Détail de la notice
Titre du Document
A molecular phylogeny and a revised classification of the Mediterranean genus Anthemis s.l. (Compositae, Anthemideae) based on three molecular markers and micromorphological characters
Auteur(s)
LO PRESTI Rosa Maria ; OPPOLZER Stephanie ; OBERPRIELER Christoph
Résumé
A molecular phylogeny including c. 75% of all known species belonging to the closely related genera Anthemis and Cota (Compositae, Anthemideae) and based on nucleotide sequences from two plastid regions (psbA-trnH and trnC-petN spacers) and one nuclear marker (ITS) is presented. The molecular analyses were supplemented by a multivariate analysis of 25 micromorphological and anatomical characters. The results show incongruences among plastid and nuclear marker sets, which indicate that hybridisation may have played an important role in the evolution of this morphologically diverse plant group. However, molecular and morphological data both support a sister-group relationship between four perennial species (A. calcarea, A. fruticulosa, A. marschalliana, A. trotzkiana) and the main clades of Cota and Anthemis. We propose segregation of these from Anthemis as a new genus, Archanthemis. With the exclusion of these four taxa, both the nrDNA and the cpDNA datasets support the monophyly ofAnthemis. Further molecular and morphological evidence is provided for the generic independence of the genus Cota. The traditional infrageneric classifications of Anthemis and Cota are not entirely supported by the phylogenetic analyses as a picture of intense reticulate evolution among the different lineages emerges.
Editeur
International Association for Plant Taxonomy
Identifiant
ISSN : 0040-0262 CODEN : TAXNAP
Source
Taxon A. 2010, vol. 59, n° 5, pp. 1441-1456 [16 pages]
Langue
Anglais
Pour les membres de la communauté du CNRS, ce document est autorisé à la reproduction à titre gratuit.
Pour les membres des communautés hors CNRS, la reproduction de ce document à titre onéreux sera fournie sous réserve d’autorisation du Centre Français d’exploitation du droit de Copie.

Pour bénéficier de nos services (strictement destinés aux membres de la communauté CNRS (Centre National de la Recherche Scientifique), de l'ESR français (Enseignement Supérieur et Recherche), et du secteur public français & étranger) :