The rapid radiation of Bomarea (Alstroemeriaceae: Liliales), driven by the rise of the Andes.
Evolution
; 78(2): 221-236, 2024 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-37831628
ABSTRACT
Geological events such as mountain uplift affect how, when, and where species diversify, but measuring those effects is a longstanding challenge. Andean orogeny impacted the evolution of regional biota by creating barriers to gene flow, opening new habitats, and changing local climate. Bâ¢oâ¢mâ¢aâ¢râ¢eâ¢a (Alstroemeriaceae) are tropical plants with (often) small, isolated ranges; in total, Bâ¢oâ¢mâ¢aâ¢râ¢eâ¢a species occur from central Mexico to central Chile. This genus appears to have evolved rapidly and quite recently, and rapid radiations are often challenging to resolve with traditional phylogenetic inference. In this study, we apply phylogenomics-with hundreds of loci, gene-tree-based data curation, and a multispecies-coalescent approach-to infer the phylogeny of Bâ¢oâ¢mâ¢aâ¢râ¢eâ¢a. We use this phylogeny to untangle the potential drivers of diversification and biogeographic history. In particular, we test if Andean orogeny contributed to the diversification of Bâ¢oâ¢mâ¢aâ¢râ¢eâ¢a. We find that Bâ¢oâ¢mâ¢aâ¢râ¢eâ¢a originated in the central Andes during the mid-Miocene, then spread north, following the trajectory of mountain uplift. Furthermore, Andean lineages diversified faster than non-Andean relatives. Bâ¢oâ¢mâ¢aâ¢râ¢eâ¢a thus demonstrates that-at least in some cases-geological change rather than environmental stability has driven high species diversity in a tropical biodiversity hotspot. These results also demonstrate the utility (and danger) of genome-scale data for making macroevolutionary inferences.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Liliales
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article