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Streptomyces scabiei (also wrongly named Streptomyces scabies) [1] is a streptomycete bacterium species found in soils around the world. [2] Unlike most of the 500 or so Streptomyces species it is a plant pathogen causing corky lesions to form on tuber and root crops as well as decreasing the growth of seedlings.
Humans become infested by Sarcoptes scabiei var. hominis; [1] other mammals can be infested with different varieties of the mite. They include wild and domesticated dogs and cats (in which it is one cause of mange), ungulates, wild boars, bovids, wombats, [2] koalas, and great apes. [3] Human scabies mite seen under an optical microscope (x20)
S. s. var. suis In other cases, as with S. equi and S. anthracis , these are sometimes considered distinct species. The term Sarcoptes canis appears in older references, [ 1 ] but is now usually described as Sarcoptes scabiei var. canis [ 2 ] or Sarcoptes scabiei canis .
Scabies (/ ˈ s k eɪ b iː z, ˈ s k eɪ b i iː z /; [10] also sometimes known as the seven-year itch) [1] is a contagious human skin infestation by the tiny (0.2–0.45 mm) mite Sarcoptes scabiei, [1] [3] variety hominis. The word is from Latin: scabere, lit. 'to scratch'. [11] The most common symptoms are severe itchiness and a pimple-like ...
The genome sequence of S. scabiei, a member of the genus with the ability to cause potato scab disease, has been determined at the Wellcome Trust Sanger Institute. At 10.1 Mbp long and encoding 9,107 provisional genes, it is the largest known Streptomyces genome sequenced, probably due to the large pathogenicity island. [22] [23]
List of genes mutated in cutaneous conditions; List of genes mutated in pigmented cutaneous lesions; List of histologic stains that aid in diagnosis of cutaneous conditions; List of human leukocyte antigen alleles associated with cutaneous conditions; List of immunofluorescence findings for autoimmune bullous conditions
"Phylogenetic analysis of Streptomyces spp. isolated from potato scab lesions in Korea on the basis of 16S rRNA gene and 16S-23S rDNA internally transcribed spacer sequences". International Journal of Systematic and Evolutionary Microbiology. 54 (1): 203–209. doi: 10.1099/ijs.0.02624-0. ISSN 1466-5026. PMID 14742481.
[1] [2] From the egg hatches a larva, characterized by having three pairs of legs. The larva feeds on the host and molts to a nymph. The nymph is similar to the larva but has four pairs of legs. Then the nymph feeds and molts. This molt is either to the first of several more nymph stages, or to an adult.