ArticleScientific reports2019
Diversity of PBI-DdeI satellite DNA in snakes correlates with rapid independent evolution and different functional roles.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 25 citations in OpenAlex.
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- Genetic insights: mapping sex-specific loci in Siamese cobra (Naja kaouthia) sheds light on the putative sex determining region.Genes & genomics · 2024Article
- MicrosatNavigator: exploring nonrandom distribution and lineage-specificity of microsatellite repeat motifs on vertebrate sex chromosomes across 186 whole genomes.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2023Article
- Conservation of Major Satellite DNAs in Snake Heterochromatin.Animals : an open access journal from MDPI · 2023Article
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- Something Fishy about Siamese Fighting Fish (Cells · 2022Article
- Why Do Some Vertebrates Have Microchromosomes?Cells · 2021Review
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- Do sex chromosomes of snakes, monitor lizards, and iguanian lizards result from multiple fission of an "ancestral amniote super-sex chromosome"?Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2020Article
- 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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Authors and funding
13 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To better understand PBI-DdeI satellite DNA located in the centromeric region of python, molecular evolution analysis was conducted on 40 snake species. A ladder-like pattern of DNA bands with repetition of the 194-210 bp monomer was observed in 15 species using PCR. Molecular cloning was performed to obtain 97 AT-rich monomer sequences. Phylogenetic and network analyses showed three PBI-DdeI subfamilies with sequences grouped in species-specific clusters, suggesting rapid evolution. Slow evolution was found in eight species with shared PBI-DdeI sequences, suggesting recent species diversification, allowing PBI-DdeI no time to diverge, with limited homogenization and fixation processes. Quantitative real-time PCR showed large differences in copy number between Python bivittatus and other snakes, consistent with repeat scanning of whole genome sequences. Copy numbers were significantly higher in female Naja kaouthia than in males, concurring with chromosomal distribution of PBI-DdeI specifically localized to female W chromosomes. PBI-DdeI might act as an evolutionary driver with several repeats to promote W chromosome differentiation and heterochromatinization in N. kaouthia. Analysis revealed PBI-DdeI with a reduced copy number, compared to P. bivittatus, in most snakes studied, and it is possible that it subsequently dispersed and amplified on W chromosomes with different functional roles in N. kaouthia.
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