Publications des scientifiques de l'IRD

Stull G. W., Johnson D. M., Murray N. A., Couvreur Thomas, Reeger J. E., Roy C. M. (2017). Plastid and seed morphology data support a revised infrageneric classification and an african origin of the pantropical genus Xylopia (Annonaceae). Systematic Botany, 42 (2), p. 211-225. ISSN 0363-6445.

Titre du document
Plastid and seed morphology data support a revised infrageneric classification and an african origin of the pantropical genus Xylopia (Annonaceae)
Année de publication
2017
Type de document
Article référencé dans le Web of Science WOS:000402790600001
Auteurs
Stull G. W., Johnson D. M., Murray N. A., Couvreur Thomas, Reeger J. E., Roy C. M.
Source
Systematic Botany, 2017, 42 (2), p. 211-225 ISSN 0363-6445
The floristic treatment of Engler and Diels, published in 1901, provides the only infrageneric classification of the pantropical genus Xylopia (Annonaceae). Here we test and extend that classification using molecular and seed morphology characters. Phylogenetic relationships were reconstructed using data from four plastid regions obtained from 44 of the approximately 165 species in the genus, recovering four well-supported major clades. Seed characters were examined for these taxa, and six aril morphologies, three previously undocumented, were distinguished; we also document the presence of a sarcotesta on the seeds of many species. Molecular and seed data support recognition of five sections within the genus; one, Xylopia sect. Rugosperma, is proposed here as new. Our phylogenetic results suggest an African origin for the genus and reveal complex biogeographic patterns, likely facilitated by long-distance dispersal.
Plan de classement
Sciences du monde végétal [076] ; Etudes, transformation, conservation du milieu naturel [082]
Description Géographique
AFRIQUE ; ASIE, AUSTRALIE ; MADAGASCAR ; MASCAREIGNE ; AMERIQUE ; ZONE TROPICALE
Localisation
Fonds IRD [F B010070184]
Identifiant IRD
fdi:010070184
Contact