| Photorhabdus cinerea |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacteriales, Family Morganellaceae, Genus Photorhabdus,
Photorhabdus cinerea (Toth and Lakatos 2008) Machado et al. 2018.
Old synonym: Photorhabdus temperata subsp. cinerea Toth and Lakatos 2008.
Photorhabdus cinerea (Toth and Lakatos 2008) Machado et al. 2018.
Old synonym: Photorhabdus temperata subsp. cinerea Toth and Lakatos 2008.
Gram-negative, large rods, 4.8 (2-7) x 1.0 µm. Inclusion bodies are present.
Colonies on nutrient agar are salmon pink or light grey in colour and mucoid; there is
grey coloration in the growth medium around the colonies. Adsorbs dye on NBTA and
MacConkey plates. Maximum temperature for growth is 34-37 ºC.
Highly bioluminescent. Annular haemolysis is present on sheep blood agar.
grey coloration in the growth medium around the colonies. Adsorbs dye on NBTA and
MacConkey plates. Maximum temperature for growth is 34-37 ºC.
Highly bioluminescent. Annular haemolysis is present on sheep blood agar.
Isolated from the intestine of the entomopathogenic nematodes Heterorhabditis downesi and H. megidis, in Hungary.
Undetermined.
- 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. - Toth T, Lakatos T. Photorhabdus temperata subsp. cinerea subsp. nov., isolated from Heterorhabditis nematodes. Int J Syst Evol
Microbiol 2008; 58:2579-2581.
Positive results for DNase and gelatinase activity.
Can utilize L-fucose, L-histidine, myo-inositol, maltose, and xylitol.
Negative results for o-nitrophenyl beta-D-galactopyranoside hydrolysis, indole production, Voges-Proskauer test.
No utilization of D-mannitol.
Variable results for Simmons’ citrate, tryptophan deaminase, urea hydrolysis and DL-Lactate utilization.
Species can be differentiated from P. temperata by myo-inositol, maltose and xylitol utilization.
Can utilize L-fucose, L-histidine, myo-inositol, maltose, and xylitol.
Negative results for o-nitrophenyl beta-D-galactopyranoside hydrolysis, indole production, Voges-Proskauer test.
No utilization of D-mannitol.
Variable results for Simmons’ citrate, tryptophan deaminase, urea hydrolysis and DL-Lactate utilization.
Species can be differentiated from P. temperata by myo-inositol, maltose and xylitol utilization.
(c) Costin Stoica
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