Genome Size in the Arenaria ciliata Species Complex (Caryophyllaceae), with Special Focus on A. ciliata subsp. bernensis , a Narrow Endemic of the Swiss Northern Alps
The genus Arenaria (Caryophyllaceae) comprises approximately 300 species worldwide; however, to date, just six of these taxa have been investigated in terms of their genome size. The main subject of the present study is the A. ciliata species complex, with special focus on A. ciliata subsp. bernensi...
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MDPI AG
2022
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Online Access: | https://doi.org/10.3390/plants11243489 https://doaj.org/article/6a5b4ab63ea34c7686fef88f0a200f0d |
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ftdoajarticles:oai:doaj.org/article:6a5b4ab63ea34c7686fef88f0a200f0d 2023-05-15T15:12:26+02:00 Genome Size in the Arenaria ciliata Species Complex (Caryophyllaceae), with Special Focus on A. ciliata subsp. bernensis , a Narrow Endemic of the Swiss Northern Alps Gregor Kozlowski Yann Fragnière Benoît Clément Conor Meade 2022-12-01T00:00:00Z https://doi.org/10.3390/plants11243489 https://doaj.org/article/6a5b4ab63ea34c7686fef88f0a200f0d EN eng MDPI AG https://www.mdpi.com/2223-7747/11/24/3489 https://doaj.org/toc/2223-7747 doi:10.3390/plants11243489 2223-7747 https://doaj.org/article/6a5b4ab63ea34c7686fef88f0a200f0d Plants, Vol 11, Iss 3489, p 3489 (2022) arctic-alpine plants disjunctions flow cytometry narrow endemism polyploidy Botany QK1-989 article 2022 ftdoajarticles https://doi.org/10.3390/plants11243489 2022-12-30T19:30:36Z The genus Arenaria (Caryophyllaceae) comprises approximately 300 species worldwide; however, to date, just six of these taxa have been investigated in terms of their genome size. The main subject of the present study is the A. ciliata species complex, with special focus on A. ciliata subsp. bernensis , an endemic plant occurring in the Swiss Northern Alps. Altogether, 16 populations and 77 individuals of the A. ciliata complex have been sampled and their genome sizes were estimated using flow cytometry, including A. ciliata subsp. bernensis , A. ciliata s.str., A. multicaulis , and A. gothica . The Arenaria ciliata subsp. bernensis shows the highest 2c-value of 6.91 pg of DNA, while A. gothica showed 2c = 3.69 pg, A. ciliata s.str. 2c = 1.71 pg, and A. multicaulis 2c = 1.57 pg. These results confirm the very high ploidy level of A. ciliata subsp. bernensis (2n = 20x = 200) compared to other taxa in the complex, as detected by our chromosome counting and previously documented by earlier work. The genome size and, thus, also the ploidy level, is stable across the whole distribution area of this taxon. The present study delivers additional support for the taxonomic distinctiveness of the high alpine endemic A. ciliata subsp. bernensis , which strongly aligns with other differences in morphology, phylogeny, phenology, ecology, and plant communities, described previously. In affirming these differences, further support now exists to re-consider the species status of this taxon. Upgrading to full species rank would significantly improve the conservation prospects for this taxon, as, because of its precise ecological adaptation to alpine summit habitats, the A. ciliata subsp. bernensis faces acute threats from accelerated climate warming. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Plants 11 24 3489 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
arctic-alpine plants disjunctions flow cytometry narrow endemism polyploidy Botany QK1-989 |
spellingShingle |
arctic-alpine plants disjunctions flow cytometry narrow endemism polyploidy Botany QK1-989 Gregor Kozlowski Yann Fragnière Benoît Clément Conor Meade Genome Size in the Arenaria ciliata Species Complex (Caryophyllaceae), with Special Focus on A. ciliata subsp. bernensis , a Narrow Endemic of the Swiss Northern Alps |
topic_facet |
arctic-alpine plants disjunctions flow cytometry narrow endemism polyploidy Botany QK1-989 |
description |
The genus Arenaria (Caryophyllaceae) comprises approximately 300 species worldwide; however, to date, just six of these taxa have been investigated in terms of their genome size. The main subject of the present study is the A. ciliata species complex, with special focus on A. ciliata subsp. bernensis , an endemic plant occurring in the Swiss Northern Alps. Altogether, 16 populations and 77 individuals of the A. ciliata complex have been sampled and their genome sizes were estimated using flow cytometry, including A. ciliata subsp. bernensis , A. ciliata s.str., A. multicaulis , and A. gothica . The Arenaria ciliata subsp. bernensis shows the highest 2c-value of 6.91 pg of DNA, while A. gothica showed 2c = 3.69 pg, A. ciliata s.str. 2c = 1.71 pg, and A. multicaulis 2c = 1.57 pg. These results confirm the very high ploidy level of A. ciliata subsp. bernensis (2n = 20x = 200) compared to other taxa in the complex, as detected by our chromosome counting and previously documented by earlier work. The genome size and, thus, also the ploidy level, is stable across the whole distribution area of this taxon. The present study delivers additional support for the taxonomic distinctiveness of the high alpine endemic A. ciliata subsp. bernensis , which strongly aligns with other differences in morphology, phylogeny, phenology, ecology, and plant communities, described previously. In affirming these differences, further support now exists to re-consider the species status of this taxon. Upgrading to full species rank would significantly improve the conservation prospects for this taxon, as, because of its precise ecological adaptation to alpine summit habitats, the A. ciliata subsp. bernensis faces acute threats from accelerated climate warming. |
format |
Article in Journal/Newspaper |
author |
Gregor Kozlowski Yann Fragnière Benoît Clément Conor Meade |
author_facet |
Gregor Kozlowski Yann Fragnière Benoît Clément Conor Meade |
author_sort |
Gregor Kozlowski |
title |
Genome Size in the Arenaria ciliata Species Complex (Caryophyllaceae), with Special Focus on A. ciliata subsp. bernensis , a Narrow Endemic of the Swiss Northern Alps |
title_short |
Genome Size in the Arenaria ciliata Species Complex (Caryophyllaceae), with Special Focus on A. ciliata subsp. bernensis , a Narrow Endemic of the Swiss Northern Alps |
title_full |
Genome Size in the Arenaria ciliata Species Complex (Caryophyllaceae), with Special Focus on A. ciliata subsp. bernensis , a Narrow Endemic of the Swiss Northern Alps |
title_fullStr |
Genome Size in the Arenaria ciliata Species Complex (Caryophyllaceae), with Special Focus on A. ciliata subsp. bernensis , a Narrow Endemic of the Swiss Northern Alps |
title_full_unstemmed |
Genome Size in the Arenaria ciliata Species Complex (Caryophyllaceae), with Special Focus on A. ciliata subsp. bernensis , a Narrow Endemic of the Swiss Northern Alps |
title_sort |
genome size in the arenaria ciliata species complex (caryophyllaceae), with special focus on a. ciliata subsp. bernensis , a narrow endemic of the swiss northern alps |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/plants11243489 https://doaj.org/article/6a5b4ab63ea34c7686fef88f0a200f0d |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Plants, Vol 11, Iss 3489, p 3489 (2022) |
op_relation |
https://www.mdpi.com/2223-7747/11/24/3489 https://doaj.org/toc/2223-7747 doi:10.3390/plants11243489 2223-7747 https://doaj.org/article/6a5b4ab63ea34c7686fef88f0a200f0d |
op_doi |
https://doi.org/10.3390/plants11243489 |
container_title |
Plants |
container_volume |
11 |
container_issue |
24 |
container_start_page |
3489 |
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1766343111397605376 |