ArticleGenome biology and evolution2015
Physical Mapping and Refinement of the Painted Turtle Genome (Chrysemys picta) Inform Amniote Genome Evolution and Challenge Turtle-Bird Chromosomal Conservation.
Article in Genome biology and evolution, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed, 50 citations in OpenAlex.
- A new chromosome-level genome assembly for western painted turtle Chrysemys picta bellii, a model for extreme physiological adaptations.BMC genomics · 2026Article
- Divergence and conservation of satellite DNA in the loggerhead sea turtle (Caretta caretta): a comparative cytogenomic analysis.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2026Article
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- Chromosomal puzzle in snakes: adjacent interstitial telomeric sites on chromosome 5 in three species of genus Vipera.Protoplasma · 2026Article
- Insights into avian molecular cytogenetics-with reptilian comparisons.Molecular cytogenetics · 2024Review
- De novo genome assemblies of two cryptodiran turtles with ZZ/ZW and XX/XY sex chromosomes provide insights into patterns of genome reshuffling and uncover novel 3D genome folding in amniotes.Genome research · 2024Article
- Reptile Evolution and Genetics: An Overview.Animals : an open access journal from MDPI · 2023Article
- Fixed Allele Differences Associated With the Centromere Reveal Chromosome Morphology and Rearrangements in a Reptile (Varanus acanthurus BOULENGER).Molecular biology and evolution · 2023Article
- Transcriptomic thermal plasticity underlying gonadal development in a turtle with ZZ/ZW sex chromosomes despite canalized genotypic sex determination.Ecology and evolution · 2023Article
- Genome Evolution and the Future of Phylogenomics of Non-Avian Reptiles.Animals : an open access journal from MDPI · 2023Review
- A Cautionary Tale of Sexing by Methylation: Hybrid Bisulfite-Conversion Sequencing of Immunoprecipitated Methylated DNA inAnimals : an open access journal from MDPI · 2022Article
- Dinosaurs: Comparative Cytogenomics of Their Reptile Cousins and Avian Descendants.Animals : an open access journal from MDPI · 2022Review
- Genome of the endangered Guatemalan Beaded Lizard, Heloderma charlesbogerti, reveals evolutionary relationships of squamates and declines in effective population sizes.G3 (Bethesda, Md.) · 2022Article
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- Fourth Report on Chicken Genes and Chromosomes 2022.Cytogenetic and genome research · 2022Review
- Meiotic chromosome dynamics and double strand break formation in reptiles.Frontiers in cell and developmental biology · 2022Article
- Review
- Thermosensitive sex chromosome dosage compensation in ZZ/ZW softshell turtles,Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Article
- Review
- Article
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Comparative genomics continues illuminating amniote genome evolution, but for many lineages our understanding remains incomplete. Here, we refine the assembly (CPI 3.0.3 NCBI AHGY00000000.2) and develop a cytogenetic map of the painted turtle (Chrysemys picta-CPI) genome, the first in turtles and in vertebrates with temperature-dependent sex determination. A comparison of turtle genomes with those of chicken, selected nonavian reptiles, and human revealed shared and novel genomic features, such as numerous chromosomal rearrangements. The largest conserved syntenic blocks between birds and turtles exist in four macrochromosomes, whereas rearrangements were evident in these and other chromosomes, disproving that turtles and birds retain fully conserved macrochromosomes for greater than 300 Myr. C-banding revealed large heterochromatic blocks in the centromeric region of only few chromosomes. The nucleolar-organizing region (NOR) mapped to a single CPI microchromosome, whereas in some turtles and lizards the NOR maps to nonhomologous sex-chromosomes, thus revealing independent translocations of the NOR in various reptilian lineages. There was no evidence for recent chromosomal fusions as interstitial telomeric-DNA was absent. Some repeat elements (CR1-like, Gypsy) were enriched in the centromeres of five chromosomes, whereas others were widespread in the CPI genome. Bacterial artificial chromosome (BAC) clones were hybridized to 18 of the 25 CPI chromosomes and anchored to a G-banded ideogram. Several CPI sex-determining genes mapped to five chromosomes, and homology was detected between yet other CPI autosomes and the globally nonhomologous sex chromosomes of chicken, other turtles, and squamates, underscoring the independent evolution of vertebrate sex-determining mechanisms.
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