Phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species
Aim: Historical biogeography of the Antarctic terrestrial biota remains poorly studied and understood. We aim to advance this through a range-wide, multilocus analysis of a pan-Antarctic moss species, in the context of its age, range dynamics, phylogeographical structure, and location of possible lo...
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ftzenodo:oai:zenodo.org:6991009 2023-05-15T13:55:24+02:00 Phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species Saługa, Marta Ochyra, Ryszard Ronikier, Michał 2022-08-12 https://zenodo.org/record/6991009 https://doi.org/10.5061/dryad.h18931zp3 unknown https://zenodo.org/communities/dryad https://zenodo.org/record/6991009 https://doi.org/10.5061/dryad.h18931zp3 oai:zenodo.org:6991009 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Syntrichia sarconeurum Syntrichia lithophila Sanger sequencing Antarctica Phylogeography info:eu-repo/semantics/other dataset 2022 ftzenodo https://doi.org/10.5061/dryad.h18931zp3 2023-03-10T18:37:06Z Aim: Historical biogeography of the Antarctic terrestrial biota remains poorly studied and understood. We aim to advance this through a range-wide, multilocus analysis of a pan-Antarctic moss species, in the context of its age, range dynamics, phylogeographical structure, and location of possible long-term refugia. Location: Continental and maritime Antarctic, South America (Patagonia), Australasia. Taxon: Syntrichia sarconeurum Ochyra & R.H. Zander (Pottiaceae). Methods: We used a comprehensive, range-wide and taxonomically-informed sampling, and multilocus sequencing of nuclear and plastid DNA regions. Temporal evolutionary framework, regional genetic diversification and diversity were assessed with phylogenetic and phylogeographic reconstructions, molecular dating, haplotype networks, mismatch analysis, and S-DIVA reconstruction of past events and ancestral areas. Results: Intercontinental disjunction between Australia and Antarctica/S. America was dated to 3.77 Ma, while diversification of extant Syntrichia sarconeurum lineages had taken place since roughly 1.36 Ma. Antarctic populations contained two high-frequency, allopatric cpDNA haplotypes, which highlighted separation of the continental populations. ITS data showed higher diversification and revealed three main lineages with a main genetic break mostly concordant with plastid data. ITS also showed contrasting diversity between the Antarctic continent and maritime Antarctic/Patagonia. Main conclusions: Age of the Antarctic range of Syntrichia sarconeurum potentially reaches back to mid-Pliocene, while diversification of extant genetic lineages was linked with recurrent macroenvironmental changes of the Pleistocene. Significant phylogeographical structure displays a major genetic break, which coincides with a known boundary in the terrestrial biota and suggests constrained population connectivity. S. sarconeurum persisted in situ over several glacial periods in refugia both in the peripheral maritime Antarctic and within the Antarctic continent. ... Dataset Antarc* Antarctic Antarctica Zenodo Antarctic The Antarctic Patagonia |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
topic |
Syntrichia sarconeurum Syntrichia lithophila Sanger sequencing Antarctica Phylogeography |
spellingShingle |
Syntrichia sarconeurum Syntrichia lithophila Sanger sequencing Antarctica Phylogeography Saługa, Marta Ochyra, Ryszard Ronikier, Michał Phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species |
topic_facet |
Syntrichia sarconeurum Syntrichia lithophila Sanger sequencing Antarctica Phylogeography |
description |
Aim: Historical biogeography of the Antarctic terrestrial biota remains poorly studied and understood. We aim to advance this through a range-wide, multilocus analysis of a pan-Antarctic moss species, in the context of its age, range dynamics, phylogeographical structure, and location of possible long-term refugia. Location: Continental and maritime Antarctic, South America (Patagonia), Australasia. Taxon: Syntrichia sarconeurum Ochyra & R.H. Zander (Pottiaceae). Methods: We used a comprehensive, range-wide and taxonomically-informed sampling, and multilocus sequencing of nuclear and plastid DNA regions. Temporal evolutionary framework, regional genetic diversification and diversity were assessed with phylogenetic and phylogeographic reconstructions, molecular dating, haplotype networks, mismatch analysis, and S-DIVA reconstruction of past events and ancestral areas. Results: Intercontinental disjunction between Australia and Antarctica/S. America was dated to 3.77 Ma, while diversification of extant Syntrichia sarconeurum lineages had taken place since roughly 1.36 Ma. Antarctic populations contained two high-frequency, allopatric cpDNA haplotypes, which highlighted separation of the continental populations. ITS data showed higher diversification and revealed three main lineages with a main genetic break mostly concordant with plastid data. ITS also showed contrasting diversity between the Antarctic continent and maritime Antarctic/Patagonia. Main conclusions: Age of the Antarctic range of Syntrichia sarconeurum potentially reaches back to mid-Pliocene, while diversification of extant genetic lineages was linked with recurrent macroenvironmental changes of the Pleistocene. Significant phylogeographical structure displays a major genetic break, which coincides with a known boundary in the terrestrial biota and suggests constrained population connectivity. S. sarconeurum persisted in situ over several glacial periods in refugia both in the peripheral maritime Antarctic and within the Antarctic continent. ... |
format |
Dataset |
author |
Saługa, Marta Ochyra, Ryszard Ronikier, Michał |
author_facet |
Saługa, Marta Ochyra, Ryszard Ronikier, Michał |
author_sort |
Saługa, Marta |
title |
Phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species |
title_short |
Phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species |
title_full |
Phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species |
title_fullStr |
Phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species |
title_full_unstemmed |
Phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species |
title_sort |
phylogeographical break and limited connectivity between multiple refugia in panantarctic moss species |
publishDate |
2022 |
url |
https://zenodo.org/record/6991009 https://doi.org/10.5061/dryad.h18931zp3 |
geographic |
Antarctic The Antarctic Patagonia |
geographic_facet |
Antarctic The Antarctic Patagonia |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://zenodo.org/communities/dryad https://zenodo.org/record/6991009 https://doi.org/10.5061/dryad.h18931zp3 oai:zenodo.org:6991009 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.h18931zp3 |
_version_ |
1766262010540982272 |