| Photobacterium angustum |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Vibrionales, Family Vibrionaceae, Genus Photobacterium,
Photobacterium angustum Reichelt, Baumann and Baumann 1979.
Photobacterium angustum Reichelt, Baumann and Baumann 1979.
Gram-negative rods. Involution forms occur in old cultures and under adverse growth
conditions. Motile by means of unsheathed polar flagella .
conditions. Motile by means of unsheathed polar flagella .
Colonies are smooth, semitranslucent, convex, ivory. Grow on blood agar, BHI-agar,
TSA supplemented with 1% NaCl, thiosulfate citrate bile sucrose agar, and marine
agar. Is unable to grow in the absence of Na+; able to grow in nutrient broth with 1-6%
NaCl. Grow at 4-37 ºC (20-25 ºC optimum temperature). Facultative anaerobe,
chemoorganotrophic, not luminescent , no hemolysin production.
TSA supplemented with 1% NaCl, thiosulfate citrate bile sucrose agar, and marine
agar. Is unable to grow in the absence of Na+; able to grow in nutrient broth with 1-6%
NaCl. Grow at 4-37 ºC (20-25 ºC optimum temperature). Facultative anaerobe,
chemoorganotrophic, not luminescent , no hemolysin production.
Isolated from the open ocean and the light organs of several fish species. Susceptible to vibriostatic agent O/129. Resistant to
penicillin-G, oxacillin, streptomycin & amoxicillin.
penicillin-G, oxacillin, streptomycin & amoxicillin.
Unknown (none).
- An Thyssen , Frans Ollevier, 2004. Genus II . Photobacterium Beijerinck 1889. In: Bergey’s Manual of Systematic Bacteriology,
Second edition,Vol two, part B, George M. Garrity (Editor-in-Chief), pp. 546-555. - J. G.Holt et al., 1994. Group 5 Facultatively anaerobic Gram-negative rods. Subgroup 2 Family Vibrionaceae. In: Begey’s Manual of
Determinative Bacteriology, 9-th edition, Williams & Wilkins. pp. 190-194, 256-257.
Positive results for methyl red, Voges-Proskauer, ONPG test, arginine dihydrolase, acid
production from: D-glucose, D-mannose & D-xylose.
Negative results for indole production, citrate utilization (Simmons), H2S production, urea hydrolysis, phenylalanine deaminase, lysine
decarboxylase, ornithine decarboxylase, esculin hydrolysis, nitrate reduction to nitrite, gas production from D-glucose, acid production
from: D-adonitol, L-arabinose, D-arabitol, cellobiose, dulcitol, D-galactose, myo-inositol, lactose, D-mannitol, melibiose, raffinose,
L-rhamnose, salicin & D-sorbitol.
Variable results for gelatin hydrolysis, oxidase, lipase, acid production from: maltose, sucrose & trehalose.
production from: D-glucose, D-mannose & D-xylose.
Negative results for indole production, citrate utilization (Simmons), H2S production, urea hydrolysis, phenylalanine deaminase, lysine
decarboxylase, ornithine decarboxylase, esculin hydrolysis, nitrate reduction to nitrite, gas production from D-glucose, acid production
from: D-adonitol, L-arabinose, D-arabitol, cellobiose, dulcitol, D-galactose, myo-inositol, lactose, D-mannitol, melibiose, raffinose,
L-rhamnose, salicin & D-sorbitol.
Variable results for gelatin hydrolysis, oxidase, lipase, acid production from: maltose, sucrose & trehalose.
(c) Costin Stoica
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