Gnidia(Thymelaeaceae) is not monophyletic: taxonomic implications for Thymelaeoideae and a partial new generic taxonomy forGnidia

Autor:	Olivier Maurin, Moleboheng C. Motsi, Marline Rautenbach, Angela J. Beaumont, Michael F. Fay, Trevor J. Edwards, John C. Manning, Michelle van der Bank, Mark W. Chase
Rok vydání:	2009
Předmět:	Monophyly biology Genus Polyphyly Botany Molecular phylogenetics Plant Science Internal transcribed spacer biology.organism_classification Pimelea Ecology Evolution Behavior and Systematics Gnidia Maximum parsimony
Zdroj:	Botanical Journal of the Linnean Society. 160:402-417
ISSN:	1095-8339 0024-4074
DOI:	10.1111/j.1095-8339.2009.00988.x
Popis:	We address the generic limits of Gnidia (Thymelaeaceae) through a phylogenetic analysis of nuclear ribosomal DNA internal transcribed spacer (ITS) and plastid rbcL, trnL intron and trnL-F intergenic spacer regions. Maximum parsimony and Bayesian inference were used to produce trees and assess internal support. The most significant conclusion drawn from the molecular analysis is that Gnidia is polyphyletic as currently circumscribed, comprising at least four distinct lineages that are each related to other genera within Thymelaeoideae. Gnidia pinifolia and G. racemosa are members of a clade within which Struthiola is embedded; a second group of species allies with Drapetes as sister to Passerina; and a third lineage corresponds to the previously recognized genus Lasiosiphon. The remaining species of Gnidia included in this study are allied with the Australian genus Pimelea. The taxonomic implications of these findings are discussed in relation to the principle of monophyly. © 2009 The Linnean Society of London, Botanical Journal of the Linnean Society, 2009, 160, 402–417.
Databáze:	OpenAIRE
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