Systematics/Phytogeography / Taxonomie/ Section
Gray, Antionette C , Wheeler, Erica J , Kinney, Michael S. , Pires, J. Chris .
Resolution of phylogenetic patterns within the monocot order Asparagales.
The monocot order Asparagales is an economically important group that includes onions (Allium), Asparagus, Agave and ornamental plants such as orchids, daffodils, and irises. The core Asparagales is composed of two well-supported clades, Alliaceae s.l. (Agapanthaceae, Alliacae s.s., Amaryllidaceae) and Asparagaceae s.l. (Agavaceae, Aphyllanthaceae, Asparagaceae s.s., Hyacinthaceae, Laxmanniaceae, Ruscaceae, and Themidaceae). Questions remain about the evolutionary origin, patterns of morphological divergence, geographic diversification, and ecological radiation of this group. Current phylogenetic studies based on six chloroplast and one mitochondrial gene region leave relationships among some families inadequately supported at several ambiguous nodes. In an effort to resolve these relationships, we sequenced an additional chloroplast region (rpL14-rpL 36) and the low-copy nuclear gene PHYTOCHROME C (PHY C) across taxa representing all ten core Asparagales families and outgroups. We conducted independent phylogenetic analyses of these regions and combined these new data with data from previous studies. Our combined phylogeny may potentially resolve evolutionary relationships to help interpret patterns of morphological diversification and biogeographical distribution among core Asparagales lineages.
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1 - University of Missouri, Biological Sciences, 1201 East Rollins, 311 Christopher S Bond Life Sciences Center, Columbia, Missouri, 65211, USA
2 - University of Missouri, Biological Sciences, 1201 East Rollins Road, 311 Christopher S Bond Life Sciences Center, Columbia, Missouri, 65211, USA
3 - University of Missouri-Columbia, Biological Sciences, 311 Life Sciences Center, 1201 Rollins St, Columbia, MO, 65211, USA
4 - University of Missouri Columbia, Biological Sciences, 1201 Rollins Road, Life Sciences Center 311, Columbia, Missouri, 65211, USA
Presentation Type: Poster:Posters for Sections
Location: Ball Room & Party Room/SUB
Date: Monday, July 28th, 2008
Time: 12:30 PM