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Fusarium dry rot of potato is a devastating post-harvest losses (vegetables) disease affecting both seed potatoes and potatoes for human consumption. [3] Dry rot causes the skin of the tuber to wrinkle. The rotted areas of the potato may be brown, grey, or black and the rot creates depressions in the surface of the tuber.
The type, color and distribution of the yellow spots on this leaf perfectly describe the symptoms of various potato viruses, hence collectively these are known as "aucuba leaf". Different viruses cause the same symptom on the leaves of affected potato plants, which is called "aucuba leaf".
Potato yellow dwarf virus: genus Nucleorhabdovirus, Potato yellow dwarf virus (PYDV) Potato yellow mosaic virus: genus Geminiviridae, Potato yellow mosaic virus (PYMV); subgroup III Potato yellow vein virus: Potato yellow vein virus (PYVV) Potato yellowing virus: genus Alfamovirus, Potato yellowing virus (PYV) Potato virus A
Leaf margins become necrotic, turning brown and purplish and curl inwards towards the center of the leaf. Secondary infection, which starts from infected potato culls, produces more severe symptoms. Leaf rolling is more apparent and the entire leaf can become chlorotic and sometimes also has a purple discoloration. [ 4 ]
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The Potato yellow vein virus (PYVV) is a plant pathogen of the Closteroviridae family. It is a whitefly-transmitted closterovirus vectored by Trialeurodes vaporariorum, which is known to cause a yellowing disease in potato crops in South America. [1] PYVV RNA have a conserved 3'-terminal secondary structure, which includes a pseudoknot. [1]
There's a whole rainbow's worth of potatoes to enjoy.And whether you prefer red, yellow or even purple potatoes, you'll get a good amount of energizing carbohydrates, gut-healthy fiber and ...
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]