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Abstract Detail


Systematics Section

Wolfe, Andrea [1], Necamp, Timothy [1], Fassnacht, Susan [1], Kubatko, Laura [1].

Conservation genetics of Penstemon albomarginatus (Plantaginaceae) - a rare species of the Mohave desert.

Hyobanche L. is a small genus of holoparasitic plants distributed across southern Africa. It is found in a variety of ecosystems ranging from coastal sand dunes to fynbos biomes, the Little and Great Karoos, and into the highlands Lesotho. Hyobanche is a root parasite with an unique system of secondary haustoria formed on the leaf bracts of the rhizomes, which can be quite an extensive system underground. Proximity to other plants is not a good indicator of the actual host plant being parasitized. To determine the host range for species of Hyobanche ca. 400 host roots attached to haustoria were collected and their DNA extracted. Accessions with amplifiable DNA were sequenced and matched to sequences deposited into Genbank or to sequences obtained from potential host plants collected in proximity to parasitic plants collected in the field. Hyobanche parasitizes a wide range of plant genera from Asteraceae, Goodeniaceae, Poaceae, and Thymelaeaceae, and multiple plant genera may be parasitized at the same time.

Broader Impacts:


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1 - Ohio State University, Department of Evolution, Ecology, and Organismal Biology, 318 W. 12th Avenue, Columbus, OH, 43210-1293, USA

Keywords:
Orobanchaceae
parasitic plant
Hyobanche
host plant
DNA forensics
ecology.

Presentation Type: Oral Paper:Papers for Sections
Session: 36
Location: Lindell B/Chase Park Plaza
Date: Tuesday, July 12th, 2011
Time: 4:30 PM
Number: 36013
Abstract ID:130


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