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Evolutionary relationships in the Spermacoceae alliance (Rubiaceae) using information from six molecular loci: insights into systematic affinities of Neohymenopogon and Mouretia
Stockholm University, Faculty of Science, Department of Botany.
Stockholm University, Faculty of Science, Department of Botany. Stockholm University, Faculty of Science, The Bergius Botanical Garden Museum. (Bergius Foundation)
Stockholm University, Faculty of Science, Department of Botany. Stockholm University, Faculty of Science, The Bergius Botanical Garden Museum. (Bergius Foundation)
Stockholm University, Faculty of Science, Department of Botany. Stockholm University, Faculty of Science, The Bergius Botanical Garden Museum. (Bergius Foundation)
2009 (English)In: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 58, no 3, 793-810 p.Article in journal (Refereed) Published
Abstract [en]

Several recent phylogenetic studies of Rubiaceae have dealt with enigmatic taxa whose systematic positions have been previously unknown or controversial. We address evolutionary relationships in the Spermacoceae alliance (Rubioideae) with special emphasis on the Asian genera Mouretia and Neohymenopogon, here sequenced for the first time. Both genera belong in the tribe Argostemmateae and have persistent calyx lobeson the fruit in common with Argostemma and Mycetia. Other previous uncertainties are resolved with strong support; Saprosma is sister to Paederieae s.str. and Carpacoce is sister to remaining Anthospermeae. Our results further reveal some phylogenetic problems. Danaideae is sister to remaining taxa in the Spermacoceae alliance with high posterior probability, which contradicts results in a recent study. The uncertainty concerning evolutionary relationships of Dunnia and Theligonum is reinforced, despite a denser taxon sampling in the Spermacoceae alliance compared with earlier studies. We also demonstrate yet another example of the controversial correlation between molecular substitution rate and plant life history.

Place, publisher, year, edition, pages
Wien: International Association for Plant Taxonomy , 2009. Vol. 58, no 3, 793-810 p.
Keyword [en]
Anthospermeae, Argostemmateae, Danaideae, Paederieae, rate heterogeneity, Saprosma, Theligonum
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:su:diva-36171ISI: 000269774900009OAI: oai:DiVA.org:su-36171DiVA: diva2:288908
Available from: 2010-01-22 Created: 2010-01-22 Last updated: 2017-12-12Bibliographically approved

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Rydin, CatarinaRazafimandimbison, SylvainKhodabandeh, AnbarBremer, Birgitta
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