[article]
| Titre : |
Little hope for the polyploid endemic Pyrenean Larkspur (Delphinium montanum): Evidences from population genomics and Ecological Niche Modeling |
| Type de document : |
Imprimé |
| Auteurs : |
Pascaline Salvado ; Pere Aymerich Boixader ; Josep Parera ; Albert Vila Bonfill ; Maria Martin ; Céline Quélénnec ; Jean Marc Lewin ; Valérie Delorme-Hinoux ; Joris A. M. Bertrand |
| Année de publication : |
2022 |
| Article en page(s) : |
1-13 |
| Langues : |
Anglais (eng) |
| Catégories : |
[CBNPMP-Thématique] Généralités en systématique, génétique et amélioration des plantes
|
| Résumé : |
Species endemic to restricted geographical ranges represent a particular conservation issue, be it for their heritage interest. In a context of global change, this is particularly the case for plants which belong to high-mountain ecosystems and, because of their ecological requirements, are doomed to survive or disappear on their “sky islands”. The Pyrenean Larkspur (Delphinium montanum, Ranunculaceae) is endemic to the Eastern part of the Pyrenees (France and Spain). It is now only observable at a dozen of localities and some populations show signs of decline, such as a recurrent lack of flowering. Implementing population genomics approach (e.g., RAD-seq like) is particularly useful to understand genomic patterns of diversity and differentiation in order to provide recommendations in term of conservation. However, it remains challenging for species such as D. montanum that are autotetraploid with a large genome size (1C-value >10 pg) as most methods currently available were developed for diploid species. A Bayesian framework able to call genotypes with uncertainty allowed us to assess genetic diversity and population structure in this system. Our results show evidence for inbreeding (mean GIS = 0.361) within all the populations and substantial population structure (mean GST = 0.403) at the metapopulation level. In addition to a lack of connectivity between populations, spatial projections of Ecological Niche Modeling (ENM) analyses under different climatic scenarios predict a dramatic decrease of suitable habitat for D. montanum in the future. Based on these results, we discuss the relevance and feasibility of different conservation measures. |
| Lien pérenne : |
DOI : 10.1002/ece3.8711  |
| Permalink : |
https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=147439 |
in Ecology and evolution > 12 (2022) . - 1-13
Salvado, Pascaline, Boixader, Pere Aymerich, Parera, Josep, Bonfill, Albert Vila, Martin, Maria, Quélénnec, Céline, Lewin, Jean Marc, Delorme-Hinoux, Valérie, Bertrand, Joris A. M.
2022
Little hope for the polyploid endemic Pyrenean Larkspur (Delphinium montanum): Evidences from population genomics and Ecological Niche Modeling.
Ecology and evolution, 12: 1-13.
|
Little hope for the polyploid endemic Pyrenean Larkspur (Delphinium montanum): Evidences from population genomics and Ecological Niche Modeling in Ecology and evolution, 12 (2022)
