English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/243486
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

Polyploidy in gymnosperms – Insights into the genomic and evolutionary consequences of polyploidy in Ephedra

AuthorsIckert-Bond, Stefanie M.; Sousa, Aretuza; Min, Ya; Loera, Israel; Metzgar, Jordan; Pellicer, Jaume; Hidalgo, Oriane CSIC ORCID; Leitch, Ilia J.
KeywordsPolyploidy
C-value
Ephedra
Chromosomes
Genome size
Gymnosperm
Issue Date2-Mar-2020
PublisherElsevier
CitationMolecular Phylogenetics and Evolution 147 (2020), 106786
AbstractWhile polyploidization is recognized as a major evolutionary driver for ferns and angiosperms, little is known about its impact in gymnosperms, where polyploidy is much less frequent. We explore Ephedra to evaluate (i) the extent of genome size diversity in the genus and the influence polyploidy has had on the evolution of nuclear DNA contents, and (ii) identify where shifts in genome size and polyploidy have occurred both temporally and spatially. A phylogenetic framework of all Ephedra species together with genome sizes and karyotypes for 87% and 67% of them respectively, were used to explore ploidy evolution and its global distribution patterns. Polyploidy was shown to be extremely common, with 41 species (83%) being polyploid (up to 8×) or having polyploid cytotypes – the highest frequency and level reported for any gymnosperm. Genome size was also diverse, with values ranging ~5-fold (8.09–38.34 pg/1C) – the largest range for any gymnosperm family – and increasing in proportion to ploidy level (i.e. no genome downsizing). Our findings provide novel data which support the view that gymnosperms have a more conserved mode of genomic evolution compared with angiosperms.
Publisher version (URL)http://dx.doi.org/10.1016/j.ympev.2020.106786
URIhttp://hdl.handle.net/10261/243486
Identifiersdoi: 10.1016/j.ympev.2020.106786
issn: 1055-7903
Appears in Collections:(IBB) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 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.