Please use this identifier to cite or link to this item:
logo share SHARE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Phylogeny, biogeography, and character evolution in mediterranean, asiatic, and macaronesian Helichrysum (Asteraceae, Gnaphalieae) inferred from nuclear phylogenetic analyses

AuthorsGalbany-Casals, Mercè CSIC ORCID; Garcia-Jacas, Núria CSIC ORCID ; Sáez, Llorenç; Benedí González, Carles; Susanna de la Serna, Alfonso CSIC ORCID
Canary Islands
Issue Date2009
PublisherUniversity of Chicago Press
CitationInternational Journal of Plant Sciences 170(3): 365–380 (2009)
Abstract[EN] The genus Helichrysum has 500–600 species in Africa, Madagascar, the Mediterranean basin, Macaronesia, western and central Asia, and India. The aims of this study are to confirm the exclusion of Castroviejoa from Helichrysum, to elucidate the origin of the Macaronesian endemics, to confirm the monophyly of the Mediterranean-Asiatic group, and, within this group, to contrast molecular data with sectional classification and to provide insight into trends in character evolution and biogeography. To address these issues, ITS and ETS sequences were used in phylogenetic analyses. Results show that Castroviejoa is excluded from Helichrysum. The phylogeny obtained suggests a southern African origin for Helichrysum and several subsequent migrations throughout the African continent. The species from the Canary Islands do not form a monophyletic clade, suggesting that at least two independent colonization events occurred. Helichrysum makranicum, from Oman and southern Iran, is the closest relative of a clade consisting of two endemics of the Canary Islands, providing new evidence of the phytogeographical links between Macaronesia and eastern Africa–southern Arabia. Helichrysum gossypinum, the third endemic of the Canary Islands, is the sister species of a monophyletic Mediterranean and Asiatic group, with the four endemics of Madeira sister to all of them.Within the Mediterranean-Asiatic clade, sect. Stoechadina is monophyletic, but sect. Helichrysum and sect. Virginea are not. Once in the Mediterranean region, the genus is hypothesized to have diversified and expanded to the east up to western and central Asia and to have suffered a reduction in woodiness.
Description16 p., Online enhancement: appendix table.
Publisher version (URL)
Appears in Collections:(IBB) Artículos

Files in This Item:
File Description SizeFormat
Galbany et al_Helichrysum__2009.pdf4,03 MBAdobe PDFThumbnail
Show full item record
Review this work

Page view(s)

checked on May 19, 2022


checked on May 19, 2022

Google ScholarTM


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