Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacteriales, Family Morganellaceae, Genus Xenorhabdus,
Xenorhabdus budapestensis Lengyel et al. 2005.
Species description is based on a single isolate.
Gram-negative rods, 3.3-3.7 x 0.84-0.98 µm.
Colonies on nutrient agar are circular, convex, undulate, granular, and cream colored,
1.0-1.5 mm in diameter; on NBTA colonies are blue. Maximum growth temperature:
35 ºC in NB and 39 ºC in TSB.
Isolated from Steinernema bicornutum, Szabadka, Vojvodina, Serbia.
- Lengyel K, Lang E, Fodor A, Szallas E, Schumann P, Stackebrandt E. Description of four novel species of Xenorhabdus, family
Enterobacteriaceae: Xenorhabdus budapestensis sp. nov., Xenorhabdus ehlersii sp. nov., Xenorhabdus innexi sp. nov., and
Xenorhabdus szentirmaii sp. nov. Syst Appl Microbiol 2005; 28:115-122.
- Tailliez P, Pages S, Ginibre N, Boemare N. New insight into diversity in the genus Xenorhabdus, including the description of ten
novel species. Int J Syst Evol Microbiol 2006; 56:2805-2818.
Positive results for DNAse, gelatin hydrolysis and Tween 40, 60 and 80 hydrolysis, acid production from fructose, glucose, glycerol,
inositol, 5-ketogluconate, mannose and N-acetylglucosamine.
Can utilize (API 20 NE) glycerol, glucose, mannose and N-acetyl-glucosamine, fructose, and inositol.
Can utilize (Biolog GN) dextrin, alpha-D-glucose, D-trehalose, methyl-pyruvate, succinic acid, L-aspartic acid, L-asparagine, L-
glutamic acid, L-serine, glycerol, DL-alpha-glycerol phosphate, inosine and glucose-6-phosphate, Tween 80, N-acetyl-D-
glucosamine, D-fructose, D-mannose, p-hydroxy-phenyl acetic acid, D,L lactic acid, glycyl-L-aspartic acid, glycyl-L-glutamic acid, L-
histidine, L-proline, D-serine, uridine and thymidine. All the other Biolog GN tests are negative.
Negative results for citrate utilization, indole production, nitrate reduction starch hydrolysis, phenylalanine deaminase, phosphatase,
Tween 20 hydrolysis, acid production from esculin, gluconate, maltose, ribose, and trehalose. According to the API 50CH kit the
majority of fermentation tests were negative and they were therefore not shown in the original paper.
Variable results for esculin hydrolysis, lecithinase, assimilation of maltose, maltotriose and D-gluconate.
(c) Costin Stoica