ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology2020
Multiple and independent rearrangements revealed by comparative cytogenetic mapping in the dysploid Leptostachyus group (Phaseolus L., Leguminosae).
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 2020. 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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7 citing papers in PubMed, 15 citations in OpenAlex.
- Cytogenomic and phylogenomic evidence for new infrageneric relationships in Macroptilium (Benth.) beans.Annals of botany · 2026Article
- Thriving or Withering? Plant Molecular Cytogenetics in the First Quarter of the 21st Century.International journal of molecular sciences · 2025Review
- "End-to-End Chromosome Fusion" as the Main Driver of Descending Dysploidy inPlants (Basel, Switzerland) · 2025Article
- Comparative analysis of repetitive DNA in dysploid and non-dysploid Phaseolus beans.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2023Article
- Mixed-Ploidy and Dysploidy inPlants (Basel, Switzerland) · 2022Article
- Molecular and Cytogenetic Analysis of rDNA Evolution in Crepis Sensu Lato.International journal of molecular sciences · 2022Article
- Oligo-FISH barcode in beans: a new chromosome identification system.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2021Article
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3 authors at 1 institution in 1 country.
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Abstract
Polyploidy and dysploidy have been reported as the main events in karyotype evolution of plants. In the genus Phaseolus L. (2n = 22), a small monophyletic group of three species, the Leptostachyus group, presents a dysploid karyotype with 2n = 20. It was shown in Phaseolus leptostachyus that the dysploidy was caused by a nested chromosome fusion (NCF) accompanied by several translocations, suggesting a high rate of karyotype evolution in the group. To verify if this karyotype restructuring was a single event or occurred progressively during the evolution of this group, we analysed P. macvaughii, sister to Phaseolus micranthus + P. leptostachyus. Twenty-four genomic clones of P. vulgaris previously mapped on P. leptostachyus, in addition to the 5S and 35S rDNA probes, were used for fluorescence in situ hybridization. Only a single rearrangement was common to the two species: the nested chromosome fusion (NCF) involving chromosomes 10 and 11. The translocation of chromosome 2 is not the same found in P. leptostachyus, and pericentric inversions in chromosomed 3 and 4 were exclusive of P. macvaughii. The other rearrangements observed in P. leptostachyus were not shared with this species, suggesting that they occurred after the separation of these lineages. The presence of private rearrangements indicates a progressive accumulation of karyotype changes in the Leptostachyus group instead of an instant genome-wide repatterning.
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