The evolutionary and ecological implications of mito nuclear epistasis
The main hypothesis of the proposed research is that, contrary to common and long-standing belief, mitochondrial genetic variation is functional and plays a key role in evolutionary adaptation. I suggest that a novel understanding...
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30/09/2017
UU
186K€
Presupuesto del proyecto: 186K€
Líder del proyecto
UPPSALA UNIVERSITET
No se ha especificado una descripción o un objeto social para esta compañía.
TRL
4-5
Fecha límite participación
Sin fecha límite de participación.
Financiación
concedida
El organismo H2020 notifico la concesión del proyecto
el día 2017-09-30
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Información proyecto MITONUC
Duración del proyecto: 31 meses
Fecha Inicio: 2015-02-18
Fecha Fin: 2017-09-30
Líder del proyecto
UPPSALA UNIVERSITET
No se ha especificado una descripción o un objeto social para esta compañía.
TRL
4-5
Presupuesto del proyecto
186K€
Fecha límite de participación
Sin fecha límite de participación.
Descripción del proyecto
The main hypothesis of the proposed research is that, contrary to common and long-standing belief, mitochondrial genetic variation is functional and plays a key role in evolutionary adaptation. I suggest that a novel understanding of selection on mtDNA can derive from simultaneously considering sex-specific selection and genetic interactions between mtDNA and nDNA. Because males are a genetic dead-end for mtDNA, mtDNA mutations that are detrimental for males but beneficial for females will spread. This will generate a male-specific genetic load (the mother’s curse). Further, the main energy producing pathway in eukaryotes (the OXPHOS pathway) is built collectively by products of the mitochondrial and the nuclear genome. Thus, mtDNA and nDNA are potentially entangled in an intricate web of epistatic interactions that dictates organismal metabolism. The proposed research is built upon a series of interrelated parts, and will use a very amenable insect model organism and employ a range of different research methodologies. Specific aims of the proposed research is (1) to assess the effects of mito-nuclear genotype on key life history traits such as metabolic rate and test whether these effects are sex-specific in line with the mother’s curse and (2) to test the hypothesis that mito-nuclear interactions promotes the maintenance of polymorphism in mitochondrial genome through negative frequency dependent selection. This research will have a range of biological implications, ranging from applied medical genetics over our use of mitochondrial genetic markers in population genetics/biology to speciation and our understanding of thermal adaptation to climate change.