ArticleBMC evolutionary biology2013
Evolutionary dynamics of retrotransposable elements Rex1, Rex3 and Rex6 in neotropical cichlid genomes.
Article in BMC evolutionary biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
21 citing papers in PubMed, 38 citations in OpenAlex.
- Microsatellite repeat mapping shows inner chromosomal diversification in highly conserved karyotypes of Asian cyprinid fishes.Comparative cytogenetics · 2025Article
- A Perspective of Molecular Cytogenomics, Toxicology, and Epigenetics for the Increase of Heterochromatic Regions and Retrotransposable Elements in Tambaqui (Animals : an open access journal from MDPI · 2022Article
- Transposable Elements and Stress in Vertebrates: An Overview.International journal of molecular sciences · 2021Review
- Mobile Elements in Ray-Finned Fish Genomes.Life (Basel, Switzerland) · 2020Review
- An intriguing relationship between teleost Rex3 retroelement and environmental temperature.Biology letters · 2019Article
- Rex Retroelements and Teleost Genomes: An Overview.International journal of molecular sciences · 2018Review
- Mobilization of retrotransposons as a cause of chromosomal diversification and rapid speciation: the case for the Antarctic teleost genus Trematomus.BMC genomics · 2018Article
- Comparative cytogenetics in three Sciaenid species (Teleostei, Perciformes): evidence of interspecific chromosomal diversification.Molecular cytogenetics · 2017Article
- Karyological characterization and identification of four repetitive element groups (the 18S - 28S rRNA gene, telomeric sequences, microsatellite repeat motifs,Comparative cytogenetics · 2017Article
- A new multiple sex chromosome system XGenetica · 2016Article
- Integrated cytogenetics and genomics analysis of transposable elements in the Nile tilapia, Oreochromis niloticus.Molecular genetics and genomics : MGG · 2016Article
- Genomic Organization Under Different Environmental Conditions: Hoplosternum Littorale as a Model.Zebrafish · 2016Article
- New insights of karyoevolution in the Amazonian turtlesMolecular cytogenetics · 2016Article
- First insights on the retroelement Rex1 in the cytogenetics of frogs.Molecular cytogenetics · 2015Article
- Dynamics of Rex3 in the genomes of endangered Iberian Leuciscinae (Teleostei, Cyprinidae) and their natural hybrids.Molecular cytogenetics · 2015Article
- First cytogenetic report in Cichlasoma sanctifranciscense Kullander, 1983 (Perciformes, Cichlidae) from northeastern Brazil with inferences on chromosomal evolution of Cichlasomatini.Comparative cytogenetics · 2015Article
- Chromosomal distribution of microsatellite repeats in Amazon cichlids genome (Pisces, Cichlidae).Comparative cytogenetics · 2015Article
- Repetitive sequences: the hidden diversity of heterochromatin in prochilodontid fish.Comparative cytogenetics · 2015Article
- Comparative cytogenetics of Neotropical cichlid fishes (Nannacara, Ivanacara and Cleithracara) indicates evolutionary reduction of diploid chromosome numbers.Comparative cytogenetics · 2014Article
- Chromosome mapping of retrotransposable elementsMobile genetic elements · 2013Article
Corrections and comments
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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
backgroundTransposable elements (TEs) have the potential to produce broad changes in the genomes of their hosts, acting as a type of evolutionary toolbox and generating a collection of new regulatory and coding sequences. Several TE classes have been studied in Neotropical cichlids; however, the information gained from these studies is restricted to the physical chromosome mapping, whereas the genetic diversity of the TEs remains unknown. Therefore, the genomic organization of the non-LTR retrotransposons Rex1, Rex3, and Rex6 in five Amazonian cichlid species was evaluated using physical chromosome mapping and DNA sequencing to provide information about the role of TEs in the evolution of cichlid genomes.
resultsPhysical mapping revealed abundant TE clusters dispersed throughout the chromosomes. Furthermore, several species showed conspicuous clusters accumulation in the centromeric and terminal portions of the chromosomes. These TE chromosomal sites are associated with both heterochromatic and euchromatic regions. A higher number of Rex1 clusters were observed among the derived species. The Rex1 and Rex3 nucleotide sequences were more conserved in the basal species than in the derived species; however, this pattern was not observed in Rex6. In addition, it was possible to observe conserved blocks corresponding to the reverse transcriptase fragment of the Rex1 and Rex3 clones and to the endonuclease of Rex6.
conclusionOur data showed no congruence between the Bayesian trees generated for Rex1, Rex3 and Rex6 of cichlid species and phylogenetic hypothesis described for the group. Rex1 and Rex3 nucleotide sequences were more conserved in the basal species whereas Rex6 exhibited high substitution rates in both basal and derived species. The distribution of Rex elements in cichlid genomes suggests that such elements are under the action of evolutionary mechanisms that lead to their accumulation in particular chromosome regions, mostly in heterochromatins.
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