DNA Diversity in Sex-Linked and Autosomal Genes of the Plant Species Silene latifolia and Silene dioica
نویسندگان
چکیده
منابع مشابه
DNA diversity in sex-linked and autosomal genes of the plant species Silene latifolia and Silene dioica.
The relatively recent origin of sex chromosomes in the plant genus Silene provides an opportunity to study the early stages of sex chromosome evolution and, potentially, to test between the different population genetic processes likely to operate in nonrecombining chromosomes such as Y chromosomes. We previously reported much lower nucleotide polymorphism in a Y-linked gene (SlY1) of the plant ...
متن کاملNucleotide diversity in Silene latifolia autosomal and sex-linked genes.
The plant Silene latifolia has separate sexes and sex chromosomes, and is of interest for studying the early stages of sex chromosome evolution, especially the evolution of non-recombining regions on the Y chromosome. Hitch-hiking processes associated with ongoing genetic degeneration of the non-recombining Y chromosome are predicted to reduce Y-linked genes' effective population sizes, and S. ...
متن کاملS. latifolia sex-linked genes, p. 1 Evolutionary strata on the X chromosomes of the dioecious plant Silene latifolia: evidence from new sex-linked genes
Despite its recent evolutionary origin, the sex-chromosome system of the plant Silene latifolia shows signs of progressive suppression of recombination having created evolutionary strata of different X-Y divergence on sex chromosomes. However, even after eight years of effort, this result is based on analyses of five sex-linked gene sequences, and the maximum divergence (and thus the age of thi...
متن کاملin Silene latifolia (Caryophyllaceae)
• Sex ratio polymorphism has been extensively studied in Silene latifolia, but it is neither known whether inbreeding (which is likely to occur under field conditions) affects it nor which of the proposed mechanisms (Y degeneration, X-linked drive) is more important. Both mechanisms predict reduced pollen performance. • In this study, females were crossed with pollen from related and unrelated ...
متن کاملExpansion of the pseudo-autosomal region and ongoing recombination suppression in the Silene latifolia sex chromosomes.
There are two very interesting aspects to the evolution of sex chromosomes: what happens after recombination between these chromosome pairs stops and why suppressed recombination evolves. The former question has been intensively studied in a diversity of organisms, but the latter has been studied largely theoretically. To obtain empirical data, we used codominant genic markers in genetic mappin...
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ژورنال
عنوان ژورنال: Molecular Biology and Evolution
سال: 2001
ISSN: 1537-1719,0737-4038
DOI: 10.1093/oxfordjournals.molbev.a003930