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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

CORRELATION BETWEEN RESISTANCE TO PIERCES DISEASE AND XYLELLA STRAIN VIRULENCE USING PARTIALLY PURIFIED CULTURE FILTRATE

  • Author(s): Bloem, Kenneth; Lu, Jiang; Hopkins, Don; Paraiso, Oulimathe; Sheikh, Mehboob; Yun, Haenkun;
  • Abstract: Previous research at the FAMU Center for Viticulture suggested that cells of a virulent strain of Xylella fastidiosa (Xf) may produce toxic compounds that could be used to determine varietal susceptibility to Pierces disease (PD) in grapes. I n the experiments reported here, when grape leaves were challenged with partially purified culture filtrate of Xf with different levels of virulence, positive correlations between the degree of leaf necrosis and (1) the virulence of the Xf strain and (2) the level of PD resistance were observed.
  • Publication Date: Dec 2004
  • Journal: 2004 Pierce's Disease Research Symposium

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