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Genetic admixture and lineage separation in a southern Andean plant

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ABSTRACT

Mountain orogeny has been a major factor in plant evolution in all continents by changing the landscape and climate, creating new habitats and ecological opportunities. In this study we found that diversity in two southern Andean Escallonia species is geographically structured and there is a deep divergence between infraspecific groups that could be associated with ancient evolutionary events like orogeny. We also found evidence of admixture, likely the result of hybridization at the margins of the parental species' distribution range.

No MeSH data available.


Inflorescences. (A) E. rubra (265). (B) E. alpina var. alpina (266). (C) E. alpina var. carmelitana (340). (D). IM population (229). Typical habitat. (E) E. rubra (224), Lago Carilaufquen. (F) E. alpina (234), Chorrillo Los Perros, Estancia Cristina.
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plw034-F2: Inflorescences. (A) E. rubra (265). (B) E. alpina var. alpina (266). (C) E. alpina var. carmelitana (340). (D). IM population (229). Typical habitat. (E) E. rubra (224), Lago Carilaufquen. (F) E. alpina (234), Chorrillo Los Perros, Estancia Cristina.

Mentions: Morphological examination allowed us to characterize leaves of E. alpina var. carmelitana as narrowly obovate to spatulate, lanceolate, tapering gradually to the base, with the apex acute to obtuse, rarely truncate (see Fig. 2C), while those of the type variety are mostly obovate, sometimes suborbicular-cuneate or spatulate-lanceolate, with the apex typically obtuse, sometimes subacute, rarely truncate or invaginated (see Fig. 2B).


Genetic admixture and lineage separation in a southern Andean plant
Inflorescences. (A) E. rubra (265). (B) E. alpina var. alpina (266). (C) E. alpina var. carmelitana (340). (D). IM population (229). Typical habitat. (E) E. rubra (224), Lago Carilaufquen. (F) E. alpina (234), Chorrillo Los Perros, Estancia Cristina.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4940511&req=5

plw034-F2: Inflorescences. (A) E. rubra (265). (B) E. alpina var. alpina (266). (C) E. alpina var. carmelitana (340). (D). IM population (229). Typical habitat. (E) E. rubra (224), Lago Carilaufquen. (F) E. alpina (234), Chorrillo Los Perros, Estancia Cristina.
Mentions: Morphological examination allowed us to characterize leaves of E. alpina var. carmelitana as narrowly obovate to spatulate, lanceolate, tapering gradually to the base, with the apex acute to obtuse, rarely truncate (see Fig. 2C), while those of the type variety are mostly obovate, sometimes suborbicular-cuneate or spatulate-lanceolate, with the apex typically obtuse, sometimes subacute, rarely truncate or invaginated (see Fig. 2B).

View Article: PubMed Central - PubMed

ABSTRACT

Mountain orogeny has been a major factor in plant evolution in all continents by changing the landscape and climate, creating new habitats and ecological opportunities. In this study we found that diversity in two southern Andean Escallonia species is geographically structured and there is a deep divergence between infraspecific groups that could be associated with ancient evolutionary events like orogeny. We also found evidence of admixture, likely the result of hybridization at the margins of the parental species' distribution range.

No MeSH data available.