Cross Index Brucella
SuperSet Prokaryote, Eubacteria Gram-Negative Aerobic/ Microaerophilic Rods and Cocci,
Compare Acetobacter, Acidiphilium, Acidomonas methanolica, Acidothermus cellulolyticus, Acidovorax, Acinetobacter, Afipia, Agrobacterium, Agromonas oligotrophica, Alcaligenes, Alteromonas, Aminobacter, Aquaspirillum, Azomonas, Azorhizobium caulinodans, Azotobacter, Bacteroides, Beijerinckia, Bordetella, Bradyrhizobium japonicum, Brucella, Chromohalobacter marismortui, Chryseomonas luteola, Comamonas, Cupriavidus necator, Deleya, Derxia gummosa, Ensifer adherans, Erythrobacter longus, Flavobacterium, Flavomonas oryzihabitans, Francisella, Frateuria aurantica, Gluconobacter, Halomonas, Hydrogenophaga, Janthinobacterium lividum, Kingella, Lampropedia hyalina, Legionella, Marinobacter hydrocarbonoclasticus, Marinomonas, Mesophilobacter marinus, Methylobacillus glycogenes, Methylobacterium, Methylococcus, Methylomonas, Methylophaga, Methylophilus, Methylovorus glucosotrophus, Moraxella, Morococcus cerebrosus, Neisseriaceae, Neisseria, Oceanospirillum, Ochrobactrum anthropi, Oligella, Paracoccus, Phenylobacterium immobile, Phyllobacterium, Pseudomonas, Psychrobacter immobilis, Rhizobacter daucus, Rhizobium, Rhizomonas suberifaciens, Rochalimaea, Roseobacter, Rugomonas rubra, Serpens, Sinorhizobium, Sphingobacterium, Taylorella equigenitalis, Thermoleophilum, Thermomicrobium, Thermus, Variovorax paradoxus, Volcaniella eurhalina, Weeksella, Wolinella, Xanthobacter, Xanthomonas, Xyella fastidiosa, Xylophilus ampelinus, Zoogloea ramigera
Contrast Archaea
Subset  

 

Morphology Brucella
CELLULAR  
Staining Gram-negative Do not usually show true bioplar staining
Morphology Cocci, coccobacilli or short rods, 0.5-0.7 um in diameter and 0.6-1.5 um in length. Arranged singly and, less frequently, in pairs, short chains or small groups.
Motility Nonmotile; do not produce flagella.
Specialized structures True capsules are not produced.. Resting stages are not known..
Division  
COLONIAL  
Solid surface Colonies on serum- dextrose agar or other clear medium are transparent, raised, convex, with an entire edge and a smooth, shiny surface. They appear a pale honey colour by transmitted light. Nonsmooth variants of the smooth species occur but there are also stable nonsmooth species with a distinctive host range
Liquid  

 

Growth Parameters Brucella
PHYSIOLOGICAL  
Tropism . Chemoorganotrophic..
Oxygen Aerobic, possessing a respiratory type of metabolism and having a cytochrome-based electron transport system with oxygen or nitrate as the terminal electron acceptor
pH Optimum pH, 6.6-7.4
Temperature .. Optimum 37'C. Growth occurs between 20 and 40'C
Requirements Many strains require supplementary CO2 for growth, especially on primary isolation

Most strains require complex media containing several amino acids, thiamin, nicotinamide and magnesium ions; some strains may be induced to grow on minimal media containing an ammonium salt as the sole nitrogen source. Growth is improved by serum or blood, but hemin (X-factor) and nicotinamide adenine dinucleotide (NAD: V-factor) are not essential.
Products Acid production does not occur from carbohydrates in conventional media, except for B. neotomae. Do not produce indole. Do not liquefy gelatin or inspissated serum.

Do not lyse erythrocytes. Do not produce acetyl methyl carbinol (Voges-Proskauer test). The methyl red test is negative.
Enzymes Nitrate reductase is produced.. Catalase-positive. Usually oxidase-positive,
Unique features Possess characteristic intracellular antigens specific for the genus.,
ENVIRONMENTAL  
Habitat transmissible to a wide range of animal species including man
Lifestyle Intracellular parasites
Pathogenicity  
Distribution  

 

Genome Brucella
G+C Mol % 55-58
   

 

Reference Brucella
First citation Meyer, K.F. and E.B. Shaw (1920) A comparison of the morphological, cultural and biochemical characteristics of B. abortus and B. melitensis. Studies on genus Brucella nov. gen. J. Infect Dis. 27-173-184
The Prokaryotes p
Bergey's Systematatic p 377 M. J. Corbel and W. J. Brinely-Morgan
Bergey's Determinative p 79
References