Phylum Proteobacteria, Class Gammaproteobacteria, Order Vibrionales, Family Vibrionaceae, Genus Photobacterium,
Photobacterium profundum Nogi, Masui and Kato 1998.
Gram-negative rods, 0.8-1.0 x 2-4 μm. Motile by means of single, unsheathed polar
Colonies are smooth, semitranslucent, ivory, 0.7-1.0 mm in diameter after 48 hours of
incubation at 10 ºC. Grows on blood agar, BHI-agar, TSA supplemented with 1%
NaCl, TCBS (thiosulfate citrate bile sucrose agar) and marine agar; unable to grow in
the absence of Na+. Grow in nutrient broth with 3% NaCl. No growth at 20 ºC (grow
between 4-18 ºC at atmospheric pressure; optimum growth between 8-12 ºC).
Facultative anaerobe, chemoorganotrophic, not luminescent. Moderate barophilic and
psychrophilic. Growth occurs at pressures between 0.1 MPa-70 MPa (10 MPa
Isolated from the ocean sediment at a depth of 5110 m. Resistant to vibriostatic agent O/129.
- 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.
- Yuichi Nogi, Noriaki Masui and C. Kato. Photobacterium profundum sp. nov., a new, moderately barophilic bacterial species
isolated from a deep-sea sediment. Extremophiles Volume 2, Number 1, 1-8.
Positive results for indole production, methyl red, Voges-Proskauer reaction, arginine dihydrolase, nitrate reduction to nitrite, oxidase
& acid production from D-glucose.
Negative results for H2S production, lysine decarboxylase, ornithine decarboxylase & gas production from D-glucose fermentation.
(c) Costin Stoica