First report of oospore formation in Plasmopara viticola, the causal agent of grapevine downy mildew, in highland regions of southern Brazil von Bitencourt, Camila, Pierre, Patricia M. O., Pinto, Felipe A. M. F., Fermino‐Junior, Paulo C. P., Gomes, Beatriz R., Morais, Andriele C., Dias, Jhennifer M., Welter, Leocir J.

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