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Warning: The following pest reports have not yet been confirmed with the appropriate National Plant Protection Organization. They are provided solely as an early warning to NAPPO countries, and all National and Regional Plant Protection Organizations should use this information with caution.

Subject: Citrus variegated chlorosis has potential to spread to North America
Publicada: November 15, 2001
Source: USDA-APHIS New Pest Advisory Group
Citrus variegated chlorosis (CVC) is a disease caused by the bacterium Xylella fastidiosa, which is responsible for several other conditions including Pierce's disease and almond leaf scorch. To date, CVC has only been found in Argentina and Brazil, but has the potential to be smuggled into North America via infected propagative material. Fruit is not considered to be a pathway. The pathogen is spread from tree to tree by xylem-feeding leafhoppers such as the glassy-winged sharpshooter (Homalodisca coagulata). These leafhoppers are known to survive and reproduce in natural vegetation surrounding citrus groves. In addition, native plant species such as box elder, dogwood, and buckeye have all been identified as alternative hosts of X. fastidiosa.

See http://www.cnr.berkeley.edu/xylella/oss.html for more information.

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