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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.
MedLine Citation:
PMID:  23355010     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
There has been considerable discussion in recent years on the evolution of the tandemly repeated multigene families, since some organisms show a concerted model whereas others show a birth-and-death model. This controversial subject extends to several species of fish. In this study, three species of the Sparidae family (Pagrus pagrus, P. auriga and Diplodus sargus) and an interspecific hybrid (P. pagrus (♀) × P. auriga (♂)) have been studied at both molecular and cytogenetic level, taking three different multigene families (5S rDNA, 45S rDNA and U2 snDNA). Results obtained with the 5S rDNA in P. pagrus and P. auriga are characterized by a considerable degree of conservation at the two levels; however, an extraordinary variation was observed in D. sargus at the two levels, which has never been found in other fishes studied to date. As a consequence of this, the evolutionary model of the multigene families is discussed considering the results obtained and others from the bibliography. The result obtained in the hybrid allowed the recombination frequency in each multigene family to be estimated.
Authors:
Manuel A Merlo; Ismael Cross; Manuel Manchado; Salvador Cárdenas; Laureana Rebordinos
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-26
Journal Detail:
Title:  Journal of molecular evolution     Volume:  -     ISSN:  1432-1432     ISO Abbreviation:  J. Mol. Evol.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0360051     Medline TA:  J Mol Evol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Laboratorio de Genética, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro, Puerto Real, Cádiz, 11510, Spain.
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