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

The contribution of the pectin-degrading enzyme polygalacturonase (PG) in transmission of Xylella fastidiosa to grape, and use of PG-inhibitor proteins for transgenic resistance to Pierce's disease.

PIs: John Labavitch; Elaine Backus; David Morgan


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Funding Sources:

  • Funded by: CDFA - Pierce's Disease and Glassy-winged Sharpshooter Board
  • Budget: $151,276
  • Start date: July 01, 2004
  • Stop date: June 30, 2007
  • Status: APPROVED