ArticleBMC genetics2012
Genetic characterization of Plectorhinchus mediterraneus yields important clues about genome organization and evolution of multigene families.
Article in BMC genetics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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11 citing papers in PubMed.
- New Hybrid Combination for Local Crucian Carp Germplasm Improvement: Dongting Lake Crucian Carp (♀) × Hefang Crucian Carp (♂).International journal of molecular sciences · 2026Article
- rDNA and mtDNA analysis for the identification of genetic characters in the hybrid grouper derived from hybridization of Cromileptes altivelis (female) × Epinephelus lanceolatus (male).BMC genomic data · 2024Article
- A New Type of Allodiploid Hybrids Derived From FemaleFrontiers in genetics · 2021Article
- Variations in 5S rDNAs in diploid and tetraploid offspring of red crucian carp × common carp.BMC genetics · 2017Article
- Evidence of birth-and-death evolution of 5S rRNA gene in Channa species (Teleostei, Perciformes).Genetica · 2016Article
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- The 5S rDNA in two Abracris grasshoppers (Ommatolampidinae: Acrididae): molecular and chromosomal organization.Molecular genetics and genomics : MGG · 2016Article
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- The 5S rDNA high dynamism in Diplodus sargus is a transposon-mediated mechanism. Comparison with other multigene families and Sparidae species.Journal of molecular evolution · 2013Article
- Evolutionary dynamics of rRNA gene clusters in cichlid fish.BMC evolutionary biology · 2012Article
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6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundMolecular and cytogenetic markers are of great use for to fish characterization, identification, phylogenetics and evolution. Multigene families have proven to be good markers for a better understanding of the variability, organization and evolution of fish species. Three different tandemly-repeated gene families (45S rDNA, 5S rDNA and U2 snDNA) have been studied in Plectorhinchus mediterraneus (Teleostei: Haemulidae), at both molecular and cytogenetic level, to elucidate the taxonomy and evolution of these multigene families, as well as for comparative purposes with other species of the family.
resultsFour different types of 5S rDNA were obtained; two of them showed a high homology with that of Raja asterias, and the putative implication of a horizontal transfer event and its consequences for the organization and evolution of the 5S rDNA have been discussed. The other two types do not resemble any other species, but in one of them a putative tRNA-derived SINE was observed for the first time, which could have implications in the evolution of the 5S rDNA. The ITS-1 sequence was more related to a species of another different genus than to that of the same genus, therefore a revision of the Hamulidae family systematic has been proposed. In the analysis of the U2 snDNA, we were able to corroborate that U2 snDNA and U5 snDNA were linked in the same tandem array, and this has interest for tracing evolutionary lines. The karyotype of the species was composed of 2n = 48 acrocentric chromosomes, and each of the three multigene families were located in different chromosome pairs, thus providing three different chromosomal markers.
conclusionsNovel data can be extracted from the results: a putative event of horizontal transfer, a possible tRNA-derived SINE linked to one of the four 5S rDNA types characterized, and a linkage between U2 and U5 snDNA. In addition, a revision of the taxonomy of the Haemulidae family has been suggested, and three cytogenetic markers have been obtained. Some of these results have not been described before in any other fish species. New clues about the genome organization and evolution of the multigene families are offered in this study.
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