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Pear scab, a pear fungal disease caused by Venturia pirina or Fusicladium pyrorum; Poinsettia scab, a spot anthracnose disease caused by Sphaceloma poinsettiae; Powdery scab, a disease of the skin of potatoes caused by the protozoa Spongospora subterranea; Sheep scab, a skin disease of sheep caused by the mite Psoroptes ovis
The mites burrow into the skin to live and deposit eggs. [3] The symptoms of scabies are due to an allergic reaction to the mites. [2] Often, only between 10 and 15 mites are involved in an infection. [2] Scabies most often spreads during a relatively long period of direct skin contact with an infected person (at least 10 minutes) such as that ...
A callus (pl.: calluses) is an area of thickened and sometimes hardened skin that forms as a response to repeated friction, pressure, or other irritation. Since repeated contact is required, calluses are most often found on the feet and hands, but they may occur anywhere on the skin. Some degree of callus, such as on the bottom of the foot, is ...
Fusarium ear blight (FEB) (also called Fusarium head blight, FHB, or scab), is a fungal disease of cereals, including wheat, barley, oats, rye and triticale. [1] FEB is caused by a range of Fusarium fungi, which infects the heads of the crop, reducing grain yield.
A potato infected by common scab. Streptomyces scabiei is a streptomycete bacteria which means it forms a mycelium made of hyphae, a growth form more usually associated with fungi. The hyphae of Streptomyces, are much smaller than those of fungi (0.5–2.0 μm) and form a heavily branched mycelium.
Common scab is a plant disease of root and tuber crops caused by a small number of Streptomyces species, specifically S. scabies, S. acidiscabies, S. turgidiscabies and others. Common scab mainly affects potato ( Solanum tuberosum ), but can also cause disease on radish ( Raphanus sativus ), parsnip ( Pastinaca sativa ), beet ( Beta vulgaris ...
One of the first symptoms observed are lesions or scabs on the leaves. As the disease progresses, necrosis and hyperplasia begin to affect the plant. The symptoms continue to spread from the leaves to the petioles and stem. [3] It is typical for a scab disease to cause "crustaceous lesions on fruit, tuber, leaf, or stem" and to affect the whole ...
Debridement is the medical removal of dead, damaged, or infected tissue to improve the healing potential of the remaining healthy tissue. [2] [3] Removal may be surgical, mechanical, chemical, autolytic (self-digestion), or by maggot therapy.