Geographic distance and landscape ruggedness shape genome-wide divergence and admixture in <i>Leucostele</i> cacti across the Atacama–central Chile biodiversity hotspot
Our study reveals that rugged topography and spatial isolation promote genomic divergence by limiting gene flow and fostering distinct genetic clusters while less rugged terrain facilitates secondary contact and admixture, showing that these barriers remain permeable and reproductive isolation is incomplete. This dual influence of topographic heterogeneity underpins the dynamic evolutionary mosaic observed across the coastal Atacama Desert-central Chile gradient.
Authors
- Sandy Toledo (ORCID: https://orcid.org/0000-0003-3767-4757)
- Marcelo Rosas (ORCID: https://orcid.org/0000-0001-7876-6629)
- José Angel García‐Beltrán (ORCID: https://orcid.org/0000-0002-4920-6021)
- Anita Cisternas‐Fuentes (ORCID: https://orcid.org/0000-0002-8951-0773)
- Pablo C. Guerrero (ORCID: https://orcid.org/0000-0003-1034-1899)
- María Paz Melo-Gaymer
Institutions
- Australian Antarctic Division (AU)
- University of Concepción (CL)
- Universidad de las Américas (NI)
- Instituto Profesional Ipg (CL)
- Institute of Ecology and Biodiversity (CL)
- Instituto Superior de Teologia Aplicada (BR)
- Instituto Forestal
- University of La Serena (CL)
Publication Details
- Journal
- Annals of Botany
- Published
- 2025-12-11
- DOI
- https://doi.org/10.1093/aob/mcaf323
- Primary Topic
- Genetic diversity and population structure
- Type
- article
- Field-Weighted Citation Impact
- 0.00