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ARS Home » Pacific West Area » Parlier, California » San Joaquin Valley Agricultural Sciences Center » Crop Diseases, Pests and Genetics Research » Research » Research Project #430664

Research Project: Identification and Durability of Novel Sources of Resistance to Pierce’s Disease in Table and Raisin Grape

Location: Crop Diseases, Pests and Genetics Research

Project Number: 2034-21220-007-06-A
Project Type: Cooperative Agreement

Start Date: Apr 1, 2017
End Date: Dec 31, 2018

Objective 1 is to screen Vitis germplasm, table, and raisin grape cultivars for susceptibility to two strains of Xylella fastidiosa. Objective 2 is to evaluate resistant material for resistance durability to a panel of Xylella fastidiosa isolates representing the diversity in the San Joaquin Valley, California. This work will be performed in part by a graduate student provided by the California State University, Fresno collaborator. Objective 3 will focus on disseminating research results to growers and industry through written and oral communication. This objective will be completed by the University of California Cooperative Extension collaborator.

Cultivars and species of Vitis will be maintained at the USDA, Agricultural Research Service (ARS) research station in Parlier, California and evaluated for disease resistance to Xylella using stem inoculations in the greenhouse. Plants will be inoculated with one of two isolates, and those found to be resistant will be tested further against multiple isolates.