ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2011
Tandem repeats on an eco-geographical scale: outcomes from the genome of Aegilops speltoides.
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 31 citations in OpenAlex.
- Article
- The relationship between transposable elements and ecological niches in the Greater Cape Floristic Region: A study on the genusFrontiers in plant science · 2022Article
- B-A Chromosome Translocations Possessing an A Centromere Partly Overcome the Root-Restricted Process of Chromosome Elimination inFrontiers in cell and developmental biology · 2022Article
- Supernumerary B Chromosomes and Plant Genome Changes: A Snapshot of Wild Populations ofInternational journal of molecular sciences · 2020Article
- Long Tandem Arrays ofInternational journal of molecular sciences · 2020Article
- Analysis of Structural Genomic Diversity inFrontiers in plant science · 2020Article
- Review
- Intraspecific and intraorganismal copy number dynamics of retrotransposons and tandem repeat in Aegilops speltoides Tausch (Poaceae, Triticeae).Protoplasma · 2018Article
- Evolution of the S-Genomes inFrontiers in plant science · 2018Article
- Repetitive DNA in the Architecture, Repatterning, and Diversification of the Genome ofFrontiers in plant science · 2018Article
- Transposable Elements in the Organization and Diversification of the Genome ofInternational journal of genomics · 2018Article
- Satellite DNA as a driver of population divergence in the red flour beetle Tribolium castaneum.Genome biology and evolution · 2014Article
- Differential amplification of satellite PaB6 in chromosomally hypervariable Prospero autumnale complex (Hyacinthaceae).Annals of botany · 2014Article
- B chromosomes of Aegilops speltoides are enriched in organelle genome-derived sequences.PloS one · 2014Article
- Chromosome evolution in marginal populations of Aegilops speltoides: causes and consequences.Annals of botany · 2013Article
- Article
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3 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The chromosomal pattern of tandem repeat fractions of repetitive DNA is one of the most important characteristics of a species. In the present research, we aimed to detect and evaluate the level of intraspecific variability in the chromosomal distribution of species-specific Spelt 1 and Aegilops-Triticum-specific Spelt 52 tandem repeats in Aegilops speltoides and in closely related diploid and polyploid species. There is a distinct eco-geographical gradient in Spelt 1 and Spelt 52 blocks abundance in Ae. speltoides. In marginal populations, the number of Spelt 1 chromosomal blocks could be 12-14 times lower than in the center of the species distribution. Also, in related diploid species, the abundance of Spelt 52 correlates with evolutionary proximity to Ae. speltoides. Finally, the B- and G-genomes of allopolyploid wheats have Spelt 1 chromosomal distribution patterns similar to those of the types of Ae. speltoides with poor and rich contents of Spelt 1, respectively. The observed changes in numbers of blocks of Spelt 1 and Spelt 52 tandem repeats along the eco-geographical gradient may due to their depletion in the marginal populations as a result of increased recombination frequency under stressful conditions. Alternatively, it may be accumulation of tandem repeats in conducive climatic/edaphic environments in the center of the species' geographical distribution. Anyway, we observe a bidirectional shift of repetitive DNA genomic patterns on the population level leading to the formation of population-specific chromosomal patterns of tandem repeats. The appearance of a new chromosomal pattern is considered an important factor in promoting the emergence of interbreeding barriers.
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