ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2016
Meiotic behaviour of evolutionary sex-autosome translocations in Bovidae.
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 25 citations in OpenAlex.
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- Strategies for meiotic sex chromosome dynamics and telomeric elongation in Marsupials.PLoS genetics · 2022Article
- Bisection of the X chromosome disrupts the initiation of chromosome silencing during meiosis in Caenorhabditis elegans.Nature communications · 2021Article
- Satellite DNA in Neotropical Deer Species.Genes · 2021Article
- Chromosomal Analysis inCells · 2020Article
- Meiosis reveals the early steps in the evolution of a neo-XY sex chromosome pair in the African pygmy mouse Mus minutoides.PLoS genetics · 2020Article
- Repeated sex chromosome evolution in vertebrates supported by expanded avian sex chromosomes.Proceedings. Biological sciences · 2019Article
- Comparative Chromosome Mapping of Musk Ox and the X Chromosome among Some Bovidae Species.Genes · 2019Article
- Sex chromosome quadrivalents in oocytes of the African pygmy mouse Mus minutoides that harbors non-conventional sex chromosomes.Chromosoma · 2019Article
- Identification of two independent X-autosome translocations in closely related mammalian (Proechimys) species.Scientific reports · 2019Article
- Interbreed variation in meiotic recombination rate and distribution in the domestic chickenArchives animal breeding · 2019Article
- Chromosome Evolution in Marsupials.Genes · 2018Review
- Recombination correlates with synaptonemal complex length and chromatin loop size in bovids-insights into mammalian meiotic chromosomal organization.Chromosoma · 2017Article
- X Chromosome Evolution in Cetartiodactyla.Genes · 2017Article
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8 authors at 3 institutions in 2 countries.
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Abstract
The recurrent occurrence of sex-autosome translocations during mammalian evolution suggests common mechanisms enabling a precise control of meiotic synapsis, recombination and inactivation of sex chromosomes. We used immunofluorescence and FISH to study the meiotic behaviour of sex chromosomes in six species of Bovidae with evolutionary sex-autosome translocations (Tragelaphus strepsiceros, Taurotragus oryx, Tragelaphus imberbis, Tragelaphus spekii, Gazella leptoceros and Nanger dama ruficollis). The autosomal regions of fused sex chromosomes showed normal synapsis with their homologous counterparts. Synapsis in the pseudoautosomal region (PAR) leads to the formation of characteristic bivalent (in T. imberbis and T. spekii with X;BTA13/Y;BTA13), trivalent (in T. strepsiceros and T. oryx with X/Y;BTA13 and G. leptoceros with X;BTA5/Y) and quadrivalent (in N. dama ruficollis with X;BTA5/Y;BTA16) structures at pachynema. However, when compared with other mammals, the number of pachynema lacking MLH1 foci in the PAR was relatively high, especially in T. imberbis and T. spekii, species with both sex chromosomes involved in sex autosome translocations. Meiotic transcriptional inactivation of the sex-autosome translocations assessed by γH2AX staining was restricted to their gonosomal regions. Despite intraspecies differences, the evolutionary fixation of sex-autosome translocations among bovids appears to involve general mechanisms ensuring sex chromosome pairing, synapsis, recombination and inactivation.
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