Genus Leminorella
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacteriales, Family Enterobacteriaceae, Genus Leminorella,
Leminorella grimontii - type species of the genus, Hickman-Brenner et al. 1985,
Leminorella richardii Hickman-Brenner et al. 1985.
Gram negative, straight rods. Non-motile at 36 ºC and 25 ºC.
Small, S-type, non-pigmented colonies. No special growth requirements. Facultatively
anaerobic, growth temperature 30 - 37 ºC. Grow on media: Nutrient agar or nutrient
broth; Trypticase Soy Agar ± 5% sheep blood; MacConkey agar, Mueller-Hinton agar.
Isolated from environmental (soil, water) and clinical specimens (urine & stools of humans & animals). Resistant to streptomycin,
penicillin, ampicillin, carbenicillin, & cephalothin.
Unknown clinical significance.  There is no evidence that strains cause diarrhea or intestinal infections.
Some strains may agglutinate with Salmonella antisera.
  1. J. G.Holt et al., 1994. Begey’s manual of Determinative Bacteriology, 9th-edition, Williams & Wilkins.
  2. 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.
  3. Hickman-Brenner F.W. et al.: Leminorella, a new genus of Enterobacteriaceae: identification of Leminorella grimontii sp. nov. and
    Leminorella richardii sp. nov. found in clinical specimens. J. Clin. Microbiol., 1985, 21,234-239.
Positive results for H2S production, tyrosine hydrolysis, nitrate reduction,
acid production from: L-arabinose,  D-glucose,  L-tartrate & D-xylose.

Negative results for indole production, Voges–Proskauer, urea hydrolysis, phenylalanine deaminase, lysine decarboxylase, arginine
dihydrolase, ornithine decarboxylase, growth in the presence of KCN, malonate utilization, esculin hydrolysis, gelatin hydrolysis,
lipase, DN-ase, acid production from: lactose, sucrose, D-mannitol, salicin, adonitol, myo-inositol, D-sorbitol, raffinose, L-rhamnose,
maltose, trehalose, cellobiose, alpha-methyl-dglucoside, erythritol, melibiose, D-arabitol, glycerol, D-mannose & D-galactose.

Leminorella richardii can be distinguished from L. grimontii by methyl red, dulcitol fermentation & citrate utilization negative tests.
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