ArticleBMC genomics2016
The expansion of heterochromatin blocks in rye reflects the co-amplification of tandem repeats and adjacent transposable elements.
Article in BMC genomics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- Molecular cytogenetic analysis in Pseudorasbora parva (Cypriniformes: Gobionidae)-important invasive fish species in Türkiye.Genetica · 2026Article
- Using wheat-rye 1BL.1RS translocations to disclose the effects of subtelomeric tandem repeats on meiotic behavior of homologues.BMC plant biology · 2026Article
- Role of chromosome ends in meiotic stability, recombination and wheat evolution in the context of breeding.BMC plant biology · 2025Article
- High-resolution genome assembly reveals retrotransposon-mediated centromere dynamics in rye.Genome biology · 2025Article
- Distribution patterns of N6-methyladenine in the rye genome.Scientific reports · 2025Article
- Genomic analysis of Zhou8425B, a key founder parent, reveals its genetic contributions to elite agronomic traits in wheat breeding.Plant communications · 2025Article
- The different subtelomeric structure among 1RS arms in wheat-rye 1BL.1RS translocations affecting their meiotic recombination and inducing their structural variation.BMC genomics · 2023Article
- Genetic Redundancy in Rye Shows in a Variety of Ways.Plants (Basel, Switzerland) · 2023Review
- Variations of subtelomeric tandem repeats and rDNA on chromosome 1RS arms in the genus Secale and 1BL.1RS translocations.BMC plant biology · 2022Article
- The origin and evolution of a two-component system of paralogous genes encoding the centromeric histone CENH3 in cereals.BMC plant biology · 2021Article
- Telomeres and Subtelomeres Dynamics in the Context of Early Chromosome Interactions During Meiosis and Their Implications in Plant Breeding.Frontiers in plant science · 2021Review
- Chromosome Evolution in the Family Solanaceae.Frontiers in plant science · 2021Review
- Sequence analysis of wheat subtelomeres reveals a high polymorphism among homoeologous chromosomes.The plant genome · 2020Article
- Supernumerary B Chromosomes and Plant Genome Changes: A Snapshot of Wild Populations ofInternational journal of molecular sciences · 2020Article
- Heterochromatin and numeric chromosome evolution in Bignoniaceae, with emphasis on the Neotropical clade Tabebuia alliance.Genetics and molecular biology · 2020Article
- Article
- Interspecific cytogenetic relationships in threeComparative cytogenetics · 2020Article
- Genomics research at Bioinformatics of Genome Regulation and Structure\ Systems Biology (BGRS\SB) conferences in Novosibirsk.BMC genomics · 2019Article
- Physical location of tandem repeats in the wheat genome and application for chromosome identification.Planta · 2019Article
- Intraspecific and intraorganismal copy number dynamics of retrotransposons and tandem repeat in Aegilops speltoides Tausch (Poaceae, Triticeae).Protoplasma · 2018Article
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8 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundA prominent and distinctive feature of the rye (Secale cereale) chromosomes is the presence of massive blocks of subtelomeric heterochromatin, the size of which is correlated with the copy number of tandem arrays. The rapidity with which these regions have formed over the period of speciation remains unexplained.
resultsUsing a BAC library created from the short arm telosome of rye chromosome 1R we uncovered numerous arrays of the pSc200 and pSc250 tandem repeat families which are concentrated in subtelomeric heterochromatin and identified the adjacent DNA sequences. The arrays show significant heterogeneity in monomer organization. 454 reads were used to gain a representation of the expansion of these tandem repeats across the whole rye genome. The presence of multiple, relatively short monomer arrays, coupled with the mainly star-like topology of the monomer phylogenetic trees, was taken as indicative of a rapid expansion of the pSc200 and pSc250 arrays. The evolution of subtelomeric heterochromatin appears to have included a significant contribution of illegitimate recombination. The composition of transposable elements (TEs) within the regions flanking the pSc200 and pSc250 arrays differed markedly from that in the genome a whole. Solo-LTRs were strongly enriched, suggestive of a history of active ectopic exchange. Several DNA motifs were over-represented within the LTR sequences.
conclusionThe large blocks of subtelomeric heterochromatin have arisen from the combined activity of TEs and the expansion of the tandem repeats. The expansion was likely based on a highly complex network of recombination mechanisms.
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