ArticleComparative cytogenetics2014
Genomic organization of repetitive DNAs and its implications for male karyotype and the neo-Y chromosome differentiation in Erythrinus erythrinus (Characiformes, Erythrinidae).
Article in Comparative cytogenetics, 2014. 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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Who cites it
16 citing papers in PubMed, 26 citations in OpenAlex.
- Article
- Article
- Chromosomal Diversification inFrontiers in genetics · 2022Article
- Tracking the Evolutionary Trends Among Small-Size Fishes of the GenusFrontiers in genetics · 2021Article
- Cytogenetic characterization, rDNA mapping and quantification of the nuclear DNA content inComparative cytogenetics · 2020Article
- Deciphering the Origin and Evolution of the XInternational journal of molecular sciences · 2019Article
- Article
- "Classical cytogenetics" is not equal to "banding cytogenetics".Molecular cytogenetics · 2017Article
- First Chromosomal Analysis in Hepsetidae (Actinopterygii, Characiformes): Insights into Relationship between African and Neotropical Fish Groups.Frontiers in genetics · 2017Article
- Contributions to the cytogenetics of the Neotropical fish fauna.Comparative cytogenetics · 2017Article
- Variability and evolutionary implications of repetitive DNA dynamics in genome ofComparative cytogenetics · 2017Article
- W Chromosome Dynamics in Triportheus Species (Characiformes, Triportheidae): An Ongoing Process Narrated by Repetitive Sequences.The Journal of heredity · 2016Article
- Identification and characterization of a LTR retrotransposon from the genome of Cyprinus carpio var. Jian.Genetica · 2016Article
- Review
- New insights of karyoevolution in the Amazonian turtlesMolecular cytogenetics · 2016Article
- Laser microdissection-based analysis of the Y sex chromosome of the Antarctic fish Chionodracohamatus (Notothenioidei, Channichthyidae).Comparative cytogenetics · 2015Article
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Studies have demonstrated the effective participation of repetitive DNA sequences in the origin and differentiation of the sex chromosomes in some biological groups. In this study several microsatellites and retrotranposable sequences were cytogenetically mapped in the Erythrinus erythrinus (Bloch & Schneider, 1801) male genome (karyomorph C), focusing on the distribution of these sequences in the sex chromosomes and in the evolutionary processes related to their differentiation. Males of E. erythrinus - karyomorph C - present 2n = 51 chromosomes (7m + 2sm + 6st + 36a), including the X1X2Y sex chromosomes. The C-positive heterochromatin has a predominant localization on the centromeric region of most chromosome pairs, but also in some telomeric regions. The 5S rDNA sites are located in the centromeric region of 27 chromosomes, including 26 acrocentric ones and the metacentric Y chromosome. The retrotransposons Rex 1 and Rex 6 show a dispersed pattern in the karyotype, contrasting with the Rex 3 distribution which is clearly co-localized with all the 27 5S rDNA sites. The microsatellite sequences show a differential distribution, some of them restricted to telomeric and/or interstitial regions and others with a scattered distribution on the chromosomes. However, no preferential accumulation of these elements were observed in the neo-Y chromosome, in contrast to what usually occurs in simple sex chromosome systems.
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