RT Journal Article
T1 New insights into the systematics of the Schoenoxiphium clade (Carex, Cyperaceae)
A1 Villaverde, Tamara
A1 Maguilla Salado, Enrique
A1 Escudero, Marcial
A1 Márquez Corro, José Ignacio
A1 Jiménez Mejías, Pedro
A1 Gehrke, Berit
A1 Martín Bravo, Santiago
A1 Luceño Garcés, Modesto
K1 Phylogeny
K1 Species complex
K1 ITS
K1 ETS
K1 Taxonomy
AB The Schoenoxiphium clade (Carex, Cyperaceae) exhibits a high species diversity in South Africa and a complex taxonomy. Previous phylogenetic studies did not resolve the species relationships within the Schoenoxiphium clade due to the lack of informative characters in DNA markers used. Our aim is to resolve the species relationships within the Schoenoxiphium clade by adding information from more markers and more samples to information from previous studies.We sampled 19 out of 20 recognized species in the former genus Schoenoxiphium. Four DNA regions (two nuclear ribosomal: internal transcribed spacer, external transcribed spacer; two plastid: matK and rps16) were sequenced for 134 samples. Phylogenetic reconstruction was performed using Bayesian inference and maximum likelihood analyses.The monophyly of the Schoenoxiphium clade was confirmed. Five main clades with strong support were retrieved in congruence with a previous phylogeny. Although species relationships within these clades are still partially unresolved, our phylogeny highlights the need for the description of at least two new species in this group.The monophyly of the former genus Schoenoxiphium, taken together with its morphological synapomorphies and the recent phylogenetic studies and subsequent recircumscription of the genus Carex to include all nested genera, advises the consideration of this clade as a section (Carex sect. Schoenoxiphium Baillon). Additional investigations based on genomic sequencing are needed to fully resolve the species relationships within each of the five main clades.
PB University of Chicago Press
YR 2017
FD 2017-03-27
LK https://hdl.handle.net/10433/19895
UL https://hdl.handle.net/10433/19895
LA en
NO International Journal of Plant Science, vol 178, nº 4, p. 320-329
NO The Spanish Ministry of Science and Technology supported this research through the project CGL2012-38744 and CGL2016-77401-P to M. Luceño (Principal Investigator), E. Maguilla, M. Escudero, S. Martín-Bravo, and T. Villaverde and an FPU fellowship (AP2012-2189) from the Spanish Government (Ministryof Education, Culture, and Sport) and a Synthesys grant (GB-TAF-2523) by the European Community Research Infrastructure Program to E. Maguilla.
NO Departamento de Biología Molecular e Ingeniería Bioquímica, Universidad Pablo de Olavide
NO Departamento de Biología Vegetal y Ecología, Universidad de Sevilla
NO The New York Botanical Garden
NO Johannes Gutenberg-Universität
DS RIO
RD May 9, 2026