Skip Navigation



AOBPreview published online on February 23, 2004
Annals of Botany, doi:10.1093/aob/mch057
© 2004 by Annals of Botany Company
This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
93/4/407    most recent
mch057v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by MEVE, U.
Right arrow Articles by LIEDE, S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by MEVE, U.
Right arrow Articles by LIEDE, S.
Agricola
Right arrow Articles by MEVE, U.
Right arrow Articles by LIEDE, S.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Submitted on August 28, 2002
Revised on August 4, 2003
Accepted on January 16, 2004

Generic Delimitations in Tuberous Periplocoideae (Apocynaceae) from Africa and Madagascar

ULRICH MEVE1* and SIGRID LIEDE1

Affiliation of the authors: 1 Lehrstuhl für Pflanzensystematik, Universität Bayreuth, 95440 Bayreuth, Germany

* To whom correspondence should be addressed. E-mail: ulrich.meve{at}uni-bayreuth.de.

• Background and Aims The number of genera included in Apocynaceae subfamily Periplocoideae is a matter of debate. DNA sequences are used here as an independent dataset to clarify generic relationships and classification of the tuberous periplocoid genera and to address the question of the phylogenetic interpretation of pollinia formation in Schlechterella.

• Methods Representatives of nearly all African and Malagasy genera of Periplocoideae possessing root tubers were analysed using ITS and plastid DNA sequence characters.

• Key Results Sequence data from non-coding molecular markers (ITS of nrDNA and the trnT-L and trnL-F spacers as well as the trnL intron of plastid DNA) give support for a broad taxonomic concept of Raphionacme including Pentagonanthus. Together with Schlechterella, which is sister to Raphionacme, all Raphionacme-like taxa form a derived monophyletic group of somewhat diverse species. Sister to the Schlechterella/Raphionacme clade is a clade comprising Stomatostemma and the not truly tuberous vine Mondia. In the combined analysis, sister to these two clades combined is a clade formed by Petopentia natalensis and Periploca.

• Conclusions The recent inclusion of the monotypic South African Petopentia in the monotypic Malagasy endemic Ischnolepis is to be rejected. The Malagasy Camptocarpus is sister to the remainder of Periplocoideae in the ITS and combined analyses, and a Malagasy origin for the subfamily is discussed.
Key words: Africa, Apocynaceae, cpDNA, Ischnolepis, Madagascar, nrDNA, Raphionacme, Pentagonanthus, Periplocoideae, Petopentia, root tubers, sequence analysis, Schlechterella, Stomatostemma.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.