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Phylogenetic relationships and new tribal delimitations in subfamily Ixoroideae (Rubiaceae)
Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences. Stockholm University, Faculty of Science, The Bergius Botanical Garden Museum.
Stockholm University, Faculty of Science, The Bergius Botanical Garden Museum. Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences.
Stockholm University, Faculty of Science, Department of Ecology, Environment and Plant Sciences. Stockholm University, Faculty of Science, The Bergius Botanical Garden Museum.
2013 (English)In: Botanical journal of the Linnean Society, ISSN 0024-4074, E-ISSN 1095-8339, Vol. 173, no 3, 387-406 p.Article in journal (Refereed) Published
Abstract [en]

Subfamily Ixoroideae is one of three major lineages in Rubiaceae, with approximately 4000 species. Previous molecular phylogenetic studies have indicated that many genera and tribes previously placed in other subfamilies are better considered as part of Ixoroideae. However, the internal resolution and clade support have generally been low, and several genera found to be nested in the subfamily do not appear to be associated with any described tribe. In order to resolve the phylogeny and assess the tribal delimitations in the expanded Ixoroideae, phylogenetic reconstructions were performed using Bayesian and parsimony analyses of six plastid DNA regions and a broad sampling of genera from all tribes of the subfamily. In the inferred phylogenetic hypotheses, the tribal relationships were mostly well supported, with Ixoroideae consisting of the Coffeeae and the Vanguerieae alliances as sister groups and a grade comprising Condamineeae, Henriquezieae, Posoquerieae, Retiniphylleae, Sipaneeae and the genus Steenisia. A revised tribal classification, including the description of five new tribes, Airospermeae, Augusteae, Scyphiphoreae, Steenisieae and Trailliaedoxeae, is provided.

Place, publisher, year, edition, pages
2013. Vol. 173, no 3, 387-406 p.
Keyword [en]
Airospermeae, Augusteae, molecular phylogenetics, Scyphiphoreae, Steenisieae, systematics, Trailliaedoxeae
National Category
Botany
Identifiers
URN: urn:nbn:se:su:diva-96082DOI: 10.1111/boj.12038ISI: 000325691200003OAI: oai:DiVA.org:su-96082DiVA: diva2:664266
Note

AuthorCount:3;

Funding agencies;

The Knut and Alice Wallenberg Foundation;  Swedish Research Council 

Available from: 2013-11-14 Created: 2013-11-11 Last updated: 2017-12-06Bibliographically approved

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Kainulainen, KentRazafimandimbison, Sylvain G.Bremer, Birgitta
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Department of Ecology, Environment and Plant SciencesThe Bergius Botanical Garden Museum
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