Symptoms on other parts of the vine

Infection on shoots appears as shiny brown patches which spread to leaf stalks causing necrosis and leaf fall. After suitable warm humid nights sporulation will occur to coveraffected parts with white down. Affected young shoots may thicken and distort.
 'Shepherd's Crook’ infected shoot tips
Inflorescences and berries will show similar infection to shoots with the development of brown patches which sporulate Resulting in a covering of white down. Small berries will wither and turn brown or even purple before shriveling and dropping.
Downy mildew on mature cluster