The pioneer lichen Placopsis in maritime Antarctica: Genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time
Since ice-free areas in Antarctica are predicted to increase by up to 25% before the end of this century, lichens such as the genus Placopsis will be important colonizers of these newly available grounds and will still be present in later successional stages of the lichen community. The main symbion...
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ftunivctemuco:oai:repositoriodigital.uct.cl:10925/3626 2023-05-15T13:58:13+02:00 The pioneer lichen Placopsis in maritime Antarctica: Genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time Beck, Andreas Bechteler, Julia Casanova Katny, Angelica Dzhilyanova, Iva 2021-04-30T16:58:22Z http://repositoriodigital.uct.cl/handle/10925/3626 https://doi.org/10.1007/s13199-019-00624-4 en eng SPRINGER SYMBIOSIS,Vol.79,1-24,2019 http://repositoriodigital.uct.cl/handle/10925/3626 doi:10.1007/s13199-019-00624-4 SYMBIOSIS Selectivity Phylogeny Stichococcus Climate Change Haplotypes Article 2021 ftunivctemuco https://doi.org/10.1007/s13199-019-00624-4 2021-05-01T23:51:06Z Since ice-free areas in Antarctica are predicted to increase by up to 25% before the end of this century, lichens such as the genus Placopsis will be important colonizers of these newly available grounds and will still be present in later successional stages of the lichen community. The main symbionts of Placopsis species are examined for 56 specimens collected from the South Shetland Islands, Antarctica using molecular (fungal and algal nrITS, fungal RPB1, algal rbcL sequences) and morphological methods. The specimens were collected from soils with different deglaciation times. Eight uni-algal photobiont cultures were obtained and analysed from two specimens. Placopsis antarctica and P. contortuplicata proved to be monophyletic and are sister species, only the former producing vegetative diaspores (soredia). Both share the same photobiont pool and are lichenized with two closely related species, Stichococcus antarcticus and S. allas. Two haplotypes of S. antarcticus are restricted to areas deglaciated for more than 5000 years and the volcanic Deception Island indicating a shift in the photobionts of Placopsis in the course of the soil and lichen community development. These photobiont haplotypes exhibit different ecological preferences, possibly leading to adaptation of the symbiotic entity to changing environmental conditions. Article in Journal/Newspaper Antarc* Antarctica antarcticus Deception Island South Shetland Islands Repositorio Académico de la Universidad Católica de Temuco (UCT) Deception Island ENVELOPE(-60.633,-60.633,-62.950,-62.950) South Shetland Islands Symbiosis 79 1 1 24 |
institution |
Open Polar |
collection |
Repositorio Académico de la Universidad Católica de Temuco (UCT) |
op_collection_id |
ftunivctemuco |
language |
English |
topic |
Selectivity Phylogeny Stichococcus Climate Change Haplotypes |
spellingShingle |
Selectivity Phylogeny Stichococcus Climate Change Haplotypes Beck, Andreas Bechteler, Julia Casanova Katny, Angelica Dzhilyanova, Iva The pioneer lichen Placopsis in maritime Antarctica: Genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time |
topic_facet |
Selectivity Phylogeny Stichococcus Climate Change Haplotypes |
description |
Since ice-free areas in Antarctica are predicted to increase by up to 25% before the end of this century, lichens such as the genus Placopsis will be important colonizers of these newly available grounds and will still be present in later successional stages of the lichen community. The main symbionts of Placopsis species are examined for 56 specimens collected from the South Shetland Islands, Antarctica using molecular (fungal and algal nrITS, fungal RPB1, algal rbcL sequences) and morphological methods. The specimens were collected from soils with different deglaciation times. Eight uni-algal photobiont cultures were obtained and analysed from two specimens. Placopsis antarctica and P. contortuplicata proved to be monophyletic and are sister species, only the former producing vegetative diaspores (soredia). Both share the same photobiont pool and are lichenized with two closely related species, Stichococcus antarcticus and S. allas. Two haplotypes of S. antarcticus are restricted to areas deglaciated for more than 5000 years and the volcanic Deception Island indicating a shift in the photobionts of Placopsis in the course of the soil and lichen community development. These photobiont haplotypes exhibit different ecological preferences, possibly leading to adaptation of the symbiotic entity to changing environmental conditions. |
format |
Article in Journal/Newspaper |
author |
Beck, Andreas Bechteler, Julia Casanova Katny, Angelica Dzhilyanova, Iva |
author_facet |
Beck, Andreas Bechteler, Julia Casanova Katny, Angelica Dzhilyanova, Iva |
author_sort |
Beck, Andreas |
title |
The pioneer lichen Placopsis in maritime Antarctica: Genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time |
title_short |
The pioneer lichen Placopsis in maritime Antarctica: Genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time |
title_full |
The pioneer lichen Placopsis in maritime Antarctica: Genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time |
title_fullStr |
The pioneer lichen Placopsis in maritime Antarctica: Genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time |
title_full_unstemmed |
The pioneer lichen Placopsis in maritime Antarctica: Genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time |
title_sort |
pioneer lichen placopsis in maritime antarctica: genetic diversity of their mycobionts and green algal symbionts, and their correlation with deglaciation time |
publisher |
SPRINGER |
publishDate |
2021 |
url |
http://repositoriodigital.uct.cl/handle/10925/3626 https://doi.org/10.1007/s13199-019-00624-4 |
long_lat |
ENVELOPE(-60.633,-60.633,-62.950,-62.950) |
geographic |
Deception Island South Shetland Islands |
geographic_facet |
Deception Island South Shetland Islands |
genre |
Antarc* Antarctica antarcticus Deception Island South Shetland Islands |
genre_facet |
Antarc* Antarctica antarcticus Deception Island South Shetland Islands |
op_source |
SYMBIOSIS |
op_relation |
SYMBIOSIS,Vol.79,1-24,2019 http://repositoriodigital.uct.cl/handle/10925/3626 doi:10.1007/s13199-019-00624-4 |
op_doi |
https://doi.org/10.1007/s13199-019-00624-4 |
container_title |
Symbiosis |
container_volume |
79 |
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1 |
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1 |
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24 |
_version_ |
1766266386330419200 |