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Geographic distance and landscape ruggedness shape genome-wide divergence and admixture in Leucostele cacti across the Atacama-central Chile biodiversity hotspot.

Annals of botany - 21 Apr 2026

García-Beltrán José Angel, Toledo Sandy, Melo-Gaymer María Paz, Rosas Marcelo R, Cisternas-Fuentes Anita, Guerrero Pablo C

Abstract excerpt

BACKGROUND AND OBJECTIVES: The hyperarid-semiarid gradient of the western Andes, from the coastal Atacama Desert to central Mediterranean Chile, hosts exceptional plant endemism driven by palaeoclimatic oscillations, rugged topography and long-term isolation. Here, we use the columnar cactus genus Leucostele as a model to (1) quantify the influence of geographic isolation and topographic heterogeneity on...

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PMID: 41385407
DOI: 10.1093/aob/mcaf323
PMCID: PMC13095892

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