Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary Islands
Abstract Astydamia latifolia is the only species of the genus Astydamia, which forms an early‐diverging lineage of Apiaceae, subfamily Apioideae. This species is subendemic to the Canary Islands and one of the most representative species of the coastal environments of this archipelago. Astydamia dis...
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Wiley
2024-07-01
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| Series: | Ecology and Evolution |
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| Online Access: | https://doi.org/10.1002/ece3.11624 |
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| author | Alberto J. Coello Pablo Vargas Aitor Alameda‐Martín Emilio Cano Yurena Arjona Mario Fernández‐Mazuecos |
| author_facet | Alberto J. Coello Pablo Vargas Aitor Alameda‐Martín Emilio Cano Yurena Arjona Mario Fernández‐Mazuecos |
| author_sort | Alberto J. Coello |
| collection | DOAJ |
| description | Abstract Astydamia latifolia is the only species of the genus Astydamia, which forms an early‐diverging lineage of Apiaceae, subfamily Apioideae. This species is subendemic to the Canary Islands and one of the most representative species of the coastal environments of this archipelago. Astydamia displays diplochory, that is, diaspores with two long‐distance dispersal (LDD) syndromes. In particular, A. latifolia has both anemochorous and thalassochorous fruit traits (corky and winged mericarps). Although we expect this species to have a high dispersal capacity, there is no genetic study addressing it. The divergence time of this species from its sister taxon is also unknown. In this study, we aimed (i) to unveil the phylogenetic relationships and divergence times of A. latifolia; (ii) to reconstruct its phylogeographic structure across the Canary Islands; and (iii) to estimate the number of inter‐island colonization events. To these ends, we first sequenced the internal transcribed spacer (ITS) region for A. latifolia, reconstructed the phylogenetic relationships of Astydamia and Apiaceae relatives and estimated divergence times. Then, two plastid DNA regions (psaI‐aacD and psbK‐trnS) were sequenced for 158 individuals (from 36 Canarian population and one NW African population) to reconstruct a haplotype network. The recently developed method Phylogeographic Analysis of Island Colonization Events (PAICE) was used to estimate the number of inter‐island colonization events. Results show that A. latifolia is a phylogenetically isolated lineage that diverged from the most closely related genus (Molopospermum) in the Eocene–Miocene. It displays a low plastid DNA diversity (only four haplotypes detected), which is accompanied by a high degree of haplotype sharing between islands and highly linear rarefaction curves of colonization obtained in PAICE. These findings suggest a high colonization ability for this species, most likely related to the availability of two LDD syndromes. |
| format | Article |
| id | doaj-art-75b5cee586fa475c88feb9b83362839e |
| institution | DOAJ |
| issn | 2045-7758 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | Wiley |
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| series | Ecology and Evolution |
| spelling | doaj-art-75b5cee586fa475c88feb9b83362839e2025-08-20T03:15:20ZengWileyEcology and Evolution2045-77582024-07-01147n/an/a10.1002/ece3.11624Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary IslandsAlberto J. Coello0Pablo Vargas1Aitor Alameda‐Martín2Emilio Cano3Yurena Arjona4Mario Fernández‐Mazuecos5Departamento de Biología (Botánica) Universidad Autónoma de Madrid Madrid SpainReal Jardín Botánico (RJB‐CSIC) Madrid SpainReal Jardín Botánico (RJB‐CSIC) Madrid SpainReal Jardín Botánico (RJB‐CSIC) Madrid SpainReal Jardín Botánico (RJB‐CSIC) Madrid SpainDepartamento de Biología (Botánica) Universidad Autónoma de Madrid Madrid SpainAbstract Astydamia latifolia is the only species of the genus Astydamia, which forms an early‐diverging lineage of Apiaceae, subfamily Apioideae. This species is subendemic to the Canary Islands and one of the most representative species of the coastal environments of this archipelago. Astydamia displays diplochory, that is, diaspores with two long‐distance dispersal (LDD) syndromes. In particular, A. latifolia has both anemochorous and thalassochorous fruit traits (corky and winged mericarps). Although we expect this species to have a high dispersal capacity, there is no genetic study addressing it. The divergence time of this species from its sister taxon is also unknown. In this study, we aimed (i) to unveil the phylogenetic relationships and divergence times of A. latifolia; (ii) to reconstruct its phylogeographic structure across the Canary Islands; and (iii) to estimate the number of inter‐island colonization events. To these ends, we first sequenced the internal transcribed spacer (ITS) region for A. latifolia, reconstructed the phylogenetic relationships of Astydamia and Apiaceae relatives and estimated divergence times. Then, two plastid DNA regions (psaI‐aacD and psbK‐trnS) were sequenced for 158 individuals (from 36 Canarian population and one NW African population) to reconstruct a haplotype network. The recently developed method Phylogeographic Analysis of Island Colonization Events (PAICE) was used to estimate the number of inter‐island colonization events. Results show that A. latifolia is a phylogenetically isolated lineage that diverged from the most closely related genus (Molopospermum) in the Eocene–Miocene. It displays a low plastid DNA diversity (only four haplotypes detected), which is accompanied by a high degree of haplotype sharing between islands and highly linear rarefaction curves of colonization obtained in PAICE. These findings suggest a high colonization ability for this species, most likely related to the availability of two LDD syndromes.https://doi.org/10.1002/ece3.11624ApiaceaeAstydamia latifoliaCanary Islandsislands colonizationphylogeography |
| spellingShingle | Alberto J. Coello Pablo Vargas Aitor Alameda‐Martín Emilio Cano Yurena Arjona Mario Fernández‐Mazuecos Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary Islands Ecology and Evolution Apiaceae Astydamia latifolia Canary Islands islands colonization phylogeography |
| title | Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary Islands |
| title_full | Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary Islands |
| title_fullStr | Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary Islands |
| title_full_unstemmed | Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary Islands |
| title_short | Phylogenetic and phylogeographic evidence for the colonization success of the diplochorous Astydamia latifolia across the Canary Islands |
| title_sort | phylogenetic and phylogeographic evidence for the colonization success of the diplochorous astydamia latifolia across the canary islands |
| topic | Apiaceae Astydamia latifolia Canary Islands islands colonization phylogeography |
| url | https://doi.org/10.1002/ece3.11624 |
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