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

About Pierce's Disease

Pierce's Disease is a deadly disease of grapevines. It is caused by the bacterium Xylella fastidiosa, which is spread by xylem feeding leafhoppers known as sharpshooters. Pierce's Disease is known to be prevalent within the USA from Florida to California, and outside the USA in Central and South America. Xylella fastidiosa works by blocking the xylem, which conducts the water around the plant. Symptoms include chlorosis and scorching of leaves, and entire vines will die after 1-5 years. Pierce's Disease is less prevalent where winter temperatures are cold, such as more northern areas, high altitudes and inland areas.

Announcements

PD/GWSS Board and PD Advisory Task Force Meeting
javpedia.org dpfantasy.org sitesrip.org
Date: November 9, 2020
Time: 10:00 AM
Location: California Department of Food and Agriculture, 2800 Gateway Oaks Drive, Sacramento, CA 95833.


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