Main symptoms

 

Berries invaded by Cladosporium herbarum have a beigeish tint at first; then dark green to black due to the development of its strongly melanized mycelium (Figures 1 and 2).

An olive sporulation forms on the surface of the berries, consisting of abundant conidiophores carrying numerous conidia. This sporulation can cover more or less entirely the berries (figure 3 to 5) or be rather localized in the form of spore pads (figures 6 to 8).

Note that gray rot ( Botrytis cinerea ) can be found on the same clusters as those parasitized by Cladosporium herbarum (Figures 9 to 11).

Last change : 04/19/21
Cladosporium22
Figure 1
Cladosporium23
Figure 2
Cladosporium12
Figure 3
Cladosporium11
Figure 4
Cladosporium18
Figure 5
Cladosporium17
Figure 6
Cladosporium10
Figure 7
Cladosporium13
Figure 8
Cladosporium16
Figure 9
Cladosporium15
Figure 10
Cladosporium21
Figure 11