ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2012
The origin and differentiation process of X and Y chromosomes of the black marsh turtle (Siebenrockiella crassicollis, Geoemydidae, Testudines).
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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26 citing papers in PubMed, 41 citations in OpenAlex.
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- Partial Amniote Sex Chromosomal Linkage Homologies Shared on Snake W Sex Chromosomes Support the Ancestral Super-Sex Chromosome Evolution in Amniotes.Frontiers in genetics · 2020Article
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- Discovery of the youngest sex chromosomes reveals first case of convergent co-option of ancestral autosomes in turtles.Chromosoma · 2017Article
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- Dynamics of vertebrate sex chromosome evolution: from equal size to giants and dwarfs.Chromosoma · 2016Review
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The black marsh turtle (Siebenrockiella crassicollis) has morphologically differentiated X and Y sex chromosomes. To elucidate the origin and evolutionary process of S. crassicollis X and Y chromosomes, we performed cross-species chromosome painting with chromosome-specific DNA from Chinese soft-shelled turtle (Pelodiscus sinensis) and chromosome mapping of the sex-linked genes of S. crassicollis using FISH. The X and Y chromosomes of S. crassicollis were hybridized with DNA probe of P. sinensis chromosome 5, which is homologous to chicken chromosome 5. S. crassicollis homologues of 14 chicken chromosome 5-linked genes were all localized to the X long arm, whereas two genes were mapped to the Y short arm and the other 12 genes were localized to the Y long arm in the same order as the X chromosome. This result suggests that extensive linkage homology has been retained between chicken chromosome 5 and S. crassicollis X and Y chromosomes and that S. crassicollis X and Y chromosomes are at an early stage of sex chromosome differentiation. Comparison of the locations of two site-specific repetitive DNA sequences on the X and Y chromosomes demonstrated that the centromere shift was the result of centromere repositioning, not of pericentric inversion.
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