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.

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

Upcoming PD/GWSS Board and Advisory Task Force Meeting - October 19, 2015
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Date: October 19, 2015
Time: 10:00AM
Location: California Department of Food and Agriculture, 2800 Gateway Oaks Drive, Sacramento, CA 95833. In conference room 267

To view the meeting agenda Click Here.


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The Fifth Xanthomonas Genomics Conference
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The Fifth Xanthomonas Genomics Conference will be held in Bogotá, Colombia on July 8-11, 2015.
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View Past Announcements

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