| Photorhabdus asymbiotica |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacteriales, Family Morganellaceae, Genus Photorhabdus,
Photorhabdus asymbiotica Fischer-Le Saux et al. 1999.
Photorhabdus asymbiotica Fischer-Le Saux et al. 1999.
Gram-negative rods, 2-3 x 0.5-1.0 µm. Motile by peritrichous flagella.
Maximum temperature for growth in nutrient broth is 37-38 ºC. Yellow or brown
pigment is produced. No phase I isolates have been detected and isolates do not
absorb dyes, sometimes produce antibiotics weakly. Annular hemolysis observed on
sheep-blood agar and on horse-blood agar. Bioluminescent.
pigment is produced. No phase I isolates have been detected and isolates do not
absorb dyes, sometimes produce antibiotics weakly. Annular hemolysis observed on
sheep-blood agar and on horse-blood agar. Bioluminescent.
Isolated from human wounds and blood in Australia.
Undetemined.
- R. J. Akhurst, N. E. Boemare, P. H. Janssen, M. M. Peel, D. A. Alfredson, and C. E. Beard. Taxonomy of Australian clinical isolates
of the genus Photorhabdus and proposal of Photorhabdus asymbiotica subsp. asymbiotica subsp. nov. and P. asymbiotica
subsp. australis subsp. nov. Int J Syst Evol Microbiol July 2004 54:1301-1310. - Don J. Brenner and J.J. Farmer III, 2001. Family I. Enterobacteriaceae. In: Bergey’s Manual of Systematic Bacteriology, Second
edition, Vol two, part B, George M. Garrity (Editor-in-Chief), pp 587-897. - Machado RAR, Wuthrich D, Kuhnert P, Arce CCM, Thonen L, Ruiz C, Zhang X, Robert CAM, Karimi J, Kamali S, et al. Whole-
genome-based revisit of Photorhabdus phylogeny: proposal for the elevation of most Photorhabdus subspecies to the species
level and description of one novel species Photorhabdus bodei sp. nov., and one novel subspecies Photorhabdus laumondii
subsp. clarkei subsp. nov. Int J Syst Evol Microbiol 2018; 68:2664-2681. - Adeolu M, Alnajar S, Naushad S, S Gupta R. Genome-based phylogeny and taxonomy of the 'Enterobacteriales': proposal for
Enterobacterales ord. nov. divided into the families Enterobacteriaceae, Erwiniaceae fam. nov., Pectobacteriaceae fam. nov.,
Yersiniaceae fam. nov., Hafniaceae fam. nov., Morganellaceae fam. nov., and Budviciaceae fam. nov. Int J Syst Evol Microbiol
2016; 66:5575-5599.
Positive results for catalase, citrate utilization (weakly), esculin hydrolysis, gelatin hydrolysis, lipase (Tween 20 and 80), urease, acid
production from: glucose (without gas production), glycerol (weakly), N-acetylglucosamine, maltose, mannose, ribose, and trehalose
(most strains).
Negative results for arginine dihydrolase, DNase, growth in KCN, H2S production, indole production, lysine decarboxylase, lecithinase
(egg yolk agar), methyl red, nitrate reduction, ornithine decarboxylase, oxidase, ONPG, phenylalanine deaminase, tryptophan
deaminase, Voges–Proskauer, acid production from D-adonitol, L-arabinose, cellobiose, dulcitol, fructose, lactose, mannitol,
melibiose, alpha-methyl-D-glucoside, raffinose, L-rhamnose, salicin, D-sorbitol, sucrose, and D-xylose.
Variable results for acid production from myo-inositol.
production from: glucose (without gas production), glycerol (weakly), N-acetylglucosamine, maltose, mannose, ribose, and trehalose
(most strains).
Negative results for arginine dihydrolase, DNase, growth in KCN, H2S production, indole production, lysine decarboxylase, lecithinase
(egg yolk agar), methyl red, nitrate reduction, ornithine decarboxylase, oxidase, ONPG, phenylalanine deaminase, tryptophan
deaminase, Voges–Proskauer, acid production from D-adonitol, L-arabinose, cellobiose, dulcitol, fructose, lactose, mannitol,
melibiose, alpha-methyl-D-glucoside, raffinose, L-rhamnose, salicin, D-sorbitol, sucrose, and D-xylose.
Variable results for acid production from myo-inositol.
(c) Costin Stoica
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