ArticleMolecular cytogenetics2011
Chromosomal mapping of rDNAs and H3 histone sequences in the grasshopper rhammatocerus brasiliensis (acrididae, gomphocerinae): extensive chromosomal dispersion and co-localization of 5S rDNA/H3 histone clusters in the A complement and B chromosome.
Article in Molecular cytogenetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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25 citing papers in PubMed, 39 citations in OpenAlex.
- Review
- Chromosome analysis and the occurrence of B chromosomes in fish parasite Acanthocephalus anguillae (Palaeacanthocephala: Echinorhynchida).Parasite (Paris, France) · 2023Article
- Consequences of polyploidy and divergence as revealed by cytogenetic mapping of tandem repeats in African clawed frogs (European journal of wildlife research · 2023Article
- Article
- Meiotic behavior, transmission and active genes of B chromosomes in the cichlid Astatotilapia latifasciata: new clues about nature, evolution and maintenance of accessory elements.Molecular genetics and genomics : MGG · 2022Article
- Satellitome Analysis and Transposable Elements Comparison in Geographically Distant Populations ofLife (Basel, Switzerland) · 2022Article
- Out of patterns, the euchromatic B chromosome of the grasshopper Abracris flavolineata is not enriched in high-copy repeats.Heredity · 2021Article
- Comparative Analysis of Transposable Elements in GenusInsects · 2021Article
- Wide dispersion of B chromosomes in Rhammatocerus brasiliensis (Orthoptera, Acrididae).Genetics and molecular biology · 2020Article
- Review
- Article
- Insights into the karyotype evolution and speciation of the beetle Euchroma gigantea (Coleoptera: Buprestidae).Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2018Article
- Quantitative sequence characterization for repetitive DNA content in the supernumerary chromosome of the migratory locust.Chromosoma · 2018Article
- B chromosomes: from cytogenetics to systems biology.Chromosoma · 2017Review
- Phylogeny and chromosomal diversification in the Dichroplus elongatus species group (Orthoptera, Melanoplinae).PloS one · 2017Article
- Chromosomal evolutionary dynamics of four multigene families in Coreidae and Pentatomidae (Heteroptera) true bugs.Molecular genetics and genomics : MGG · 2016Article
- High similarity of U2 snDNA sequence between A and B chromosomes in the grasshopper Abracris flavolineata.Molecular genetics and genomics : MGG · 2015Article
- Chromosomal organization of the ribosomal RNA genes in the genus Chironomus (Diptera, Chironomidae).Comparative cytogenetics · 2015Article
- Spreading of heterochromatin and karyotype differentiation in two Tropidacris Scudder, 1869 species (Orthoptera, Romaleidae).Comparative cytogenetics · 2015Article
- A comparative study of genome organization and inferences for the systematics of two large bushcricket genera of the tribe Barbitistini (Orthoptera: Tettigoniidae: Phaneropterinae).BMC evolutionary biology · 2014Article
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSupernumerary B chromosomes occur in addition to standard karyotype and have been described in about 15% of eukaryotes, being the repetitive DNAs the major component of these chromosomes, including in some cases the presence of multigene families. To advance in the understanding of chromosomal organization of multigene families and B chromosome structure and evolution, the distribution of rRNA and H3 histone genes were analyzed in the standard karyotype and B chromosome of three populations of the grasshopper Rhammatocerus brasiliensis.
resultsThe location of major rDNA was coincident with the previous analysis for this species. On the other hand, the 5S rDNA mapped in almost all chromosomes of the standard complement (except in the pair 11) and in the B chromosome, showing a distinct result from other populations previously analyzed. Besides the spreading of 5S rDNA in the genome of R. brasiliensis it was also observed multiple sites for H3 histone genes, being located in the same chromosomal regions of 5S rDNAs, including the presence of the H3 gene in the B chromosome.
conclusionsDue to the intense spreading of 5S rRNA and H3 histone genes in the genome of R. brasiliensis, their chromosomal distribution was not informative in the clarification of the origin of B elements. Our results indicate a linked organization for the 5S rRNA and H3 histone multigene families investigated in R. brasiliensis, reinforcing previous data concerning the association of both genes in some insect groups. The present findings contribute to understanding the organization/evolution of multigene families in the insect genomes.
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