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Symptoms on Tomato Leaf. Photograph provided by Elizabeth Bush, Virginia Polytechnic Institute and State University. The tomato leaf mold fungus is a specific pathogen that only infects tomatoes, mainly in greenhouses. The symptoms of this disease commonly occurs on foliage, and it develops on both sides of the leaf on the adaxial and abaxial ...
Symptoms, beginning with fruit rot, may form within 24 hours. Chlamydospores are the pathogen's resting structure, which allows the disease to survive and overwinter in the soil. The chlamydospores germinate in soil or decaying debris. [3] Through these chlamydospores, the pathogen begins the disease cycle again.
Septoria lycopersici infects the tomato leaves via the stomata and also by direct penetration of epidermal cells. [3] Symptoms generally include circular or angular lesions most commonly found on the older, lower leaves of the plant. [1] The lesions are generally 2–5 mm in diameter and have a greyish center with brown margins.
Alternaria solani is a fungal pathogen that produces a disease in tomato and potato plants called early blight. The pathogen produces distinctive "bullseye" patterned leaf spots and can also cause stem lesions and fruit rot on tomato and tuber blight on potato. Despite the name "early", foliar symptoms usually occur on older leaves. [3]
Blossom end rot in tomatoes is often caused by a low concentration of calcium in the fruit. It can also occur in peppers and eggplant.
Symptoms in tomato vary based on the tomato variety and may be mild to severe. [31] Foliar symptoms include mild to severe mosaic, narrowing and discolouration. Classic symptoms are the brown and wrinkled (rugose) patches that form on infected fruits, though fruits may also be misshapen or turn yellow and are often unmarketable due to symptoms ...
Common Names of Diseases, The American Phytopathological Society; Tomato Diagnostic Key, The Cornell Plant Pathology Vegetable Disease Web Page; Tomato Diseases (Fact Sheets and Information Bulletins), The Cornell Plant Pathology Vegetable Disease Web Page; Gautam, P. 2008. Bacterial Speck Disease of Tomato: An Insight into Host-Bacteria ...
The tomato chlorosis virus (ToCV) is an RNA virus belonging to the genus crinivirus, a group of plant-infecting viruses in the family Closteroviridae. [ 1 ] Tomato chlorosis virus (ToCV) was originally discovered in the mid-1990s in greenhouse-grown tomato plants in north-central Florida, USA. [ 2 ]