ArticleGenome biology and evolution2014
Satellite DNA as a driver of population divergence in the red flour beetle Tribolium castaneum.
Article in Genome biology and evolution, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
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42 citing papers in PubMed, 78 citations in OpenAlex.
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- Holocentric repeat landscapes: From micro-evolutionary patterns to macro-evolutionary associations with karyotype evolution.Molecular ecology · 2024Article
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- Fast satellite DNA evolution in Nothobranchius annual killifishes.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2023Article
- High-quality haploid genomes corroborate 29 chromosomes and highly conserved synteny of genes in Hyles hawkmoths (Lepidoptera: Sphingidae).BMC genomics · 2023Article
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- Satellite DNAs in Health and Disease.Genes · 2022Review
- Satellitome comparison of two oedipodine grasshoppers highlights the contingent nature of satellite DNA evolution.BMC biology · 2022Article
- The extensive amplification of heterochromatin in Melipona bees revealed by high throughput genomic and chromosomal analysis.Chromosoma · 2021Article
- Sequence, Chromatin and Evolution of Satellite DNA.International journal of molecular sciences · 2021Review
- Population and subspecies diversity at mouse centromere satellites.BMC genomics · 2021Article
- FISH landmarks reflecting meiotic recombination and structural alterations of chromosomes in wheat (Triticum aestivum L.).BMC plant biology · 2021Article
- First Description of a Satellite DNA in Manatees' Centromeric Regions.Frontiers in genetics · 2021Article
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- Distinct Regulation of the Expression of Satellite DNAs in the BeetleInternational journal of molecular sciences · 2020Article
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tandemly repeated satellite DNAs are among most rapidly evolving sequences in eukaryotic genome, usually differing significantly among closely related species. By inducing changes in heterochromatin and/or centromere, satellite DNAs are expected to drive population and species divergence. However, despite high evolutionary dynamics, divergence of satellite DNA profiles at the level of natural population which precedes and possibly triggers speciation process is not readily detected. Here, we characterize minor TCAST2 satellite DNA of the red flour beetle Tribolium castaneum and follow its dynamics among wild-type strains originating from diverse geographic locations. The investigation revealed presence of three distinct subfamilies of TCAST2 satellite DNA which differ in monomer size, genome organization, and subfamily specific mutations. Subfamilies Tcast2a and Tcast2b are tandemly arranged within pericentromeric heterochromatin whereas Tcast2c is preferentially dispersed within euchromatin of all chromosomes. Among strains, TCAST2 subfamilies are conserved in sequence but exhibit a significant content variability. This results in overrepresentation or almost complete absence of particular subfamily in some strains and enables discrimination between strains. It is proposed that homologous recombination, probably stimulated by environmental stress, is responsible for the emergence of TCAST2 satellite subfamilies, their copy number variation and dispersion within genome. The results represent the first evidence for the existence of population-specific satellite DNA profiles. Partial organization of TCAST2 satellite DNA in the form of single repeats dispersed within euchromatin additionally contributes to the genome divergence at the population level.
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