Bittner L. auteur aut IRD Payri Claude auteur aut IRD Couloux A. auteur aut IRD Cruaud C. auteur aut IRD Reviers de B. auteur aut IRD Rousseau F. auteur aut IRD text journalArticle eng text/pdf born digital access For the first time, on the basis of nuclear, plastid and mitochondrial sequence data, the most comprehensive molecular phylogeny of the Dictyotales to date is presented, in a broad context where all brown algal orders are included (except Discosporangiales, Ascoseirales and Nemodermatales). A veto supertree approach was used here to evaluate congruency and conflicts between genes: phylogenetic signal was congruent and mainly carried by chloroplastic information. Supermatrix analyses (BI, ML and MP) revealed that Dictyotales is sister to Onslowiales, this ensemble being sister of a clade also encompassing Sphacelariales and Syringodermatales. The family Scoresbyellaceae is merged into the family Dictyotaceae. Furthermore, the current subdivision of the Dictyotaceae into two tribes was not supported. The enigmatic genus Stoechospermum was shown to belong to the same clade as Dictyota, Rugulopteryx, Scoresbyella and Canistrocarpus. Homoeostrichus and Dictyopteris did not appear monophyletic. Zonaria stipitata clustered with the Spatoglossum species; since this is consistent with its morphological features, the new combination Spatoglossum stipitatum is proposed accordingly. specialized Coxl-5 ' Dictyopteris Dictyotales Homoeostrichus Lsu rdna Onslowiales Psaa Rbcl Spatoglossum Stoechospermum Zonaria stipitata 020 076 49 1 211-226 2008 1055-7903 https://www.documentation.ird.fr/hor/fdi:010044068 10.1016/j.ympev.2008.06.018 1055-7903 [F B010044068] https://www.documentation.ird.fr/hor/fdi:010044068 https://www.documentation.ird.fr/intranet/publi/2008/11/010044068.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2008-12-05 2022-04-05 fdi:010044068 fre