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Abstract Detail


Systematics Section

Archibald, Jenny K. [1].

Phylogeny and paraphyly in the southern African genus Zaluzianskya (Scrophulariaceae s.s.), with evidence from nucleotide and indel characters.

Phylogenetic relationships are explored within Zaluzianskya, a genus of ca. 55 species. Focus is given to supplementing previous analyses using additional chloroplast gene regions and both parsimony and maximum likelihood optimization, as well as increased population sampling. Analyses are conducted on data from different genomes (nuclear and chloroplast) and on nucleotide and indel characters; the utility of each type is shown both separately and combined. Results include the inferred paraphyly of Zaluzianskya, with nesting of some members of both Reyemia and Phyllopodium. With two and 26 species, respectively, the latter two genera occur within a subset of the range of Zaluzianskya and include notably diverged morphological features. Sampling multiple populations from species also revealed phylogenetic support for progenitor-derivative relationships in several groups, highlighting opportunities for study of speciation in these taxa.

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1 - University of Kansas, Department of Ecology and Evolutionary Biology and the Natural History Museum and Biodiversity Research Center, 1200 Sunnyside Avenue, Lawrence, Kansas, 66045, USA

Keywords:
Scrophulariaceae
Limoselleae
Zaluzianskya
ITS
cpDNA
South Africa
indel characters.

Presentation Type: Oral Paper:Papers for Sections
Session: 50
Location: 555A/Convention Center
Date: Wednesday, August 4th, 2010
Time: 10:45 AM
Number: 50011
Abstract ID:269


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