Trabulsiella

Abstract

Tra.bul.si.el ' la . M.L. fem. ending ‐ ella ; M.L. fem. n . Trabulsiella named to honor L.R. Trabulsi, a Brazilian bacteriologist who did many important studies on the enteric pathogens of the family Enterobacteriaceae . Proteobacteria / Gammaproteobacteria / Enterobacteriales / Enterobacteriaceae / Trabulsiella Rod‐shaped cells, conforming to the general definition of the family Enterobacteriaceae . Gram negative. Motile. Facultatively anaerobic. Catalase positive. Oxidase negative. Ferment, rather than oxidize, D ‐glucose and other carbohydrates and produce visible gas during fermentation. Reduce nitrate to nitrite. Positive for methyl red, citrate utilization ( Simmons ), H 2 S production ( TSI ), lysine decarboxylase, ornithine decarboxylase, motility at 36°C, growth in the presence of cyanide ( KCN test ), esculin hydrolysis, ONPG, tyrosine hydrolysis, and the fermentation of D ‐mannitol, salicin , d ‐ sorbitol , l ‐ arabinose , l ‐ rhamnose, maltose , d ‐ xylose, trehalose, cellobiose, esculin, mucate , d ‐ mannose, and D ‐galactose. Arginine dihydrolase is positive, but delayed . Negative for Voges–Proskauer, urea hydrolysis, phenylalanine deaminase, malonate utilization, gelatin hydrolysis (22°C), lipase (corn oil), DNase, and the fermentation of sucrose, dulcitol, adonitol, myo ‐inositol, raffinose, α‐methyl‐ D ‐glucoside, erythritol, melibiose, and D ‐arabitol. Biochemically similar to, and can be confused with, Salmonella in routine screening tests. Do not completely type in Salmonella O or H antisera, and are negative in the Salmonella ‐specific test : lysis by bacteriophage O1, MUCAP ( 4‐methylumbelliferyl caprylate ), and a commercial gene probe ( Gene‐Trak Systems ). Susceptible to colistin, nalidixic acid, gentamicin, streptomycin, kanamycin, tetracycline, chloramphenicol, and carbenicillin; resistant to penicillin, ampicillin, and cephalothin ; variable resistance to sulfadiazine and carbenicillin (disk diffusion method on Mueller–Hinton agar). The mol % G + C of the DNA is : not determined. Type species : Trabulsiella guamensis McWhorter, Haddock, Nocon, Steigerwalt, Brenner, Aleksic, Bockemühl and Farmer 1992, 327 (Effective publication: McWhorter, Haddock, Nocon, Steigerwalt, Brenner, Aleksic, Bockemühl and Farmer 1991, 1483.)