Spirillum


Spirillum
A genus of large (1.4–1.7 μm in diameter), rigid, helical, Gram-negative bacteria (family Spirillaceae) that are motile by means of bipolar fascicles of flagella. These freshwater organisms are obligately microaerophilic and chemoorganotrophic, possessing a strictly respiratory metabolism; they neither oxidize nor ferment carbohydrates. The type species is S. volutans. [Mod. L. dim. of L. spira, coil, fr. G. speira]
- S. minus a species of uncertain taxonomic classification that causes a form of rat-bite fever (sodoku). This species has never been cultured.
- S. volutans a species found in fresh water; it is the type species of S..

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spi·ril·lum spī-'ril-əm n
1) cap a genus of gram-negative bacteria comprising elongated forms having tufts of flagella at both poles and usu. living in stagnant water rich in organic matter see RAT-BITE FEVER (b)
2) pl -ril·la -'ril-ə any bacterium of the genus Spirillum

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n.
a genus of highly motile rigid spiral-shaped bacteria usually found in fresh and salt water containing organic matter. They bear tufts of flagella at one or both ends of the cell. Most species are saprophytes, but S. minus causes rat-bite fever.

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Spi·ril·lum (spi-rilґəm) [L., dim. of spira coil] a genus of gram-negative bacteria of the family Spirillaceae, consisting of short, rigid, helical cells with bipolar flagella; organisms are motile, and microaerophilic or aerobic, with a respiratory metabolism, and are found in stagnant freshwater environments. The type species is S. voґlutans.

Medical dictionary. 2011.

Look at other dictionaries:

  • Spirillum — Spirillum …   Wikipédia en Français

  • Spirillum — Systematik Domäne: Bakterien (Bacteria) Stamm: Proteobacteria Klasse: Betaproteobacteria …   Deutsch Wikipedia

  • Spirillum — in microbiology refers to a bacterium with a cell body that twists like a spiral. It is the third distinct bacterial cell shape type besides coccus and bacillus cells. Spirillum is a genus of gram negative bacteria comprising elongated forms… …   Wikipedia

  • spirillum — [spī ril′əm] n. pl. spirilla [spī ril′ə] [ModL, dim. of L spira: see SPIRE1] 1. any of a genus (Spirillum) of bacteria having the form of a spiral thread and characterized by flagella 2. any of various similar microorganisms …   English World dictionary

  • Spirillum — Spi*ril lum, n. [NL., dim. of L. spira a coil.] (Biol.) A genus of common motile micro[ o]rganisms ({Spirobacteria}) having the form of spiral shaped filaments. One species is said to be the cause of relapsing fever. [1913 Webster] …   The Collaborative International Dictionary of English

  • Spirillum — См. Спириллы (Источник: «Словарь терминов микробиологии») …   Словарь микробиологии

  • Spirillum — (Spirorbis), bei Oken Gattung der eigentlichen Infusorien, von der Gestalt einer Schraube mit anderthalb Mündungen, 1/150 Linie groß, im Schlamm …   Pierer's Universal-Lexikon

  • Spirillum — Ehrenb. (Schraubenbakterie), Gattung der Bakterien (s. d.), kürzere oder längere, schraubig gewundene Stäbchen, an einem oder beiden Polen mit Büscheln von Geißeln, welche die Beweglichkeit der Zellen bedingen. S. undula Ehrenb. und S. volutans… …   Meyers Großes Konversations-Lexikon

  • Spirillum — Spirillum, Schraubenbakterie, Bakterienform, die zu korkzieher und schraubenförmigen Gebilden auswächst; dazu gehören außer den Spirillen im engern Sinne die Vibrionen, kurz, wenig gewunden, sehr beweglich, und Spirochäten, aus mehrern, zu… …   Kleines Konversations-Lexikon

  • spirillum — (pl. spirilla), 1875, Mod.L., dim. of L. spira (see SPIRAL (Cf. spiral)). So called for their structure …   Etymology dictionary

  • Spirillum — Spirillum …   Wikipédia en Français


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