ArticleGenetics2005
Extreme population structure and high interspecific divergence of the Silene Y chromosome.
Article in Genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 45 citations in OpenAlex.
- Origin and domestication of papaya Yh chromosome.Genome research · 2015Article
- Genetics of dioecy and causal sex chromosomes in plants.Journal of genetics · 2014Review
- DNA polymorphism in recombining and non-recombining mating-type-specific loci of the smut fungus Microbotryum.Heredity · 2011Article
- Chromosome-wide linkage disequilibrium caused by an inversion polymorphism in the white-throated sparrow (Zonotrichia albicollis).Heredity · 2011Article
- A new plant sex-linked gene with high sequence diversity and possible introgression of the X copy.Heredity · 2011Article
- Article
- Nucleotide diversity in Silene latifolia autosomal and sex-linked genes.Proceedings. Biological sciences · 2010Article
- Evolution of neo-sex chromosomes in Silene diclinis.Genetics · 2009Article
- Recent spread of a retrotransposon in the Silene latifolia genome, apart from the Y chromosome.Genetics · 2009Article
- Selection for antimicrobial peptide diversity in frogs leads to gene duplication and low allelic variation.Journal of molecular evolution · 2007Article
- Article
- Molecular and quantitative genetic differentiation in European populations of Silene latifolia (Caryophyllaceae).Annals of botany · 2007Article
- Phylogeny and evolution of mating-type genes from Pyrenophora teres, the causal agent of barley "net blotch" disease.Current genetics · 2007Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Previous studies have demonstrated that the diversity of Y-linked genes is substantially lower than that of their X-linked homologs in the plant Silene latifolia. This difference has been attributed to selective sweeps, Muller's ratchet, and background selection, processes that are predicted to severely affect the evolution of the nonrecombining Y chromosome. We studied the DNA diversity of a noncoding region of the homologous genes DD44Y and DD44X, sampling S. latifolia populations from a wide geographical area and also including the closely related species S. dioica, S. diclinis, and S. heuffelii. On the Y chromosome of S. latifolia, we found substantial DNA diversity. Geographical population structure was far higher than on the X chromosome and differentiation between the species was also higher for the Y than for the X chromosome. Our findings indicate that the loss of genetic diversity on the Y chromosome in Silene occurs within local populations rather than within entire species. These results are compatible with background selection, Muller's ratchet, and local selective sweeps, but not with species-wide selective sweeps. The higher interspecific divergence of DD44Y, compared to DD44X, supports the hypothesis that Y chromosome differentiation between incipient species precedes reproductive isolation of the entire genome, forming an early stage in the process of speciation.
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