ArticleBMC genetics2016
Unique nucleolar dominance patterns in distant hybrid lineage derived from Megalobrama Amblycephala × Culter Alburnus.
Article in BMC genetics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 22 citations in OpenAlex.
- Chromatin-mediated mechanisms of hybrid fertility in FBMC biology · 2026Article
- Establishment and Biological Characteristics Analysis of a Hybrid Culter Lineage fromAnimals : an open access journal from MDPI · 2025Article
- Chromosomal rDNA Distribution Patterns in ClonalGenes · 2025Article
- Hybrid Origin of ×International journal of molecular sciences · 2024Article
- Maternal effects shape the alternative splicing of parental alleles in reciprocal cross hybrids of Megalobrama amblycephala × Culter alburnus.BMC genomics · 2020Article
- The subgenomes show asymmetric expression of alleles in hybrid lineages ofGenome research · 2019Article
- Integrative rDNAomics-Importance of the Oldest Repetitive Fraction of the Eukaryote Genome.Genes · 2019Review
- Optimization Techniques to Deeply Mine the Transcriptomic Profile of the Sub-Genomes in Hybrid Fish Lineage.Frontiers in genetics · 2019Article
- Nucleolar Dominance in a Tetraploidy Hybrid Lineage Derived FromFrontiers in genetics · 2018Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundNucleolar dominance is an epigenetic phenomenon that occurs in interspecific hybrids and involves the expression of 45S rRNA genes inherited from one progenitor due to the silencing of the other progenitor's rRNA genes. In this paper, changes in the genetics and expression of 45S rRNA genes in F1 and F2 hybrid progeny of blunt snout bream (BSB, Megalobrama amblycephala) × topmouth culter (TC, Culter alburnus) are investigated.
resultsThe 45S rDNA loci were analyzed by cloning, RT-PCR and sequencing methods. The results show that nucleolar dominance patterns differ in the F1 and F2 hybrids. In the F1 hybrids of BSB × TC, all the tested individuals inherited and expressed the 45S rRNA genes of both BSB and TC, indicating that nucleolar dominance is not established in the F1 hybrids. However, in the F2 hybrids of BSB × TC, five patterns are observed. Pattern 1 inherits and expresses only the 45S rRNA gene of BSB. Pattern 2 inherits the 45S rRNA gene from both BSB and TC, but only expresses the 45S rRNA of BSB. Pattern 3 inherits and expresses the 45S rRNA gene from both BSB and TC. Pattern 4 inherits the 45S rRNA gene from both BSB and TC, but only expresses the 45S rRNA gene of TC. Pattern 5 inherits and expresses only the 45S rRNA gene of TC.
conclusionsNucleolar dominance shows distinctive patterns in intergeneric hybrids of BSB × TC. It is not established in F1 hybrids and is random in F2 hybrids. This study provides new insights into the phenomenon of nucleolar dominance in genetic hybrids in vertebrates.
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