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RECONSTRUCTING ORIGINS OF LOSS OF SELF-INCOMPATIBILITY AND SELFING IN NORTH AMERICAN ARABIDOPSIS LYRATA: A POPULATION GENETIC CONTEXT

Foxe, John Paul ; Stift, Marc ; Tedder, Andrew ; Haudry, Annabelle ; Wright, Stephen I. ; Mable, Barbara K.

Evolution, 2010-12, Vol.64 (12), p.3495-3510 [Periódico revisado por pares]

Malden, USA: Wiley Periodicals Inc

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Título:
RECONSTRUCTING ORIGINS OF LOSS OF SELF-INCOMPATIBILITY AND SELFING IN NORTH AMERICAN ARABIDOPSIS LYRATA: A POPULATION GENETIC CONTEXT
Autor: Foxe, John Paul ; Stift, Marc ; Tedder, Andrew ; Haudry, Annabelle ; Wright, Stephen I. ; Mable, Barbara K.
Assuntos: Arabidopsis ; Arabidopsis - genetics ; Arabidopsis - physiology ; bottlenecks ; breakdown of self‐incompatibility ; Chloroplasts ; Demography ; Deoxyribonucleic acid ; Depopulation ; DNA ; DNA, Chloroplast - genetics ; DNA, Plant - genetics ; effective population size ; Evolution ; Evolution & development ; Evolutionary genetics ; Genetic diversity ; Genetic loci ; Genetic Variation ; Genetics, Population ; Haplotypes ; Inbreeding ; inbreeding depression ; Lakes ; Life Sciences ; mating system evolution ; Microsatellite Repeats ; Microsatellites ; Molecular Sequence Data ; Ontario ; Phenotype ; Phylogeny ; Plant populations ; Plant reproduction ; Plants ; Population genetics ; Population size ; Reproduction ; Self-Fertilization
É parte de: Evolution, 2010-12, Vol.64 (12), p.3495-3510
Notas: These authors contributed equally to this work.
Present address: Centro de Investigação em Biodiversidade e Recursos Genéticos, Campus Agrário de Vairão, R. Padre Armando Quintas, 4485‐661, Vairão, Portugal.
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Descrição: Theoretical and empirical comparisons of molecular diversity in self ing and outcrossing plants have primarily focused on long-term consequences of differences in mating system (between species). However, improving our understanding of the causes of mating system evolution requires ecological and genetic studies of the early stages of mating system transition. Here, we examine nuclear and chloroplast DNA sequences and microsatellite variation in a large sample of populations of Arabidopsis lyrata from the Great Lakes region of Eastern North American that show intra-and interpopulation variation in the degree of self-incompatibility and realized outcrossing rates. Populations show strong geographic clustering irrespective of mating system, suggesting that selfing either evolved multiple times or has spread to multiple genetic backgrounds. Diversity is reduced in selfing populations, but not to the extent of the severe loss of variation expected if selfing evolved due to selection for reproductive assurance in connection with strong founder events. The spread of self-compatibility in this region may have been favored as colonization bottlenecks following glaciation or migration from Europe reduced standing levels of inbreeding depression. However, our results do not suggest a single transition to selfing in this system, as has been suggested for some other species in the Brassicaceae.
Editor: Malden, USA: Wiley Periodicals Inc
Idioma: Inglês

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RECONSTRUCTING ORIGINS OF LOSS OF SELF-INCOMPATIBILITY AND SELFING IN NORTH AMERICAN ARABIDOPSIS LYRATA: A POPULATION GENETIC CONTEXT

Foxe, John Paul ; Stift, Marc ; Tedder, Andrew ; Haudry, Annabelle ; Wright, Stephen I. ; Mable, Barbara K.

Malden, USA: Wiley Periodicals Inc

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