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Taxonomic considerations on Metastelmatinae (Apocynaceae) based on plastid and nuclear DNA

Title data

Soares e Silva, Uiara Catharina ; Rapini, Alessandro ; Liede-Schumann, Sigrid ; Ribeiro, Patrícia Luz ; van den Berg, Cassio:
Taxonomic considerations on Metastelmatinae (Apocynaceae) based on plastid and nuclear DNA.
In: Systematic Botany. Vol. 37 (2012) Issue 3 . - pp. 795-806.
ISSN 1548-2324
DOI: https://doi.org/10.1600/036364412X648733

Abstract in another language

The Metastelmatinae (Asclepiadoideae, Apocynaceae) include 13 genera and approximately 260 species with complex morphological affinities that are broadly distributed in the Neotropics. This study investigated phylogenetic relationships within this subtribe using plastid (trnT-F, trnS-G, trnH-psbA, trnD-T, rps16, and matK) and nuclear (ITS) markers. The taxonomic sampling focused on the South American species, and included approximately 25% of the subtribe. Individual data partitions, and combined datasets were analyzed using Bayesian inference, maximum likelihood, and maximum parsimony. The results indicated that most genera of Metastelmatinae are not monophyletic. Internal relationships in the subtribe and key morphological characters used in the taxonomy of the group are discussed. The lack of resolution in the molecular phylogeny, incongruent phylogenetic signals between plastid and nuclear datasets, and the lack of morphological features for individual clades prevented major taxonomic changes in this group, those of which were restricted to the inclusion of Barjonia harleyi and Hemipogon harleyi into Minaria forming the new combinations Minaria harleyi and M. volubilis, and the synonymy of Macroditassa under Peplonia with the new combinations Peplonia adnata and P. macrophylla.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER108851
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Systematics
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Systematics > Chair Plant Systematics - Univ.-Prof. Dr. Sigrid Liede-Schumann
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 06 Jul 2015 10:24
Last Modified: 24 Sep 2015 13:03
URI: https://eref.uni-bayreuth.de/id/eprint/15825