Q: Which parasite causes downy mildew in grape plants?


Read this paragraph and choose the correct option from the provided answers:

Plant Parasites Protist parasites of terrestrial plants include agents that destroy food crops. The oomycete Plasmopara viticola parasitizes grape plants, causing a disease called downy mildew (Figure 13.18a). Grape plants infected with P. viticola appear stunted and have discolored withered leaves. The spread of downy mildew caused the near collapse of the French wine industry in the nineteenth century.

 Choices:

- taphrina confusa

- epichloe typhina

- chrysomyxa ledi

- plasmopara viticola


A:
plasmopara viticola