, Andres Convey, Peter Ott, Sieglinde |
author_sort |
Determeyer-Wiedmann, Nadine |
title |
Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions |
title_short |
Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions |
title_full |
Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions |
title_fullStr |
Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions |
title_full_unstemmed |
Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions |
title_sort |
physiological life history strategies of photobionts of lichen species from antarctic and moderate european habitats in response to stressful conditions |
publisher |
Springer |
publishDate |
2019 |
url |
http://nora.nerc.ac.uk/id/eprint/519493/ https://nora.nerc.ac.uk/id/eprint/519493/1/MS%20Determeyer-Wiedmann%20et%20al.%20life%20strategies.pdf https://link.springer.com/article/10.1007/s00300-018-2430-2 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Polar Biology |
genre_facet |
Antarc* Antarctic Antarctica Polar Biology |
op_relation |
https://nora.nerc.ac.uk/id/eprint/519493/1/MS%20Determeyer-Wiedmann%20et%20al.%20life%20strategies.pdf Determeyer-Wiedmann, Nadine; Sadowsky, Andres; Convey, Peter orcid:0000-0001-8497-9903 Ott, Sieglinde. 2019 Physiological life history strategies of photobionts of lichen species from Antarctic and moderate European habitats in response to stressful conditions. Polar Biology, 42 (2). 395-405. https://doi.org/10.1007/s00300-018-2430-2 <https://doi.org/10.1007/s00300-018-2430-2> |
op_doi |
https://doi.org/10.1007/s00300-018-2430-2 |
container_title |
Polar Biology |
container_volume |
42 |
container_issue |
2 |
container_start_page |
395 |
op_container_end_page |
405 |
_version_ |
1766251748365697024 |