Corynespora blight
Corynespora cassiicola (Berk. & M.A. Curtis) C.T. Wei

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    Symptoms (24)
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Image Descriptor Description
1574160 Sign Small black structures are conidia of the pathogen.
1574130 Research Plants on left were not treated with fungicide and foliage is almost completely necrotic.  Plants on the right were treated with fungicide. October 1997
1574129 Symptoms Foliar symptoms. October 1997
1574126 Symptoms Foliar symptoms. October 1997
1574127 Symptoms Foliar symptoms. October 1997
1574128 Symptoms Foliar symptoms. October 1997
1574124 Symptoms Foliar symptoms. October 1997
1574125 Symptoms Foliar symptoms. Blighting occurs if lesions coalesce. October 1997
1574122 Symptoms Foliar symptoms. October 1997
1574123 Symptoms Foliar symptoms. October 1997
1574121 Sign Micrograph of target spot lesion at 30X magnification.  Dark flecks are conidia of Corynespora cassiicola.
5480103 Symptoms
5453934 Symptoms
5453935 Symptoms
5453936 Symptoms
5453937 Symptoms
5453938 Symptoms
5449591 Symptoms
5435615 Symptoms black lesions with conidia
1563105 Sign Close up (ca.40x) of leaf spot showing long, black threadlike conidiophores.
1563107 Sign Close up (ca. 100x) of leaf spot showing long, black threadlike conidiophores.
1563108 Asexual Spore Close up (ca.200x) of leaf spot showing long, black threadlike conidiophores.
1563109 Asexual Spore Photomicrograph (ca. 400x) showing conitiophores and conidia)Close up (ca.40x) of leaf spot showing long, black threadlike conidiophores.
1563094 Symptoms Corynespora blight tends to be serious in late summer and fall in North Carolina.  
1563095 Symptoms Corynespora blight tends to be serious in late summer and fall in North Carolina.  Notice angularity of spots. 
1563096 Symptoms Corynespora blight tends to be serious in late summer and fall in North Carolina.  Notice angularity of spots.
1563097 Symptoms Corynespora blight tends to be serious in late summer and fall in North Carolina.  Notice angularity of spots.  
1563098 Symptoms Corynespora blight tends to be serious in late summer and fall in North Carolina.  Close up of a spot.
1563100 Sign Corynespora blight tends to be serious in late summer and fall in North Carolina.  Photomicrograph (40x) of abaxial surface of leaf spot showhing black conidiophores.  Notice sand particles.  
1563102 Sign Corynespora blight tends to be serious in late summer and fall in North Carolina.   Photomicrograph at 100x showing abundant, pale gray, hairy conidiophores on abaxial surface of leaf spot.  
1563103 Sign Corynespora blight tends to be serious in late summer and fall in North Carolina.  Photomicrograph of abaxial surface of leaf spot showing abundant, black conidiophores.  Notice size of leaf hairs. 
1563104 Sign Corynespora blight tends to be serious in late summer and fall in North Carolina.  Close up of leaf spot on abaxial leaf surface.  
5390062 Asexual Spore conidiospores and hyphae
5372234 Sign
5372233 Sign
5372232 Sign
5372231 Sign
5372229 Symptoms
5372230 Symptoms
5372228 Symptoms
5372227 Sign

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