Location: Crop Diseases, Pests and Genetics Research
Title: Experimental infection of California ripe olive cultivars with Xylella fastidiosa subspecies pauca De Donno and acquisition by glassy-winged sharpshooterAuthor
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Submitted to: PhytoFrontiers
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 7/29/2024 Publication Date: N/A Citation: N/A Interpretive Summary: Xylella fastidiosa subsp. pauca (Xfp) infects olive trees and has caused significant damage to the olive industry in Europe. Although this pathogen has not been found in North America to date, the ripe olive industry in California may be vulnerable if this pathogen were introduced in the future. This study evaluated several risk factors for Xfp disease in the California olive industry including susceptibility of the important ripe olive cultivars and ability of the glassy-winged sharpshooter to act as a vector for this pathogen in olive. Olive cultivars Manzanillo, Sevillano, and Mission all showed disease symptoms after inoculation with Xfp. Glassy-winged sharpshooters were able to acquire Xfp from infected olive plants as soon as 30 days after plant inoculation. This information is valuable for risk assessment and disease management planning in the event of future introduction of Xfp to the United States. Technical Abstract: Xylella fastidiosa subsp. pauca (Xfp) infects olive trees and has caused significant damage to the olive industry in Europe. Although this pathogen has not been found in North America to date, the environment, plant hosts, and insect vectors in the United States olive-growing regions (mainly California) are likely to be conducive to Xfp spread and disease damage. This study evaluated several risk factors for Xfp disease in the California olive industry including susceptibility of the dominant cultivars, and acquisition by a common insect vector, the glassy-winged sharpshooter. Olive cultivars Manzanillo, Sevillano, and Mission all exhibited disease symptoms after inoculation with Xfp. Glassy-winged sharpshooters were able to acquire Xfp from infected olive plants as soon as 30 days after plant inoculation. This information is valuable for risk assessment and disease management planning in the event of future introduction of Xfp to the United States. |
