Gutierrez, Raul .
Molecular Systematics of the family Martyniaceae (order Lamiales) using nuclear and chloroplast DNA sequences.
The family Martyniaceae (order Lamiales) consists of about 15 taxa in 5 genera. Native to the New World, it is found primarily in subtropical and warm temperate areas of North and South America. The most outstanding characteristic of the family is the presence of woody, beaked fruits that dehisce longitudinally along abiaxal and adiaxal sutures and produce two sharp-pointed, hooked horns when the beak splits. One region from nuclear DNA (Internal Transcribed Spacer) and three chloroplast DNA regions (psbA-trnH intergenic spacer, trnQ-rps16 intergenic spacer, and trnS-G-G intergenic spacer and intron) were used to examine relationships within the family. Included in this study were representatives from all five genera and the three sections of the largest genus in the family. Representatives from the genera Glandularia and Thomandersia were used as outgroups. The resulting phylogenetic hypotheses suggest that the three South American genera, Holoregmia, Ibicella, and Craniolaria, form a clade that is sister to another clade formed by the two North American genera, Martynia and Proboscidea. Within the genus Proboscidea, the three sections are monophyletic, though the parviflora-complex within the “weedy annuals” group does not appear to be monophyletic.
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1 - Arizona State University, School of Life Sciences Graduate Programs, Asu, Main Campus, Po Box 874601, Tempe, Arizona, 85287-4601, USA
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trnQ-rps16 intergenenic spacer.
Presentation Type: Poster:Posters for BSA Sections
Location: Event Tent/Cliff Lodge
Date: Monday, July 27th, 2009
Time: 5:30 PM