English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/29801
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 | DATACITE
Exportar a otros formatos:

Title

Can Extensive Reticulation and Concerted Evolution Result in a Cladistically Structured Molecular Data Set?

AuthorsNieto Feliner, Gonzalo ; Fuertes Aguilar, Javier ; Rosselló, Josep A.
Issue Date15-Jul-2001
PublisherWiley-VCH
CitationCladistics 17: 301–312 (2001)
AbstractHierarchy is the main criterion for informativeness in a data set, even if no explicit reference to evolution as a causal process is provided. Sequence data (nuclear ribosomal DNA ITS) from Armeria (Plumbaginaceae) contains a certain amount of hierarchical structure as suggested by data decisiveness (DD) and distribution of tree lengths (DTL). However, ancillary evidence suggests that extensive gene flow and biased concerted evolution in these multi-copy regions have significantly shaped the ITS data set. This argument is discussed using parsimony analysis of four data sets, constructed by combining wild sequences with those from different generations of artificial hybrids (wild + F1, F2, and backcrosses; wild + backcrosses; wild + F1; wild + F2). As compared to the F1 hybrids, F2 show a certain degree of homogenization in polymorphic sites. This effect reduces topological disruption caused by F1 and is considered to be illustrative of how extensive gene flow and biased concerted evolution may have modeled the wild ITS data. The possibility that hierarchy has arisen as a result of ⎯or despite a significant contribution from⎯ those two such potentially perturbing forces raises the question of what kind of signal are we recovering from this molecular data set.
Publisher version (URL)http://onlinelibrary.wiley.com/doi/10.1111/j.1096-0031.2001.tb00128.x/pdf
URIhttp://hdl.handle.net/10261/29801
DOI10.1006/clad.2001.0182
E-ISSN1096-0031
Appears in Collections:(RJB) Artículos
Files in This Item:
File Description SizeFormat 
2001_Nieto_Cladistics_17_301-312.pdf738,14 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


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