Large-scale phylogenetic analysis of Amorphophallus (Araceae) derived from nuclear and plastid sequences reveals new subgeneric delineation

Détails

ID Serval
serval:BIB_E86259537C08
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Large-scale phylogenetic analysis of Amorphophallus (Araceae) derived from nuclear and plastid sequences reveals new subgeneric delineation
Périodique
Botanical Journal of the Linnean Society
Auteur(s)
Claudel C., Buerki S., Chatrou L.W., Antonelli A., Alvarez N., Hetterscheid W.
ISSN
1095-8339
ISSN-L
0024-4074
Statut éditorial
Publié
Date de publication
2017
Peer-reviewed
Oui
Volume
184
Numéro
1
Pages
32-45
Langue
anglais
Résumé
Remarkably little is known about the evolution of the emblematic genus Amorphophallus. To shed new light on phylogenetic relationships between species of Amorphophallus and test its current classification, the first well-sampled molecular phylogenetic analysis is presented here, comprising 157 species for which we generate nuclear (ITS1) and plastid (rbcL and matK) sequences. Our combined plastid and nuclear maximum likelihood and Bayesian inferences provide a solid backbone for subgeneric delineation in supporting the existence of four major clades. These latter clades are here formally recognized as subgenera (two of which are new): Amorphophallus, Metandrium, Scutandrium and Afrophallus. Each subgenus is discussed based on selected morphological features and additional traits (e.g. distribution). Finally, our results strongly support the inclusion of the genus Pseudodracontium in Amorphophallus and the required taxonomic changes are proposed here. In addition to clarifying species relationships in Amorphophallus and proposing a new infrageneric classification, this study provides a baseline for researchers working on the evolution and biogeography of Araceae and more broadly on the tropical flora, especially in Southeast Asia.
Mots-clé
Afrophallus, Amorphophallus, Araceae, Bayesian inference, classification, maximum likelihood, Metandrium, Pseudodracontium, Scutandrium
Web of science
Open Access
Oui
Création de la notice
09/05/2017 9:17
Dernière modification de la notice
09/05/2019 2:48
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