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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.


Statistical Parsimony network connecting haplotypes from southern Andean Escallonia species. For each haplotype we concatenated the sequences of trnS-trnG (740 bp), 3′trnV-ndhC (602 bp) intergenic spacers and the ndhF gene (1803 bp). Each circle correspond to a unique haplotype. Dots on lines represent mutational steps.
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plw034-F3: Statistical Parsimony network connecting haplotypes from southern Andean Escallonia species. For each haplotype we concatenated the sequences of trnS-trnG (740 bp), 3′trnV-ndhC (602 bp) intergenic spacers and the ndhF gene (1803 bp). Each circle correspond to a unique haplotype. Dots on lines represent mutational steps.

Mentions: The PCR amplification of intergenic spacers resulted in fragments of 740 bp (trnS-trnG) and 602 bp (trnV-ndhC), and the amplification of ndhF gene (incomplete sequence) resulted in a 1803 bp-fragment. All accessions, including multiple accessions for one species, showed exclusive haplotypes (Fig. 3).Figure 3.


Genetic admixture and lineage separation in a southern Andean plant
Statistical Parsimony network connecting haplotypes from southern Andean Escallonia species. For each haplotype we concatenated the sequences of trnS-trnG (740 bp), 3′trnV-ndhC (602 bp) intergenic spacers and the ndhF gene (1803 bp). Each circle correspond to a unique haplotype. Dots on lines represent mutational steps.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

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

plw034-F3: Statistical Parsimony network connecting haplotypes from southern Andean Escallonia species. For each haplotype we concatenated the sequences of trnS-trnG (740 bp), 3′trnV-ndhC (602 bp) intergenic spacers and the ndhF gene (1803 bp). Each circle correspond to a unique haplotype. Dots on lines represent mutational steps.
Mentions: The PCR amplification of intergenic spacers resulted in fragments of 740 bp (trnS-trnG) and 602 bp (trnV-ndhC), and the amplification of ndhF gene (incomplete sequence) resulted in a 1803 bp-fragment. All accessions, including multiple accessions for one species, showed exclusive haplotypes (Fig. 3).Figure 3.

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.