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POLYADAPTATION

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Adaptive mechanisms of ecological divergence in sibling allopolyploid lineages

Hybridization and genome doubling are both frequent and ubiquitous across the entire evolutionary history of flowering plants and they regularly stimulate plant diversification and speciation. Immediately following a polyploidizat... ver más

31/01/2014

UNIVIE

45K€

Presupuesto del proyecto: 45K€

Líder del proyecto

UNIVERSITAT WIEN 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 FP7 notifico la concesión del proyecto el día 2014-01-31 No tenemos la información de la convocatoria

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UNIVIE

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Líder del proyecto

UNIVERSITAT WIEN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 45K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Hybridization and genome doubling are both frequent and ubiquitous across the entire evolutionary history of flowering plants and they regularly stimulate plant diversification and speciation. Immediately following a polyploidization event, a genome generally suffers adjustments in organization and function at the genetic and epigenetic level. These alterations have the potential to induce novel expression patterns, which together with permanent heterozygosity and gene redundancy, might result in significant phenotypic shifts and elevated evolutionary flexibility. Recurrent allopolyploidy can result in substantially different lineages, and it is interesting how such species can maintain distinctiveness while sharing the same genetic heritage and ploidy level. Here we aim to screen genome-wide natural diversity in gene expression rates among sibling species in order to identify genes that may drive adaptation to different environments and lead to isolation. By taking advantage of the most recent advances in genomic technologies we will test the theoretical predictions that only a few genetic loci controlling key traits are necessary for rapid ecological diversification. We will use a sophisticated model system, represented by ecologically divergent sibling species of Dactylorhiza in their native environmental context. The project will provide one of the most comprehensive studies of natural variation within an allopolyploid group and will lead to an enhanced appreciation of the effects of polyploidy on the evolution of metabolic pathways that are significant to adaptation and speciation. Finally, it has the potential to provide a drastically new perspective on the links between polyploidy and functional diversity and it will contribute toward a better understanding and hence prediction of the spectrum of genetic and epigenetic mechanisms active at the intraspecific (population) level.

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