Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/94240
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Ascidian Mitogenomics: Comparison of Evolutionary Rates in Closely Related Taxa Provides Evidence of Ongoing Speciation Events |
Autor: | Griggio, Francesca; Voskoboynik, Ayelet; Iannelli, Fabio; Justy, Fabienne; Marie-Ka, Tilak; Turon, Xavier CSIC ORCID ; Pesole, Graziano; Douzery, Emmanuel J.P.; Mastrototaro, Francesco; Gissi, Carmela | Palabras clave: | Evolutionary rate Species identification Ascidian Mitochondrial genome |
Fecha de publicación: | 2014 | Editor: | Oxford University Press | Citación: | Genome Biology and Evolution 6(3) : 591-605 (2014) | Resumen: | Ascidians are a fascinating group of filter-feedingmarine chordates characterized by rapid evolution of both sequences and structure of their nuclear andmitochondrial genomes.Moreover, they include several model organisms used to investigate complex biological processes in chordates. To study the evolutionary dynamics of ascidians at short phylogenetic distances, we sequenced 13 new mitogenomes and analyzed them, together with 15 other availablemitogenomes, using a novel approach involving detailedwholemitogenome comparisons of conspecific and congeneric pairs. The evolutionary rate was quite homogeneous at both intraspecific and congeneric level, and the lowest congeneric rateswere found in cryptic (morphologically undistinguishable) and inmorphologically very similar species pairs. Moreover, congeneric nonsynonymous rates (dN)were up to two orders ofmagnitude higher than in intraspecies pairs. Overall, a clear-cut gap sets apart conspecific from congeneric pairs. These evolutionary peculiarities allowed easily identifying an extraordinary intraspecific variability in the model ascidian Botryllus schlosseri, where most pairs show a dN value between that observed at intraspecies and congeneric level, yet consistently lower than that of the Ciona intestinalis cryptic species pair. These data suggest ongoing speciation events producing genetically distinct B. schlosseri entities. Remarkably, these ongoing speciation events were undetectable by the cox1 barcode fragment, demonstrating that, at low phylogenetic distances, the whole mitogenomehas a higher resolvingpower than cox1.Our study showsthatwhole-mitogenomecomparative analyses, performedon a suitable sample of congeneric and intraspecies pairs, may allow detecting not only cryptic species but also ongoing speciation events. | Descripción: | 15 páginas, 6 figuras, 2 tablas. | Versión del editor: | http://dx.doi.org/10.1093/gbe/evu041 | URI: | http://hdl.handle.net/10261/94240 | DOI: | 10.1093/gbe/evu041 | ISSN: | 1759-6653 | E-ISSN: | 1759-6653 |
Aparece en las colecciones: | (CEAB) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
griggio et al 2014.pdf | 919,26 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
PubMed Central
Citations
11
checked on 18-mar-2024
SCOPUSTM
Citations
39
checked on 16-mar-2024
WEB OF SCIENCETM
Citations
38
checked on 28-feb-2024
Page view(s)
293
checked on 18-mar-2024
Download(s)
238
checked on 18-mar-2024
Google ScholarTM
Check
Altmetric
Altmetric
Artículos relacionados:
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.