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Emergence of Single Point Mutation in PvCesA3, Conferring Resistance to CAA Fungicides, in Plasmopara viticola Populations in Japan

Y. Aoki, M. Hashimoto, and S. Suzuki

July 2013


As far as we know, there is no report of fungicide-resistant Plasmopara viticola in Japan. In the present study, we detected a single point mutation in the PvCesA3 of P. viticola sampled from a Japanese vineyard, which conferred resistance to mandipropamid. The emergence of the mandipropamid-resistant PvCesA3 allele may lead to the spread of mandipropamid-resistant P. viticola in vineyards all over Japan in the near future.


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