Rapid Divergence Followed by Adaptation to Contrasting Ecological Niches of Two Closely Related Columbine SpeciesAquilegia japonicaandA. oxysepala

Elucidating the mechanisms underlying the genetic divergence between closely related species is crucial to understanding the origin and evolution of biodiversity. The genus Aquilegia L. has undergone rapid adaptive radiation, generating about 70 well-recognized species that are specialized to distinct habitats and pollinators. In this study, to address the underlying evolutionary mechanisms that drive the genetic divergence, we analyzed the...