Tuesday, 28 October 2003
D0312

This presentation is part of : Display Presentations, Section Cc. Insect Vectors in Relation to Plant Disease

Insect vector implicated in genetic similarity of bacterium that causes Pierce's disease

Mary Melissa Gardner1, C. J. Chang2, and Tracie M. Jenkins1. (1) The University of Georgia, Entomology, Georgia Station, 1109 Experiment Street, Griffin, GA, (2) The University of Georgia, Plant Pathology, Georgia Station, 1109 Experiment Street, Griffin, GA

Amplified fragment length polymorphic (AFLP) markers were used to differentiate among host-specific Xylella fastidiosa strains collected across a large and varied geography. These molecular data were subjected to population genetic analyses in order to determine gene flow patterns, genetic partitioning, and gain insight into infection patterns that could be vector-dependent. After evaluating the phylogeny, genetic identity and genetic distance of the dataset it was determined that host-specific X. fastidiosa are genetically similar across geography and that this similarity is likely vector-dependent. The results also provide insight into asymptomatic hosts for vector acquisition of the bacterium.

Species 1: Homoptera Cicadellidae Homalodisca (sharpshooter)
Keywords: AFLP

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