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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]
Phytophthora infestans is an oomycete or water mold, a fungus-like microorganism that causes the serious potato and tomato disease known as late blight or potato blight. Early blight , caused by Alternaria solani , is also often called "potato blight".
Blight is a rapid and complete chlorosis, browning, then death of plant tissues such as leaves, branches, twigs, or floral organs. [1] Accordingly, many diseases that primarily exhibit this symptom are called blights.
There are no perfect remedies for blight or keeping deer away from plants, but there are options, as this week's garden column explains.
Alternaria leaf spot or Alternaria leaf blight are a group of fungal diseases in plants, that have a variety of hosts. [ 1 ] [ 2 ] [ 3 ] The diseases infects common garden plants, such as cabbage, and are caused by several closely related species of fungi. [ 4 ]
Alternaria is a genus of Deuteromycetes fungi. All species are known as major plant pathogens.They are also common allergens in humans, growing indoors and causing hay fever or hypersensitivity reactions that sometimes lead to asthma.
Late blight (oomycete) Phytophthora infestans [2] Leak : Pythium spp. Pythium ultimum var. ultimum = Pythium debaryanum Pythium aphanidermatum Pythium deliense. Pink rot : Phytophthora spp. Phytophthora cryptogea Phytophthora drechsleri Phytophthora erythroseptica Phytophthora megasperma Phytophthora nicotianae var. parasitica
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