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Systematics Section / ASPT

Gutierrez, Raul [1].

Molecular systematics of Martyniaceae based on ITS sequences of nuclear ribosomal DNA.

Acceptance of the group Martyniaceae as a valid family has long been questioned. Often placed in the Pedaliaceae, the Martyniaceae have been allied to numerous other families, including the Gesneriaceae, Bignoniaceae, Acanthaceae, and Verbenaceae. Internal relationships within the Martyniaceae have not been explored using molecular data. For this study, sequences of nuclear ribosomal DNA from the Internal Transcribed Spacer (ITS) region were used to examine these relationships. Several samples from eight families were included (Acanthaceae, Bignoniaceae, Gesneriaceae, Lamiaceae, Lentibulariaceae, Martyniaceae, Pedaliaceae, and Verbenaceae). Within the Martyniaceae, all four genera (Craniolaria, Ibicella, Martynia, Proboscidea) were sampled. The largest genus, the genus Proboscidea, was emphasized. The results of this study indicate that Martyniaceae is a distinct lineage. Within the Martyniaceae, the South American genera Ibicella and Craniolaria clustered, as did the North American genera Proboscidea and Martynia. Within Proboscidea, acceptance of three infrageneric groups is supported.


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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

Keywords:
Martyniaceae, phylogeny, ITS.

Presentation Type: Poster
Session: 33-101
Location: Salon C, D & E - Gov Ballroom/Hilton
Date: Tuesday, August 16th, 2005
Time: 12:30 PM
Abstract ID:10


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