Phylum Firmicutes, Class Clostridia, Order Clostridiales, Family Clostridiaceae, Genus Clostridium, Cluster I (Clostridium sensu
stricto), Clostridium algidixylanolyticum Broda, Saul, Bell and Musgrave 2000.
Gram-negative, tapered rods, 0.5-0.8 x 1.8-2.8 µm, single cells, motile. Elliptical
spores do not swell maternal cells and are produced in the late stationary growth
Colonies are 0.8-2.5 mm in diameter, greyish-white, translucent and beta-hemolytic
on sheep-blood agar after 72 h at 26 ºC. Obligately anaerobic. Grows optimally at 2.5-
30 ºC (range 2.5-32.2 ºC), and pH 6.8-7.0 (range 4.7-9.1).
Isolated from vacuum-packed, temperature-abused raw lamb.
Supernatant of the broth culture was not toxic to mice.
- 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,
- Broda D.M., Saul D.J., Bell R.G. and Musgrave D.R., 2000. Clostridium algidixylanolyticum sp. nov., a psychrotolerant, xylan-
degrading, spore-forming bacterium. IJSEM 50, 623-631.
Products from PYGS (peptone, yeast extract, glucose, starch) broth are: acetate,
formate, lactate, ethanol, butyrate, butanol, hydrogen and carbon dioxide. Milk reaction
is negative. Meat and casein are not digested. Saccharoclastic.
Positive results for H2 production, H2S production, starch hydrolysis, xylan degradation, substrate utilization and/or acid production
from: arabinose, cellobiose, fructose, galactose, glucose, inulin, lactose, maltose, mannose, raffinose, rhamnose, salicin, sucrose &
Negative results for catalase, indole production, esculin hydrolysis, gelatin hydrolysis, lecithinase, lipase, nitrate reduction, oxidase,
urease, substrate utilization and/or acid production from: adonitol, dextran, esculin, inositol, mannitol, sorbitol, sorbose & trehalose.
(c) Costin Stoica