Development of a Multiplex PCR for Identification of Vineyard Mealybugs Public Deposited

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  • A simple molecular tool was developed and tested to identify seven mealybug species found in North American vineyards: Pseudococcus maritimus Ehrhorn, Pseudococcus viburni (Signoret), Pseudococcus longispinus (Targioni-Tozzeti), Pseudococcus calceolariae (Maskell), Planococcus fleas (Signoret), Planococcus citri (Risso), and Ferrisia gilli Gullan. The developed multiplex PCR is based on the mitochondrial cytochrome c oxidase subunit one gene. In tests, this single-step multiplex PCR correctly identified 95 of 95 mealybug samples, representing all seven species and collected from diverse geographic regions. To test the sensitivity, single specimen samples with different Pl. ficus developmental stages (egg to adult female and adult male) were processed PCR and the resulting output provided consistent positive identification. To test the utility of this protocol for adult males caught in sex baited pheromone traps, Pl. ficus adult males were placed in pheromone traps, aged at a constant temperature of 26 +/- 2 degrees C, and processed with the multiplex each day thereafter for 8 d. Results showed consistent positive identification for up to 6 d (range, 6-8 d). Results are discussed with respect to the usefulness of this molecular tool for the identification of mealybugs in pest management programs and biosecurity of invasive mealybugs.
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  • Daane, K., Middleton, M., Sforza, R., Cooper, M., Walton, V., Walsh, D., . . . . (2011). Development of a multiplex PCR for identification of vineyard mealybugs. Environmental Entomology, 40(6), 1595-1603. doi: 10.1603/EN11075
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  • 40
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  • 6
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  • This research was funded by the United States Department of Agriculture NIFA-SCRI (award no. 2009-51181-06027, which included Daane, Almeida, Cooper, Walton, and Walsh), with additional support from the American Vineyard Foundation,CATable Grape Commission, and California Raisin Advisory Board (awards to Daane, Cooper, and Almeida), Oregon Wine Board, USDA Northwest Center for Small Fruits Research (award to Walton), and FONDECYT-Chile (Project 1080464, award to Zaviezo).
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