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Pierce's Disease
Research Updates

piercesdisease.cdfa.ca.gov

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

ROLE OF ALFALFA IN THE EPIDEMIOLOGY OF XYLELLA FASTIDIOSA IN CALIFORNIA

  • Author(s): Almeida, Rodrigo; Daane, Kent; Groves, Russell;
  • Abstract: Alfalfa occurs widely throughout the Central Valley, often adjacent to grape and other plants susceptible to Xylella fastidiosa (Xf). A previous epidemic of Pierces disease in the Central Valley was associated with migration of infective insects from alfalfa fields to vineyards. We will determine the importance of alfalfa as a host of different strains of Xf and its role as a source of the pathogen for vector transmission. These studies provide basic information on these interactions, which would be incorporated in disease management strategies that include alfalfa as a host of Xf and sharpshooter vectors.
  • Publication Date: Nov 2006
  • Journal: 2006 Pierce's Disease Research Symposium

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