Rapid degeneration of noncoding DNA regions surrounding SlAP3X/Y after recombination suppression in a dioecious plant, Silene latifolia
نویسندگان
چکیده
Kotaro Ishii, Rie Nishiyama, Fukashi Shibata, Yusuke Kazama, Tomoko Abe , and Shigeyuki Kawano RIKEN Nishina Center, Wako, Saitama 351-0198, Japan RIKEN Plant Science Center, Yokohama, Kanagawa 230-0045, Japan Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan. RIKEN Innovation Center, Wako, Saitama 351-0198, Japan Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8562, Japan
منابع مشابه
Rapid Degeneration of Noncoding DNA Regions Surrounding SlAP3X/Y After Recombination Suppression in the Dioecious Plant Silene latifolia
Silene latifolia is a dioecious plant with heteromorphic XY sex chromosomes. Previous studies of sex chromosome-linked genes have suggested a gradual divergence between the X-linked and the Y-linked genes in proportion to the distance from the pseudoautosomal region. However, such a comparison has yet to be made for the noncoding regions. To better characterize the nonrecombining region of the ...
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The dioecious plant Silene latifolia possesses evolutionarily young sex chromosomes, and so serves as a model system to study the early stages of sex chromosome evolution. Sex chromosomes often differ distinctly from autosomes in both their structure and their patterns of evolution. The S. latifolia Y chromosome is particularly unique owing to its large size, which contrasts with the size of sm...
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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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The human Y--probably because of its nonrecombining nature--has lost 97% of its genes since X and Y chromosomes started to diverge [1, 2]. There are clear signs of degeneration in the Drosophila miranda neoY chromosome (an autosome fused to the Y chromosome), with neoY genes showing faster protein evolution [3-6], accumulation of unpreferred codons [6], more insertions of transposable elements ...
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Classical genetic studies discovered loss of genes from the ancient sex chromosome systems of several animals (genetic degeneration), and complete genome sequencing confirms that the heterogametic sex is hemizygous for most sex-linked genes. Genetic degeneration is thought to result from the absence of recombination between the sex chromosome pair (reviewed by [1]) and is very rapid after sex c...
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