Groff, Paul A. , Hale, Amanda M. , Whitlock, Barbara A. .
Chloroplast lineages in disjunct western North American populations of Swertia perennis L. (Gentianaceae).
Swertia perennis ranges discontinuously across Eurasia to the mountains of western North America, in a series of geographic isolates sometimes recognized as distinct taxa. We sequenced chloroplast markers trnL, trnL-trnF, and trnH-psbA from 26 North American populations of S. perennis, two Altai populations, and ten outgroup taxa, and analyzed these data with previously published sequences. The trnL-trnF spacer does not vary in our sample of North American S. perennis, but varies elsewhere. The trnL intron yields four North American haplotypes; one of these also occurs in the Altai. Combining trnL, trnLF and trnH-psbA yields 11 distinct haplotypes from North America and two additional ones from the Altai. Parsimony analyses resolve rooted phylogenies of chloroplast lineages within North American S. perennis. ¬†In our sample, some lineages have well-characterized, non-overlapping geographic ranges. Further sampling will likely reveal additional haplotypes and polymorphism within populations or geographic areas, but this study lays a foundation for investigations of phylogenetic biogeography in S. perennis and co-distributed species of Gentianaceae.
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1 - University of Miami, Department of Biology, Coral Gables, FL, 33124, USA
2 - Texas Christian University, Department of Biological Sciences, Fort Worth, TX, 76129, USA
mountain wet meadows
Presentation Type: Poster:Posters for Sections
Location: Hall A/Convention Center
Date: Monday, August 2nd, 2010
Time: 5:30 PM