| Anaerorhabdus furcosa |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Erysipelotrichia, Order Erysipelothrichales, Family Erysipelotrichaceae, Genus Anaerorhabdus,
Anaerorhabdus furcosa Shah and Collins 1986.
Synonyms: Anaerorhabdus furcosus (Veillon and Zuber 1898) Shah and Collins 1986, Bacteroides furcosus (Veillon and Zuber 1898)
Hauduroy et al. 1937, Bacillus furcosus Veillon and Zuber 1898.
Anaerorhabdus furcosa Shah and Collins 1986.
Synonyms: Anaerorhabdus furcosus (Veillon and Zuber 1898) Shah and Collins 1986, Bacteroides furcosus (Veillon and Zuber 1898)
Hauduroy et al. 1937, Bacillus furcosus Veillon and Zuber 1898.
Gram-negative, short, pleomorphic rods, 0.3 to 1.5 x 1 to 3 µm, occuring singly, in
paris or short chains. Some cells appear to be forked or Y-shaped. Non-motile.
Non-sporeforming.
paris or short chains. Some cells appear to be forked or Y-shaped. Non-motile.
Non-sporeforming.
Colonies on blood agar are small, 0.5 mm diameter, circular, entire, low convex,
translucent, colourless to gray, smooth, and shiny. Glucose broth cultures are turbid
with smooth sediment; growth is stimulated by rumen fluid. The optimum temperature
for growth is 30-37 ºC; slight growth at 25 ºC but none at 45 ºC. Obligately anaerobic.
translucent, colourless to gray, smooth, and shiny. Glucose broth cultures are turbid
with smooth sediment; growth is stimulated by rumen fluid. The optimum temperature
for growth is 30-37 ºC; slight growth at 25 ºC but none at 45 ºC. Obligately anaerobic.
Isolated from clinical samples. Infrequently isolated from human and pig feces.
Isolated from infected appendix, lung abscesses and abdominal abscesses.
- Shah HN, Collins MD. Reclassification of Bacteroides furcosus Veillon and Zuber (Hauduroy, Ehringer, Urbain, Guillot and
Magrou) in a new genus Anaerorhabdus, as Anaerorhabdus furcosus comb. nov. Syst. Appl. Microbiol. 1986; 8:86-88.
Non-saccharolytic although a few carbohydrates may be fermented weakly. Acetic and lactic acids are the major metabolic end
products in peptone-yeast extract-glucose broth (PYG).
Positive results for glucose-6-phosphate dehydrogenase, esculin hydrolysis (most strains), phosphate.
Negative results for gelatin liquefaction (most strains), hippurate hydrolysis, H2S production, indole production, nitrate reduction,
starch hydrolysis, urease, 6-posphogluconate dehydrogenase, glutamate dehydrogenase, malate dehydrogenase, Voges-Proskauer
test.
products in peptone-yeast extract-glucose broth (PYG).
Positive results for glucose-6-phosphate dehydrogenase, esculin hydrolysis (most strains), phosphate.
Negative results for gelatin liquefaction (most strains), hippurate hydrolysis, H2S production, indole production, nitrate reduction,
starch hydrolysis, urease, 6-posphogluconate dehydrogenase, glutamate dehydrogenase, malate dehydrogenase, Voges-Proskauer
test.
(c) Costin Stoica
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