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Phylum Firmicutes, Class Clostridia, Order Clostridiales, Family Lachnospiraceae, Genus Cellulosilyticum, Cellulosilyticum
lentocellum (
Murray, Hofmann, Campbell and Madden 1987) Cai and Dong 2010.

Basonym:
Clostridium lentocellum  Murray, Hofmann, Campbell and Madden 1987. Cluster XIVb (Clostridium non-sensu stricto).
Gram-negative, slightly curved  rods, 0.3-0.5 x 2.5-4.0 µm, occurring singly. Motile by
fimbriae located at the cell's end. Spores are spherical, terminal.
Colonies are flat, colorless, transparent, have undulate margins, and measure 7–10
mm in diameter. Cellulolytic. Strict anaerobe. Bile inhibits growth. Hemin, vitamin K,
and rumen fluid stimulate growth.
Optimum temperature for growth is 40 ºC. Grow at 15-46.5 ºC. Optimum pH 7.5-7.7;
range 5.7
-9.13.
Ferments cellulose to produce ethanol, acetic acid, hydrogen, and carbon dioxide.
Isolated from an estuarine mud bank of a river that was fed with paper-mill and domestic effluent.
Undetermined.
  1. 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.
  2. Cai S. and Dong X., 2010. Cellulosilyticum ruminicola gen. nov., sp. nov.,isolated from the rumen of yak, and reclassification of
    Clostridium lentocellum as Cellulosilyticum lentocellum comb. nov. IJSEM 60, 845-849.
Milk reaction is positive.

Positive results for H
2 production, urease (weak), Voges-Proskauer reaction, utilization of: arabinose, cellobiose, cellulose, esculin,
fructose, galactose, glucose, glycogen, lactose, maltose, salicin, starch, sucrose, trehalose & xylose.

Negative results for catalase, hydrolysis of gelatin, hydrolysis of hippurate, indole production, nitrate reduction, utilization of: adonitol,
amygdalin, dulcitol, erythritol, glycerol, inositol, inulin, mannitol, mannose, melezitose, melibiose, raffinose, rhamnose, ribose,
sorbitol & sorbose.
Cellulosilyticum (Clostridium) lentocellum
(c) Costin Stoica
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