Esculin
Mannose
Melibiose
Raffinose
Rhamnose
Salicin
Sorbitol
Sucrose
subsp. coryniformis
d
+
d
d
d
d
d
+
subsp. torquens
-
d
-
-
-
-
-
d
Lactobacillus coryniformis
Legend: +  positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74% of strains
Differential characters of Lactobacillus coryniformis subspecies:
 
Alkaline
phosphatase
Beta-
galactosidase
Alpha-glucosidase
Cystine
arylamidase
Lactose
Maltose
2-ketogluconate
subsp.
coryniformis
+
+
d
+
-
d
-
subsp. torquens
-
d
-
-
+
+
+
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus [Group B lactobacilli
(facultatively heterofermentative), unique phylogenetic-group], two subspecies:
- Lactobacillus coryniformis subsp. coryniformis Abo-Elnaga and Kandler 1965,
- Lactobacillus coryniformis subsp. torquens Abo-Elnaga and Kandler 1965.
Gram-positive, short or coccoid rods (0.8-1.1 x 1.0-3.0 μm), frequently somewhat pear-
shaped occurring singly, in pairs, or in short chains.
Optimum growth temperature 30-37 ºC. Can grow at 15 ºC, but not at 45 ºC. Growth
factor requirements: pantothenic acid, niacin, riboflavin, biotin, and p-aminobenzoic
acid are essential for all or the majority of the strains tested.
Isolated from silage, cow dung, dairy barn air, and sewage.
Undetermined.
  1. Hammes W.P. and Hertel C., 2009. Genus I. Lactobacillus Beijerinck 1901. 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, 465-511.
  2. Rogosa M., 1974. Genus I. Lactobacillus Beijerinck 1901. In: (Eds.) Buchanan R.E. and Gibbons N.E., Bergey’s Manual of
    Determinative Bacteriology, Eighth Edition , The Williams & Wilkins Company, Baltimore, 576-593.
  3. Tohno M, Kitahara M, Irisawa T, Masuda T, Uegaki R, Ohkuma M and Tajima K, 2013. Description of Lactobacillus iwatensis sp.
    nov. isolated from orchardgrass (Dactylis glomerata L.) silage, and Lactobacillus backii sp. nov. Int J Syst Evol Microbiol 63, 3854-
    3860.
Facultatively heterofermentative.
L. coryniformis subsp. coryniformis: the lactic acid produced from glucose contains substantial amounts of the L-isomer (15-20% of
total lactic acid).
L. coryniformis subsp. torquens: exclusively D(−)-lactic acid is produced.

Positive results for fermentation of: fructose, galactose, glucose (without gas production), gluconate (with gas production), maltose
and mannitol.

Negative results for esterase C4, esterase lipase C8, beta-glucosidase, N-acetyl-beta-glucosaminidase, fermentation of: D-adonitol,
amygdalin, arabinose, arabitol, arbutin, cellobiose, erythritol, inositol, melezitose, ribose, trehalose, xylitol and xylose.

Variable results for aesculin hydrolysis.
(c) Costin Stoica
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