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Downy mildew (Plasmopara cercidis) on Plasmopara cercidis


7 Images
5405299
Paul Bachi
University of Kentucky Research and Education Center

Angular tan to brown blocks of infected tissue mostly along the veins on the upper leaf surface caused by the fungus Plasmopara cercidis.  The eight or more larger brown spots that are less angular and surrounded by a yellow halo are infections of Pseudocercospora vitis the cause of Pseudocercospora leaf blight. 

5405300
Paul Bachi
University of Kentucky Research and Education Center

Angular white to brown blocks of infected tissue mostly along the veins on the lower leaf surface caused by the fungus Plasmopara cercidis.  The eight or more larger brown spots that are less angular and surrounded by a yellow halo are infections of Pseudocercospora vitis the cause of Pseudocercospora leaf blight.

5405301
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the lower surface of a leaf with angular areas of older and younger infections caused by the fungus Plasmopara cercidis.  White sporangiaphores and sporangia can be seen coming from the younger infected tissue.

5405302
Paul Bachi
University of Kentucky Research and Education Center

Close-up of the lower surface of a leaf with angular areas of younger infections caused by the fungus Plasmopara cercidis.  White sporangiaphores and sporangia can be seen coming from the younger infected tissue.

5405303
Paul Bachi
University of Kentucky Research and Education Center

Close-up of one angular area of younger infection caused by the fungus Plasmopara cercidis.  White sporangiaphores and sporangia can be seen coming from the infected tissue.

5405304
Paul Bachi
University of Kentucky Research and Education Center

Characteristic sporangiaphores and sporangia of the fungus Plasmopara cercidis.

5405305
Paul Bachi
University of Kentucky Research and Education Center

Characteristic sporangiaphores and sporangia of the fungus Plasmopara cercidis.