Perpendicular axes of differentiation generated by mitochondrial introgression

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Perpendicular axes of differentiation generated by mitochondrial introgression. / Morales, Hernán E.; Sunnucks, Paul; Joseph, Leo; Pavlova, Alexandra.

In: Molecular Ecology, 2017.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Morales, HE, Sunnucks, P, Joseph, L & Pavlova, A 2017, 'Perpendicular axes of differentiation generated by mitochondrial introgression', Molecular Ecology. https://doi.org/10.1111/mec.14114

APA

Morales, H. E., Sunnucks, P., Joseph, L., & Pavlova, A. (2017). Perpendicular axes of differentiation generated by mitochondrial introgression. Molecular Ecology. https://doi.org/10.1111/mec.14114

Vancouver

Morales HE, Sunnucks P, Joseph L, Pavlova A. Perpendicular axes of differentiation generated by mitochondrial introgression. Molecular Ecology. 2017. https://doi.org/10.1111/mec.14114

Author

Morales, Hernán E. ; Sunnucks, Paul ; Joseph, Leo ; Pavlova, Alexandra. / Perpendicular axes of differentiation generated by mitochondrial introgression. In: Molecular Ecology. 2017.

Bibtex

@article{0cc5346840534f52ad90eddc8f017e38,
title = "Perpendicular axes of differentiation generated by mitochondrial introgression",
abstract = "Differential introgression of mitochondrial vs. nuclear DNA generates discordant pat- terns of geographic variation and can promote population divergence and speciation. We examined a potential case of mitochondrial introgression leading to two perpendic- ular axes of differentiation. The Eastern Yellow Robin Eopsaltria australis, a wide- spread Australian bird, shows a deep mitochondrial split that is perpendicular to north–south nuclear DNA and plumage colour differentiation. We propose a scenario to explain this pattern: (i) first, both nuclear and mitochondrial genomes differentiated in concert during north–south population divergence; (ii) later, their histories discon- nected after two mitochondrial introgression events resulting in a deep mitochondrial split perpendicular to the nuclear DNA structure. We explored this scenario by coales- cent modelling of ten mitochondrial genes and 400 nuclear DNA loci. Initial mitochon- drial and nuclear genome divergences were estimated to have occurred in the early Pleistocene, consistent with the proposed scenario. Subsequent climatic transitions may have driven later mitochondrial introgression. We consider neutral introgression unlikely and instead propose that the evidence is more consistent with adaptive mito- chondrial introgression and selection against incompatible mitochondrial-nuclear com- binations. This likely generated an axis of coastal-inland mitochondrial differentiation in the face of nuclear gene flow, perpendicular to the initial north–south axis of differentiation (reflected in genomewide nuclear DNA and colour variation).",
author = "Morales, {Hern{\'a}n E.} and Paul Sunnucks and Leo Joseph and Alexandra Pavlova",
year = "2017",
doi = "10.1111/mec.14114",
language = "Udefineret/Ukendt",
journal = "Molecular Ecology",
issn = "0962-1083",
publisher = "Wiley-Blackwell",

}

RIS

TY - JOUR

T1 - Perpendicular axes of differentiation generated by mitochondrial introgression

AU - Morales, Hernán E.

AU - Sunnucks, Paul

AU - Joseph, Leo

AU - Pavlova, Alexandra

PY - 2017

Y1 - 2017

N2 - Differential introgression of mitochondrial vs. nuclear DNA generates discordant pat- terns of geographic variation and can promote population divergence and speciation. We examined a potential case of mitochondrial introgression leading to two perpendic- ular axes of differentiation. The Eastern Yellow Robin Eopsaltria australis, a wide- spread Australian bird, shows a deep mitochondrial split that is perpendicular to north–south nuclear DNA and plumage colour differentiation. We propose a scenario to explain this pattern: (i) first, both nuclear and mitochondrial genomes differentiated in concert during north–south population divergence; (ii) later, their histories discon- nected after two mitochondrial introgression events resulting in a deep mitochondrial split perpendicular to the nuclear DNA structure. We explored this scenario by coales- cent modelling of ten mitochondrial genes and 400 nuclear DNA loci. Initial mitochon- drial and nuclear genome divergences were estimated to have occurred in the early Pleistocene, consistent with the proposed scenario. Subsequent climatic transitions may have driven later mitochondrial introgression. We consider neutral introgression unlikely and instead propose that the evidence is more consistent with adaptive mito- chondrial introgression and selection against incompatible mitochondrial-nuclear com- binations. This likely generated an axis of coastal-inland mitochondrial differentiation in the face of nuclear gene flow, perpendicular to the initial north–south axis of differentiation (reflected in genomewide nuclear DNA and colour variation).

AB - Differential introgression of mitochondrial vs. nuclear DNA generates discordant pat- terns of geographic variation and can promote population divergence and speciation. We examined a potential case of mitochondrial introgression leading to two perpendic- ular axes of differentiation. The Eastern Yellow Robin Eopsaltria australis, a wide- spread Australian bird, shows a deep mitochondrial split that is perpendicular to north–south nuclear DNA and plumage colour differentiation. We propose a scenario to explain this pattern: (i) first, both nuclear and mitochondrial genomes differentiated in concert during north–south population divergence; (ii) later, their histories discon- nected after two mitochondrial introgression events resulting in a deep mitochondrial split perpendicular to the nuclear DNA structure. We explored this scenario by coales- cent modelling of ten mitochondrial genes and 400 nuclear DNA loci. Initial mitochon- drial and nuclear genome divergences were estimated to have occurred in the early Pleistocene, consistent with the proposed scenario. Subsequent climatic transitions may have driven later mitochondrial introgression. We consider neutral introgression unlikely and instead propose that the evidence is more consistent with adaptive mito- chondrial introgression and selection against incompatible mitochondrial-nuclear com- binations. This likely generated an axis of coastal-inland mitochondrial differentiation in the face of nuclear gene flow, perpendicular to the initial north–south axis of differentiation (reflected in genomewide nuclear DNA and colour variation).

U2 - 10.1111/mec.14114

DO - 10.1111/mec.14114

M3 - Tidsskriftartikel

JO - Molecular Ecology

JF - Molecular Ecology

SN - 0962-1083

ER -

ID: 246096240