Main symptoms

 

The rare berries infected with Aspergillus spp. are soft and dull. They take on a whitish color on the white grape varieties and rather brown on the reds (figures 1 to 6).

 

The sporulation brown to black of these fungi on berries is rather powdery to charcoal for species belonging to the Nigri section (Figures 7 and 8). The fruiting bodies of these fungi are also observed in the heart of botrytised clusters following their secondary development.

 

Only a few species in this section have been associated with alterations in grape berries: Aspergillus niger and Aspergillus carbonarius . Let us add that Aspergillus aculeatus has also been described in Canada as responsible for berry rot starting from various wounds.

Last change : 04/19/21
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Figure 1
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Figure 2
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Figure 3
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Figure 4
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Figure 5
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Figure 6
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Figure 7
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Figure 8