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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".
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]
The soil-borne fungal pathogen Agroathelia rolfsii is a basidiomycete that typically exists only as mycelium and sclerotia (anamorph: Sclerotium rolfsii, or asexual state). It causes the disease Southern Blight and typically overwinters as sclerotia. [8]
Berg A. 1926. Tomato Late Blight and its Relation to Late Blight of Potato. Bonn WG, Zwet TVD. Distribution and economic importance of fire blight. Fire blight: the disease and its causative agent, Erwinia amylovora.:37–53. Erskine JM. 1973. Characteristics of Erwinia amylovora bacteriophage and its possible role in the epidemiology of fire ...
Anthony Reardon is a horticulture agent with Kansas State University Research and Extension. Need help? Contact the Johnson County Extension gardening hotline at 913-715-7050 or email garden.help ...
A. a. f. sp. lycopersici (AAL) infects only certain cultivars of tomato plants and is often referred to as Alternaria stem canker of tomato. [3] AAL ' s main symptom is cankers in the stem. It resides in seeds and seedlings, and is often spread by spores as they become airborne and land on plants. It can also spread throughout other plants. [4]
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Common mosaic of tomato (internal browning of fruit) Tobacco mosaic virus (TMV) Curly top: Curtovirus: Potato virus Y Potato virus Y: Pseudo curly top Tomato pseudo-curly top virus: Tomato bushy stunt Tomato bushy stunt virus: Tomato etch Tobacco etch virus: Tomato fern leaf Cucumber mosaic virus: Tomato mosaic Tomato mosaic virus Tomato mottle