ArticleGenome biology and evolution2018
A Genetic Map of Ostrich Z Chromosome and the Role of Inversions in Avian Sex Chromosome Evolution.
Article in Genome biology and evolution, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 32 citations in OpenAlex.
- Evolutionary dynamics of enlarged neo-sex chromosomes and novel pseudoautosomal regions in Sylvioidea songbirds.Communications biology · 2026Article
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- Evolution and expression patterns of the neo-sex chromosomes of the crested ibis.Nature communications · 2024Article
- Highlighting chromosomal rearrangements of five species of Galliformes (Domestic fowl, Common and Japanese quail, Barbary and Chukar partridge) and the Houbara bustard, an endangered Otidiformes: banding cytogenetic is a powerful tool.Comparative cytogenetics · 2024Article
- Chromatin accessibility, not 5mC methylation covaries with partial dosage compensation in crows.PLoS genetics · 2023Article
- The evolutionary maintenance of ancient recombining sex chromosomes in the ostrich.PLoS genetics · 2023Article
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- Phylogenomics and Diversification of the Schistosomatidae Based on Targeted Sequence Capture of Ultra-Conserved Elements.Pathogens (Basel, Switzerland) · 2022Article
- Extreme variation in recombination rate and genetic diversity along the Sylvioidea neo-sex chromosome.Molecular ecology · 2022Article
- Fourth Report on Chicken Genes and Chromosomes 2022.Cytogenetic and genome research · 2022Review
- Avian Neo-Sex Chromosomes Reveal Dynamics of Recombination Suppression and W Degeneration.Molecular biology and evolution · 2021Article
- Analysis of Sex Chromosome Evolution in the Clade Palaeognathae from Phased Genome Assembly.Genome biology and evolution · 2021Article
- A brief review of vertebrate sex evolution with a pledge for integrative research: towards 'Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Review
- Identifying the causes and consequences of assembly gaps using a multiplatform genome assembly of a bird-of-paradise.Molecular ecology resources · 2021Article
- Why Do Some Sex Chromosomes Degenerate More Slowly Than Others? The Odd Case of Ratite Sex Chromosomes.Genes · 2020Article
- How to identify sex chromosomes and their turnover.Molecular ecology · 2019Review
- Evolutionary Dynamics of Sex Chromosomes of Paleognathous Birds.Genome biology and evolution · 2019Article
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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
Recombination arrest is a necessary step for the evolution of distinct sex chromosomes. Structural changes, such as inversions, may represent the mechanistic basis for recombination suppression and comparisons of the structural organization of chromosomes as given by chromosome-level assemblies offer the possibility to infer inversions across species at some detail. In birds, deduction of the process of sex chromosome evolution has been hampered by the lack of a validated chromosome-level assembly from a representative of one of the two basal clades of modern birds, Paleognathae. We therefore developed a high-density genetic linkage map of the ostrich Z chromosome and used this to correct an existing assembly, including correction of a large chimeric superscaffold and the order and orientation of other superscaffolds. We identified the pseudoautosomal region as a 52 Mb segment (≈60% of the Z chromosome) where recombination occurred in both sexes. By comparing the order and location of genes on the ostrich Z chromosome with that of six bird species from the other major clade of birds (Neognathae), and of reptilian outgroup species, 25 Z-linked inversions were inferred in the avian lineages. We defined Z chromosome organization in an early avian ancestor and identified inversions spanning the candidate sex-determining DMRT1 gene in this ancestor, which could potentially have triggered the onset of avian sex chromosome evolution. We conclude that avian sex chromosome evolution has been characterized by a complex process of probably both Z-linked and W-linked inversions (and/or other processes). This study illustrates the need for validated chromosome-level assemblies for inference of genome evolution.
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