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Abstract Detail


Conservation Biology

Lang, Kylene R. [1], Schierenbeck, Kristina A. [1], Manos, Paul S. [2].

Microsatellite Data Indicate Gene Flow Among Platanus Species of the Northern Hemisphere.

Hybridization is a primary source of invasive genotypes and has been shown to contribute to the loss of diversity in a number of locally adapted species. Our focus is to quantify gene flow within the ancient genus Platanus between the native taxa, (P. orientalis, P. occidentalis, P. racemosa, P. wrightii) and the non-native P. x acerifolia. Platanus is wind-pollinated, and its species readily hybridize. The horticultural P. x acerifolia is widely planted for its tolerance to infection and other city stresses, and through hybridization events is endangering the genetic integrity of native Platanus populations in already compromised, shrinking riparian habitats. Sixteen of 28 tested microsatellite primer pairs amplified simple sequence repeat (SSR) loci for all taxa. Four of these loci showed species specific allelic diversity among species and were used to identify the gene flow between urban areas and surrounding native populations of P. racemosa. These data will serve as the basis for a larger scale sampling efforts to predict the long-term consequences of gene movement out of P. x acerifolia and into their native congeners at the regional and landscape level.


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1 - California State University Chico, Department of Biological Sciences, Chico, California, 95929-0515, USA
2 - Duke University, Department of Biology, 139 Biological Sciences Building, PO Box 90338, Durham, North Carolina, 27708, USA

Keywords:
hybridization
conservation
gene flow
Platanus
riparian
Simple Sequence Repeats (SSR) Genotyping.

Presentation Type: Poster:Posters for Topics
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P65014
Abstract ID:2260


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