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Fungal diseases; Alternaria blotch Alternaria mali = A. alternata apple pathotype Alternaria rot ... Apple scar skin = apple dapple, apple sabi-ka, apple bumpy fruit
Apple scab is a common disease of plants in the rose family that is caused by the ascomycete fungus Venturia inaequalis. [1] While this disease affects several plant genera, including Sorbus, Cotoneaster, and Pyrus, it is most commonly associated with the infection of Malus trees, including species of flowering crabapple, as well as cultivated apple.
Penicillium expansum produces the mycotoxin patulin, a neurotoxin that can enter the food supply via apples and apple products such as juice and cider. [19] Considering the size of the apple product industry and the large number of people that may come into contact with infected fruits, control of P. expansum is vitally important. [20]
Root-knot nematode Meloidogyne species – symptoms of Meloidogyne infestation in roses is stunting, slow growth, pale green leaves and wilting in mild weather. [2] Rose chafer (order Coleoptera: family Scarabaeidae) Macrodactylus subspinosus – The rose chafer is common to North America, and emerges in late May to mid June. These beetles form ...
The Venturia inaequalis pathogen is a fungal organism that produces similar symptoms across a range of woody hosts. These include the common pear ( Pyrus spp. ), firethorn ( Pyracantha spp. ), mountain ash ( Sorbus spp. ), and most notably both commercial apples along with ornamental crabapples ( Malus spp. ). [ 8 ]
Haralson with its typical peel coloration from sooty blotch and flyspeck. Sooty blotch and flyspeck is a descriptive term for a condition of darkly pigmented blemishes and smudges caused by a number of different fungi affecting fruit including apples, pear, persimmon, banana, papaya, and several other cultivated tree and vine crops.
Bitter rot of apple is a fungal disease of apple fruit that is caused by several species in the Colletotrichum acutatum and Colletotrichum gloeosporioides species complexes. [1] It is identified by sunken circular lesions with conical intrusions into the apple flesh that appear V-shaped when the apple is cut in half through the center of the ...
Fruit rot caused by the brown rot pathogen Monilinia fructigena is a notorious ailment found in Malus domestica—the apple tree—with the fungus occasionally spreading from the infected fruit to the branches, causing cankering. With apple infections, a varying symptom can occur within the fruits, causing what is commonly known as “black ...