Amphitropical variation of the algal partners of Pseudephebe (Parmeliaceae, lichenized fungi)
Lichens are present in most terrestrial ecosystems on Earth and colonize extreme habitats, where vascular plants are unable to thrive, due to unique properties of the fungal-algal symbiosis. Here, we explored the phylogeographic structure of green algae engaged in symbiosis with species in the genus...
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Online Access: | http://hdl.handle.net/10261/233159 https://doi.org/10.1007/s13199-020-00709-5 |
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ftcsic:oai:digital.csic.es:10261/233159 2024-02-11T09:56:16+01:00 Amphitropical variation of the algal partners of Pseudephebe (Parmeliaceae, lichenized fungi) Garrido-Benavent, Isaac Pérez-Ortega, Sergio Ríos, Asunción de los Fernández-Mendoza, F. 2020 http://hdl.handle.net/10261/233159 https://doi.org/10.1007/s13199-020-00709-5 unknown Balaban Publishers http://dx.doi.org/10.1007/s13199-020-00709-5 Sí doi:10.1007/s13199-020-00709-5 issn: 0334-5114 Symbiosis 82: 35- 48 (2020) http://hdl.handle.net/10261/233159 none artículo http://purl.org/coar/resource_type/c_6501 2020 ftcsic https://doi.org/10.1007/s13199-020-00709-5 2024-01-16T11:04:12Z Lichens are present in most terrestrial ecosystems on Earth and colonize extreme habitats, where vascular plants are unable to thrive, due to unique properties of the fungal-algal symbiosis. Here, we explored the phylogeographic structure of green algae engaged in symbiosis with species in the genus Pseudephebe (Parmeliaceae). These often form deep brown to blackish fruticose thalli on acidic rocks, and have partially overlapping distributions: P. minuscula is bipolar and co-occurs with P. pubescens in Europe. Based on a broad sampling, including the Arctic and Antarctica, we focused on photobionts (1) to identify genetic lineages and their phylogenetic assignment, (2) to infer the haplotype distribution in relation with geography and the mycobiont¿s identity, and (3) to evaluate spatial genetic structure and polymorphism. Results revealed three Trebouxia clade S lineages (Trebouxia S02, T. suecica and T. angustilobata) associated to Pseudephebe species, with predominant haplotypes distributed throughout the entire geographic distribution, and some, less frequent, shared between widely distant localities. Photobiont switching was evident in the Mediterranean region, and algal co-occurrence was frequent in both mycobionts, which shared the same set of photobionts; this could explain, at least partially, their overlapping distribution. Furthermore, genetic structure was influenced by geography given the substantial percentages of genetic variation (ca. 25¿50%) explained by the different delimited eco¿/biogeographic regions. In Continental Antarctica, mycobionts showed a high specialization towards the photobionts, which are probably endemic of this climatically extreme region. Taken together, our findings provide further insight about the processes shaping lichen biogeography. Article in Journal/Newspaper Antarc* Antarctica Arctic Digital.CSIC (Spanish National Research Council) Arctic Symbiosis 82 1-2 35 48 |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
description |
Lichens are present in most terrestrial ecosystems on Earth and colonize extreme habitats, where vascular plants are unable to thrive, due to unique properties of the fungal-algal symbiosis. Here, we explored the phylogeographic structure of green algae engaged in symbiosis with species in the genus Pseudephebe (Parmeliaceae). These often form deep brown to blackish fruticose thalli on acidic rocks, and have partially overlapping distributions: P. minuscula is bipolar and co-occurs with P. pubescens in Europe. Based on a broad sampling, including the Arctic and Antarctica, we focused on photobionts (1) to identify genetic lineages and their phylogenetic assignment, (2) to infer the haplotype distribution in relation with geography and the mycobiont¿s identity, and (3) to evaluate spatial genetic structure and polymorphism. Results revealed three Trebouxia clade S lineages (Trebouxia S02, T. suecica and T. angustilobata) associated to Pseudephebe species, with predominant haplotypes distributed throughout the entire geographic distribution, and some, less frequent, shared between widely distant localities. Photobiont switching was evident in the Mediterranean region, and algal co-occurrence was frequent in both mycobionts, which shared the same set of photobionts; this could explain, at least partially, their overlapping distribution. Furthermore, genetic structure was influenced by geography given the substantial percentages of genetic variation (ca. 25¿50%) explained by the different delimited eco¿/biogeographic regions. In Continental Antarctica, mycobionts showed a high specialization towards the photobionts, which are probably endemic of this climatically extreme region. Taken together, our findings provide further insight about the processes shaping lichen biogeography. |
format |
Article in Journal/Newspaper |
author |
Garrido-Benavent, Isaac Pérez-Ortega, Sergio Ríos, Asunción de los Fernández-Mendoza, F. |
spellingShingle |
Garrido-Benavent, Isaac Pérez-Ortega, Sergio Ríos, Asunción de los Fernández-Mendoza, F. Amphitropical variation of the algal partners of Pseudephebe (Parmeliaceae, lichenized fungi) |
author_facet |
Garrido-Benavent, Isaac Pérez-Ortega, Sergio Ríos, Asunción de los Fernández-Mendoza, F. |
author_sort |
Garrido-Benavent, Isaac |
title |
Amphitropical variation of the algal partners of Pseudephebe (Parmeliaceae, lichenized fungi) |
title_short |
Amphitropical variation of the algal partners of Pseudephebe (Parmeliaceae, lichenized fungi) |
title_full |
Amphitropical variation of the algal partners of Pseudephebe (Parmeliaceae, lichenized fungi) |
title_fullStr |
Amphitropical variation of the algal partners of Pseudephebe (Parmeliaceae, lichenized fungi) |
title_full_unstemmed |
Amphitropical variation of the algal partners of Pseudephebe (Parmeliaceae, lichenized fungi) |
title_sort |
amphitropical variation of the algal partners of pseudephebe (parmeliaceae, lichenized fungi) |
publisher |
Balaban Publishers |
publishDate |
2020 |
url |
http://hdl.handle.net/10261/233159 https://doi.org/10.1007/s13199-020-00709-5 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Antarc* Antarctica Arctic |
genre_facet |
Antarc* Antarctica Arctic |
op_relation |
http://dx.doi.org/10.1007/s13199-020-00709-5 Sí doi:10.1007/s13199-020-00709-5 issn: 0334-5114 Symbiosis 82: 35- 48 (2020) http://hdl.handle.net/10261/233159 |
op_rights |
none |
op_doi |
https://doi.org/10.1007/s13199-020-00709-5 |
container_title |
Symbiosis |
container_volume |
82 |
container_issue |
1-2 |
container_start_page |
35 |
op_container_end_page |
48 |
_version_ |
1790601913598738432 |