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Journal article
Phylogeny and systematics of the Rauvolfioideae (Apocynaceae) based on molecular and morphological evidence
Annals of the Missouri Botanical Garden, v 94(2), pp 268-297
01 Jan 2007
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Abstract
To elucidate deeper relationships within Rauvolfioideae (Apocynaceae), a phylogenetic analysis was conducted using sequences from five DNA regions of the chloroplast genome (matK,rbcL,rpl16]intron,rps]16 intron, and 3' trnK intron), as well as morphology. Bayesian and parsimony analyses were performed on sequences from 50 taxa of Rauvolfioideae and 16 taxa from Apocynoideae. Neither subfamily is monophyletic, Rauvolfioideae because it is a grade and Apocynoideae because the subfamilies Periplocoideae, Secamonoideae, and Asclepiadoideae nest within it. In addition, three of the nine currently recognized tribes of Rauvolfioideae (Alstonieae, Melodineae, and Vinceae) are polypbyletic. We discuss morphological characters and identify pervasive homoplasy, particularly among fruit and seed characters previously used to delimit tribes in Rauvolfioideae, as the major source of incongruence between traditional classifications and our phylogenetic results. Based on our phylogeny, simple style-heads, synearpous ovaries, indehiscent fruits, and winged seeds have evolved in parallel numerous times. A revised classification is offered for the subfamily, its tribes, and inclusive genera.
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Details
- Title
- Phylogeny and systematics of the Rauvolfioideae (Apocynaceae) based on molecular and morphological evidence
- Creators
- Andre O. SimoesTatyana Livshultz - University of ZurichElena Conti - University of ZurichMary E. Endress
- Publication Details
- Annals of the Missouri Botanical Garden, v 94(2), pp 268-297
- Publisher
- Missouri Botanical Garden
- Number of pages
- 30
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES)
- Web of Science ID
- WOS:000248474400002
- Scopus ID
- 2-s2.0-34248527860
- Other Identifier
- 991019350665904721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Plant Sciences