| Photorhabdus temperata |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacteriales, Family Morganellaceae, Genus Photorhabdus,
Photorhabdus temperata Fischer-Le Saux et al. 1999.
Photorhabdus temperata Fischer-Le Saux et al. 1999.
Gram-negative rods, 2-3 x 0.5-2.0 x 1.4-6.0 µm. Motile by peritrichous flagella.
Maximum temperature for growth in nutrient broth is 33-35 ºC. Yellow or brown
pigment is produced. Occurs as two phase variants. Highly luminous. Annular
hemolysis often occurs on sheep and horse blood agars.
pigment is produced. Occurs as two phase variants. Highly luminous. Annular
hemolysis often occurs on sheep and horse blood agars.
The natural habitat is in the intestinal lumen of entomopathogenic nematodes of Heterorhabditis megidis, of group NC of H.
bacteriophora, and of H. zealandica.
bacteriophora, and of H. zealandica.
Symbiotic bacteria of entomopathogenic nematodes or in the infected insects.
- Marion Fischer-Le Saux, Veronique Viallard, Brigitte Brunel, Phillippe Normand, and Noel E. Boemare. Polyphasic classification of
the genus Photorhabdus and proposal of new taxa: P. luminescens subsp. luminescens subsp. nov., P. luminescens subsp.
akhurstii subsp. nov., P. luminescens subsp. laumondii subsp. nov., P. temperata sp. nov., P. temperata subsp. temperata subsp.
nov. and P. asymbiotica sp. nov. IJSEM October 1999 49:1645-1656. - 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. - 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, gelatin hydrolysis, lipase (Tween 20 and 80), lecithinase (egg yolk agar), acid production from: fructose,
glucose (without gas production), N-acetylglucosamine, maltose (weakly), mannose, and ribose.
Negative results for arginine dihydrolase, DNase, growth in KCN, H2S production, lysine decarboxylase, methyl red, nitrate reduction,
ornithine decarboxylase, oxidase, ONPG, Voges-Proskauer, acid production from D-adonitol, L-arabinose, cellobiose, dulcitol,
lactose, melibiose, alpha-methyl-D-glucoside, raffinose, L-rhamnose, salicin, D-sorbitol, sucrose, and D-xylose.
Variable results for citrate utilization, esculin hydrolysis, indole production, phenylalanine deaminase, tryptophan deaminase, urease,
acid production from glycerol (weakly), myo-inositol (weakly), mannitol, and trehalose.
glucose (without gas production), N-acetylglucosamine, maltose (weakly), mannose, and ribose.
Negative results for arginine dihydrolase, DNase, growth in KCN, H2S production, lysine decarboxylase, methyl red, nitrate reduction,
ornithine decarboxylase, oxidase, ONPG, Voges-Proskauer, acid production from D-adonitol, L-arabinose, cellobiose, dulcitol,
lactose, melibiose, alpha-methyl-D-glucoside, raffinose, L-rhamnose, salicin, D-sorbitol, sucrose, and D-xylose.
Variable results for citrate utilization, esculin hydrolysis, indole production, phenylalanine deaminase, tryptophan deaminase, urease,
acid production from glycerol (weakly), myo-inositol (weakly), mannitol, and trehalose.
(c) Costin Stoica
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