Pierce's Disease
Research Updates


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

(1) Understand how Xylella fastidiosa moves, and the patterns of its movement in systemic and nonsystemic plant hosts using microscopy; (2) Determine the fate of Xylella fastidiosa in weeds, cover crops, and adjacent vegetation common to vineyards of California's San Joaquin Valley.

PIs: Alexander Purcell


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Funding Sources:

  • Funded by: CDFA - Pierce's Disease and Glassy-winged Sharpshooter Board
  • Budget: $79,068
  • Start date: July 01, 2002
  • Stop date: December 31, 2004
  • Status: APPROVED