English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/99855
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Complex structural features of satellite DNA sequences in the genus Pimelia (Coleoptera: Tenebrionidae): Random differential amplification from a common 'satellite DNA library'

AuthorsPons, Joan ; Bruvo-Madaric, Branka; Petitpierre, Eduard ; Plohl, Miroslav; Ugarkovic, Durdica; Juan, Carlos
KeywordsSatellite DNA
Repeat unit rearrangements
Pimelia
Coleoptera
Issue Date2004
PublisherNature Publishing Group
CitationHeredity 92(5): 418-427 (2004)
AbstractThe major satellites of the nine species of the subgenera Pimelia s. str. and Amblyptera characterised in this paper are composed of longer monomers (500 and 700 bp) than those described previously in 26 Pimelia s. str. taxa (357 bp, a sequence called PIM357). Sequence analysis reveals partial similarity among these satellites and with the PIM357 monomers. The discrepancy between the phylogeny obtained based on three mitochondrial and two nuclear markers and that deduced from satellite DNA (stDNA) sequences suggests that the different Pimelia satellites were already present in a common ancestor forming what has been called a 'satellite DNA library'. Thus, the satellite profiles in the living species result from a random amplification of sequences from that 'library' during diversification of the species. However, species-specific turnover in the sequences has occurred at different rates. They have included abrupt replacements, a gradual divergence and, in other cases, no apparent change in sequence composition over a considerable evolutionary time. The results also suggest a common evolutionary origin of all these Pimelia satellite sequences, involving several rearrangements. We propose that the repeat unit of about 500 bp has originated from the insertion of a DNA fragment of 141 bp into the PIM357 unit. The 705-bp repeats have originated from a 32-bp direct duplication and the insertion of a 141-bp fragment in inverted orientation relative to a basic structure of 533 bp.
URIhttp://hdl.handle.net/10261/99855
DOI10.1038/sj.hdy.6800436
Identifiersdoi: 10.1038/sj.hdy.6800436
issn: 0018-067X
Appears in Collections:(IMEDEA) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.