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Timetree of Rubiaceae - Phylogeny and dating the family, subfamilies and tribes
Stockholm University, Faculty of Science, The Bergius Botanical Garden Museum. Stockholm University, Faculty of Science, Department of Botany. (Bergius Foundation)
Stockholm University, Faculty of Science, The Bergius Botanical Garden Museum. Stockholm University, Faculty of Science, Department of Botany. (Bergius Foundation)
2009 (English)In: International journal of plant sciences, ISSN 1058-5893, E-ISSN 1537-5315, Vol. 170, no 6, 766-793 p.Article in journal (Refereed) Published
Abstract [en]

Rubiaceae are one of the largest families of plants, with ;13,000 species. In this study, we have estimated the phylogeny for 534Rubiaceae taxa from329 generawith up to five different chloroplast regions by Bayesian analysis. It resulted in a highly resolved tree with many strongly supported nodes. There is strong support for the three subfamilies (Cinchonoideae, Ixoroideae, Rubioideae) and most of the 44 included tribes. A scaled-down data set of 173 Rubiaceae taxawas usedwith a Bayesian approach to estimate divergence times for clades classified as tribes and subfamilies. Four fossils were used as minimum age priors, one inside each subfamily and one for Rubiaceae as a whole (Faramea-type pollen, Scyphiphora pollen, Cephalanthus pusillus fruits, and Paleorubiaceophyllum eocenicum leaves). The estimated lineage (stem) divergence time for Rubiaceae is 90.4Ma. The estimated lineage divergence times for the subfamilies are 84.4 (86.6)Ma for Rubioideae, 73.1Ma for Ixoroideae, and 73.1Ma for Cinchonoideae.The estimated lineage divergence times for the tribes vary between 86.6 and 14.2Ma. Classification, relationships, geographical distribution, and age estimates are presented and discussed for all tribes.

Place, publisher, year, edition, pages
2009. Vol. 170, no 6, 766-793 p.
Keyword [en]
Rubiaceae, dating, divergence times, Bayesian inference, phylogeny
National Category
Biological Systematics
Research subject
Systematic Botany
Identifiers
URN: urn:nbn:se:su:diva-36152DOI: 10.1086/599077ISI: 000267285200008OAI: oai:DiVA.org:su-36152DiVA: diva2:288869
Available from: 2010-01-22 Created: 2010-01-22 Last updated: 2017-12-12Bibliographically approved

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Bremer, BirgittaEriksson, Torsten
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