Affinities in C3Cyperus lineages (Cyperaceae) revealed using molecular phylogenetic data and carbon isotope analysis |
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| Authors: | ISABEL LARRIDON MARC REYNDERS WIM HUYGH KENNETH BAUTERS KOBEKE VAN DE PUTTE A. MUTHAMA MUASYA PASCAL BOECKX DAVID A. SIMPSON ALEXANDER VRIJDAGHS PAUL GOETGHEBEUR |
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| Affiliation: | 1. Ghent University, Department of Biology, Research Group Spermatophytes, K. L. Ledeganckstraat 35, 9000 Gent, Belgium;2. Ghent University, Department of Biology, Research Group Mycology, K. L. Ledeganckstraat 35, 9000 Gent, Belgium;3. University of Cape Town, Botany Department, Rondebosch 7700, South Africa;4. Ghent University, Faculty of Bioscience Engineering, Laboratory of Applied Physical Chemistry – ISOFYS, Coupure 653, 9000 Gent, Belgium;5. Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK;6. K.U.Leuven, Institute of Botany and Microbiology, Laboratory of Plant Systematics, Kasteelpark Arenberg 31, 3001 Leuven, Belgium |
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| Abstract: | Maximum likelihood and Bayesian analyses of nrDNA (ETS1f) and plastid DNA (rpl32‐trnL, trnH‐psbA) sequence data are presented for ‘C3Cyperus’ (Cyperaceae). The term ‘C3Cyperus’ indicates all species of Cyperus s.l. that use C3 photosynthesis linked with eucyperoid vegetative anatomy. Sampling comprises 77 specimens of 61 different taxa, representing nearly all previously recognized subdivisions of C3Cyperus and the segregate genera Courtoisina, Kyllingiella and Oxycaryum. According to our results, the Cyperus clade is divided in six well‐supported clades. The first of these clades (clade 1) forms three subclades largely corresponding to Cyperus sections Haspani, Incurvi and Diffusi. Clade 2 comprises the entirely New World C. section Luzuloidei sensu Denton (1978). Clade 3 is a highly diverse clade including two subclades: clade 3a, C. sections Pseudanosporum and Anosporum plus the segregate genera Courtoisina and Oxycaryum; and clade 3b, C. section Fusci. Clade 4 corresponds to C. section Alternifolii and clade 5 to C. section Leucocephali plus the segregate genus Kyllingiella. The sixth clade is a well‐supported monophyletic clade encompassing all C4Cyperus s.l. species (‘C4Cyperus’). This study establishes a phylogenetic framework for future studies. © 2011 The Linnean Society of London, Botanical Journal of the Linnean Society, 2011, 167 , 19–46. |
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| Keywords: | Bayesian inference Cypereae Cyperoideae molecular phylogeny photosynthetic pathway systematics |
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