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Geographic genetic structure of Iberian columbines (gen. Aquilegia)

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posted on 2023-06-09, 12:17 authored by Jose L Garrido, Julio M Alcantara, Pedro J Rey, Monica Medrano, Javier Guitian, Maria Clara CastellanosMaria Clara Castellanos, Jesus M Bastida, Rafael Jaime, Carlos M Herrera
Southern European columbines (genus Aquilegia)are involved in active processes of diversification, and the Iberian Peninsula offers a privileged observatory to witness the process. Studies on Iberian columbines have provided significant advances on species diversification,but we still lack a complete perspective of the genetic diversification in the Iberian scenario. This work explores how genetic diversity of the genus Aquilegia is geographically structured across the Iberian Peninsula. We used Bayesian clustering methods, principal coordinates analyses, and NJ phenograms to assess the genetic relationships among 285 individuals from 62 locations and detect the main lineages. Genetic diversity of Iberian columbines consists of five geographically structured lineages, corresponding to different Iberian taxa. Differentiation among lineages shows particularly complex admixture patterns at Northeast and highly homogeneous toward Northwest and Southeast. This geographic genetic structure suggests the existence of incomplete lineage sorting and interspecific hybridization as could be expected in recent processes of diversification under the influence of quaternary postglacial migrations. This scenario is consistent with what is proposed by the most recent studies on European and Iberian columbines, which point to geographic isolation and divergent selection by habitat specialization as the main diversification drivers of the Iberian Aquilegia complex.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Plant Systematics and Evolution

ISSN

0378-2697

Publisher

Springer Verlag

Issue

9

Volume

303

Page range

1145-1160

Department affiliated with

  • Evolution, Behaviour and Environment Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-02-26

First Open Access (FOA) Date

2018-06-09

First Compliant Deposit (FCD) Date

2018-02-25

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