| Clostridium hiranonis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Clostridia, Order Clostridiales, Family Clostridiaceae, Genus Clostridium, Cluster XI (Clostridium non
sensu stricto), Clostridium hiranonis Kitahara, Takamine, Imamura and Benno 2001.
sensu stricto), Clostridium hiranonis Kitahara, Takamine, Imamura and Benno 2001.
Gram-positive, straight to slightly curved rods, 0.8 x 1.6-10.0 µm, occuring singly or in
pairs. Non-motile. Can produce spores.
pairs. Non-motile. Can produce spores.
Obligate anaerobe. Colonies on EG (Eggerth-Gagnon) blood agar are 1.0-2.0 mm in
diameter, disc-shaped, and gray to grayish-white. Optimum temperature for growth is
37 ºC. Can grow at 30 or 50 ºC. Optimum pH 7.5-8.0. Moderate amounts of acetic acid
and iso-valeric acid are produced as the end products in peptone-yeast-extract
medium supplemented with glucose.
diameter, disc-shaped, and gray to grayish-white. Optimum temperature for growth is
37 ºC. Can grow at 30 or 50 ºC. Optimum pH 7.5-8.0. Moderate amounts of acetic acid
and iso-valeric acid are produced as the end products in peptone-yeast-extract
medium supplemented with glucose.
Isolated from healthy human feces.
Undetermined.
- N.A. Logan and P. De Vos, 2009. Genus I. Clostridium Prazmowski 1880. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W.
Ludwig, F.A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes,
Springer, 738-828. - Kitahara M., Takamine F., Imamura T. and Benno Y., 2001. Clostridium hiranonis sp. nov., a human intestinal bacterium with bile
acid 7a-dehydroxylating activity. IJSEM 51, 39-44.
Positive for substrate utilization and/or acid production from: fructose, glucose,
mannose & sucrose.
Negative results for alkaline phosphatase, catalase, esculin hydrolysis, gelatin hydrolysis, H2S production, indole production, nitrate
reduction, starch hydrolysis, substrate utilization and/or acid production from: amygdalin, adonitol, arabinose, cellobiose, dulcitol,
erythritol, esculin, galactose, glycogen, glycerol, inositol, inulin, lactose, maltose, mannitol, melezitose, melibiose, raffinose,
rhamnose, ribose, salicin, sorbitol, sorbose, starch, trehalose & xylose.
mannose & sucrose.
Negative results for alkaline phosphatase, catalase, esculin hydrolysis, gelatin hydrolysis, H2S production, indole production, nitrate
reduction, starch hydrolysis, substrate utilization and/or acid production from: amygdalin, adonitol, arabinose, cellobiose, dulcitol,
erythritol, esculin, galactose, glycogen, glycerol, inositol, inulin, lactose, maltose, mannitol, melezitose, melibiose, raffinose,
rhamnose, ribose, salicin, sorbitol, sorbose, starch, trehalose & xylose.
(c) Costin Stoica
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