Artículo
The 5S rDNA in two abracris grasshoppers (ommatolampidinae: acrididae): molecular and chromosomal organization
Bueno, Danilo; Palacios Gimenez, Octavio Manuel; Marti, Dardo Andrea
; Casagrande Mariguela, Tatiane; Cabral de Mello, Diogo Cavalcanti
Fecha de publicación:
04/2016
Editorial:
Springer Heidelberg
Revista:
Molecular Genetics And Genomics
ISSN:
1617-4615
e-ISSN:
1617-4623
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The 5S ribosomal DNA (rDNA) sequences are subject of dynamic evolution at chromosomal and molecular levels, evolving through concerted and/or birth-and-death fashion. Among grasshoppers, the chromosomal location for this sequence was established for some species, but little molecular information was obtained to infer evolutionary patterns. Here, we integrated data from chromosomal and nucleotide sequence analysis for 5S rDNA in two Abracris species aiming to identify evolutionary dynamics. For both species, two arrays were identified, a larger sequence (named type-I) that consisted of the entire 5S rDNA gene plus NTS (non-transcribed spacer) and a smaller (named type-II) with truncated 5S rDNA gene plus short NTS that was considered a pseudogene. For type-I sequences, the gene corresponding region contained the internal control region and poly-T motif and the NTS presented partial transposable elements. Between the species, nucleotide differences for type-I were noticed, while type-II was identical, suggesting pseudogenization in a common ancestor. At chromosomal point to view, the type-II was placed in one bivalent, while type-I occurred in multiple copies in distinct chromosomes. In Abracris, the evolution of 5S rDNA was apparently influenced by the chromosomal distribution of clusters (single or multiple location), resulting in a mixed mechanism integrating concerted and birth-and-death evolution depending on the unit.
Palabras clave:
Repetitive Dnas
,
Nontranscribed Spacer
,
Multigene Family
,
Genome
,
Fish
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Colecciones
Articulos(IBS)
Articulos de INSTITUTO DE BIOLOGIA SUBTROPICAL
Articulos de INSTITUTO DE BIOLOGIA SUBTROPICAL
Citación
Bueno, Danilo; Palacios Gimenez, Octavio Manuel; Marti, Dardo Andrea; Casagrande Mariguela, Tatiane; Cabral de Mello, Diogo Cavalcanti; The 5S rDNA in two abracris grasshoppers (ommatolampidinae: acrididae): molecular and chromosomal organization; Springer Heidelberg; Molecular Genetics And Genomics; 291; 4; 4-2016; 1607-1613
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