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Pierce's Disease
Research Updates

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What is Pierce's Disease?

Pierce's Disease is a bacterial infection, which is spread by bugs that feed on grapevines, particularly the "glassy winged sharpshooter." Grapevines that become infected with PD can quickly become sick and die.

glassy-winged sharpshooter

CHARACTERIZATION AND STUDIES ON THE FUNDAMENTAL MECHANISMS OF XYLELLA FASTIDIOSA TRANSMISSION TO GRAPEVINES BY THE GLASSY-WINGED SHARPSHOOTER

  • Author(s): Purcell, Alexander; Almeida, Rodrigo; Backus, Elaine; Hashim, Jennifer; Hill, Barry;
  • Abstract: The transmission of Xf to dormant grape by the glassy-winged sharpshooter (GWSS) was confirmed for a second year in outdoor cage trials in Bakersfield in January 2003, but at lower rates than in February 2002. Attempts to transmit Xf with GWSS from dormant grape and almond did not result in transmission. Sharpshooters fed on suspensions of Xf in xylem sap acquired Xf as determined by culture assays, but all failed to transmit Xf from suspensions to grape, suggesting that vector transmission requires a plant factor or environmental conditions not present in cultured cells.
  • Publication Date: Aug 2003
  • Journal: 2003 Pierce's Disease Research Symposium

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