Lavoie, Elizabeth , Martine, Christopher T. .
A new species of Australian Solanum, with potential implications for the evolution of a rare breeding system.
Among the 2100 species in Solanaceae, dioecy can be found in only 1% of species throughout five genera. Of these, the genus Solanum has the highest abundance of dioecy, with around fifteen species described as exhibiting this uncommon condition. Ten of these Solanum species are endemic to northern, sub-arid Australia. On a recent expedition to the Northern Territory, non-reproductive collections were made of a potentially new taxon of Solanum in Litchfield National Park. We have generated the first DNA sequences of this potentially new species using the ITS (nuclear) and trnK-matK (chloroplast) gene regions. Phylogenetic analyses comparing the new taxon to previously sequenced relatives confirm that this species is distinct. Likewise, the phylogenetic placement of Solanum sp. “Litchfield” allows us to infer that the species is dioecious, thus broadening our understanding of the distribution and history of dioecious lineages in Australia.
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1 - State University of New York at Plattsburgh, Biological Sciences, 101 Broad Street, Plattsburgh, NY, 12901, USA
2 - SUNY Plattsburgh, Department of Biological Sciences, 101 Broad Street, Plattsburgh, NY, 12901, USA
Presentation Type: Poster:Posters for Sections
Location: Hall A/Convention Center
Date: Monday, August 2nd, 2010
Time: 5:30 PM