Comparative analysis of repetitive DNA in dysploid and non-dysploid Phaseolus beans.
Chromosome rearrangements
Chromovirus
FISH
Repeat abundance
Retrotransposons
Satellite DNA
Journal
Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology
ISSN: 1573-6849
Titre abrégé: Chromosome Res
Pays: Netherlands
ID NLM: 9313452
Informations de publication
Date de publication:
09 Oct 2023
09 Oct 2023
Historique:
received:
11
07
2023
accepted:
15
09
2023
revised:
31
08
2023
medline:
1
11
2023
pubmed:
9
10
2023
entrez:
9
10
2023
Statut:
epublish
Résumé
Structural karyotype changes result from ectopic recombination events frequently associated with repetitive DNA. Although most Phaseolus species present relatively stable karyotypes with 2n = 22 chromosomes, the karyotypes of species of the Leptostachyus group show high rates of structural rearrangements, including a nested chromosome fusion that led to the dysploid chromosome number of the group (2n = 20). We examined the roles of repetitive landscapes in the rearrangements of species of the Leptostachyus group using genome-skimming data to characterize the repeatome in a range of Phaseolus species and compared them to species of that group (P. leptostachyus and P. macvaughii). LTR retrotransposons, especially the Ty3/gypsy lineage Chromovirus, were the most abundant elements in the genomes. Differences in the abundance of Tekay, Retand, and SIRE elements between P. macvaughii and P. leptostachyus were reflected in their total amounts of Ty3/gypsy and Ty1/copia. The satellite DNA fraction was the most divergent among the species, varying both in abundance and distribution, even between P. leptostachyus and P. macvaughii. The rapid turnover of repeats in the Leptostachyus group may be associated with the several rearrangements observed.
Identifiants
pubmed: 37812264
doi: 10.1007/s10577-023-09739-3
pii: 10.1007/s10577-023-09739-3
doi:
Substances chimiques
DNA, Plant
0
DNA, Satellite
0
Retroelements
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
30Subventions
Organisme : Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
ID : Finance Code 001
Organisme : Conselho Nacional de Desenvolvimento Científico e Tecnológico
ID : 312694/2021-0
Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer Nature B.V.
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