ArticleGenome biology and evolution2023
Chromosome-Level Genome Assembly of the Blacktail Brush Lizard, Urosaurus nigricaudus, Reveals Dosage Compensation in an Endemic Lizard.
Article in Genome biology and evolution, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 12 citations in OpenAlex.
- Widespread male-female expression imbalance of X-linked genes across phrynosomatid lizards.Molecular biology and evolution · 2026Article
- Unravelling the thread of Podarcis omics; insights into the genome and transcriptome of the Cretan wall lizard.Genes & genomics · 2026Article
- Sex chromosome dosage compensation in a sex reversing skink is not influenced by sexual phenotype.BMC genomics · 2025Article
- Structural Rearrangements and Selection Promote Phenotypic Evolution in Anolis Lizards.Genome biology and evolution · 2025Article
- Chromosome-level genome assembly and Oligo-FISH confirmation of chromosome models for the Tasmanian snow skink Carinascincus ocellatus (Scincidae, Eugongylinae).BMC biology · 2025Article
- Chromosome-length genome assembly ofbioRxiv : the preprint server for biology · 2025Article
- Incomplete transcriptional dosage compensation of chicken and platypus sex chromosomes is balanced by post-transcriptional compensation.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
Corrections and comments
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Authors and funding
7 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Urosaurus nigricaudus is a phrynosomatid lizard endemic to the Baja California Peninsula in Mexico. This work presents a chromosome-level genome assembly and annotation from a male individual. We used PacBio long reads and HiRise scaffolding to generate a high-quality genomic assembly of 1.87 Gb distributed in 327 scaffolds, with an N50 of 279 Mb and an L50 of 3. Approximately 98.4% of the genome is contained in 14 scaffolds, with 6 large scaffolds (334-127 Mb) representing macrochromosomes and 8 small scaffolds (63-22 Mb) representing microchromosomes. Using standard gene modeling and transcriptomic data, we predicted 17,902 protein-coding genes on the genome. The repeat content is characterized by a large proportion of long interspersed nuclear elements that are relatively old. Synteny analysis revealed some microchromosomes with high repeat content are more prone to rearrangements but that both macro- and microchromosomes are well conserved across reptiles. We identified scaffold 14 as the X chromosome. This microchromosome presents perfect dosage compensation where the single X of males has the same expression levels as two X chromosomes in females. Finally, we estimated the effective population size for U. nigricaudus was extremely low, which may reflect a reduction in polymorphism related to it becoming a peninsular endemic.
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