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Abstract Detail


Systematics Section

Scheen, Anne-Cathrine [1], Oxelman, Bengt [1].

Reticulate evolution in the genus Fumaria (Papaveraceae).

The genus Fumaria (Papaveraceae) includes 50 species with ploidal levels ranging from the diploid (2x) to the tetradecaploid (14x) level and every ploidal level represented except the dodecaploid (12x). The genus was subjected to a taxonomic revision in 1986 when two sections were recognized. Based on morphological similarity and ploidal levels, hypotheses of the origin of a few of the polyploid species have been proposed. To date no phylogenetic analysis of the genus has been performed and the hypotheses on polyploid origins in the genus remain untested. We present a phylogenetic analysis of cpDNA sequences (the trnL-F intron/spacer region, part of the matK gene, rpoC1, and the rps16 intron), which recovered several well-supported clades. Although the two sections of Fumaria are not recovered as monophyletic groups, some of the clades correspond to suggested species complexes. However, the cpDNA data can only elucidate the maternal heritage and gene trees based on nuclear genes are likely to reveal different groups and different relationships among the investigated species. Gene trees of several unlinked low-copy nuclear genes will be presented and the hypotheses of polyploid origins in the genus will be addressed.


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1 - University of Gothenburg, Deptartment of Plant and Environmental Scineces, Box 461, Gothenburg, SE-40530, Sweden

Keywords:
Fumaria
phylogeny
polyploidy
reticulate evolution.

Presentation Type: Oral Paper:Papers for BSA Sections
Session: 56
Location: Cottonwood C/Snowbird Center
Date: Wednesday, July 29th, 2009
Time: 9:15 AM
Number: 56006
Abstract ID:321


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