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Pierce's Disease
Research Updates

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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

EVALUATION OF SOME FUNGAL PATHOGENS FOR THE CONTROL OF THE GLASSY-WINGED SHARPSHOOTER

  • Author(s): Kaya, Harry; Dara, Surendra; McGuire, Michael;
  • Abstract: Several isolates of the hyphomycetous fungi, Beauveria bassiana (Balsamo) Vuillemin and Metarhizium anisopliae (Metschnikoff) Sorokin, were recovered from the glassy-winged sharpshooter (GWSS), Homalodisca coagulata (Say), habitats and other insect hosts in southern California. Some of these isolates were evaluated against GWSS along with other fungal pathogens isolated from GWSS in Texas, Mississippi and Florida. Growth of the selected isolates was also evaluated at 15, 23, 28 and 32(o)C. Two California isolates and a Texas isolate of B. bassiana were significantly more virulent to GWSS than other isolates. Although no natural fungal infections have been found in GWSS populations in California to date, we continue to search for them by periodical sampling in Kern, Riverside and Ventura counties.
  • Publication Date: Dec 2005
  • Journal: 2005 Pierce's Disease Research Symposium

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