Selection at Work in Self-Incompatible Arabidopsis lyrata: Mating Patterns in a Natural Population
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چکیده
منابع مشابه
Selection at work in self-incompatible Arabidopsis lyrata: mating patterns in a natural population.
Identification and characterization of the self-incompatibility genes in Brassicaceae species now allow typing of self-incompatibility haplotypes in natural populations. In this study we sampled and mapped all 88 individuals in a small population of Arabidopsis lyrata from Iceland. The self-incompatibility haplotypes at the SRK gene were typed for all the plants and some of their progeny and us...
متن کاملSelection at work in self-incompatible Arabidopsis lyrata. II. Spatial distribution of S haplotypes in Iceland.
We survey the distribution of haplotypes at the self-incompatibility (SI) locus of Arabidopsis lyrata (Brassicaceae) at 12 locations spread over the species' natural distribution in Iceland. Previous investigations of the system have identified 34 functionally different S haplotypes maintained by frequency-dependent selection and arranged them into four classes of dominance in their phenotypic ...
متن کاملDemography and weak selection drive patterns of transposable element diversity in natural populations of Arabidopsis lyrata.
Transposable elements (TEs) are the major component of most plant genomes, and characterizing their population dynamics is key to understanding plant genome complexity. Yet there have been few studies of TE population genetics in plant systems. To study the roles of selection, transposition, and demography in shaping TE population diversity, we generated a polymorphism dataset for six TE famili...
متن کاملPatterns of Polymorphism and Demographic History in Natural Populations of Arabidopsis lyrata
BACKGROUND Many of the processes affecting genetic diversity act on local populations. However, studies of plant nucleotide diversity have largely ignored local sampling, making it difficult to infer the demographic history of populations and to assess the importance of local adaptation. Arabidopsis lyrata, a self-incompatible, perennial species with a circumpolar distribution, is an excellent ...
متن کاملPopulation structure in Arabidopsis lyrata: evidence for divergent selection on trichome production.
Leaf trichomes may serve several biological functions including protection against herbivores, drought, and UV radiation; and their adaptive value can be expected to vary among environments. The perennial, self-incompatible herb Arabidopsis lyrata is polymorphic for trichome production, and occurs in a glabrous and a trichome-producing form. Controlled crosses indicate that the polymorphism is ...
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ژورنال
عنوان ژورنال: Genetics
سال: 2006
ISSN: 1943-2631
DOI: 10.1534/genetics.105.045682