Cross Index	Neisseria
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, Flavimonas oryzihabitans, Flavobacterium, 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

Neisseria

CELLULAR

Staining	. Gram-negative, but there is a tendency to resist Gram decolorization.
Morphology	Cocci 0.6-1.0 um in diameter, occurring singly but more often in paris with adjacent sides flattened; one species (N. elongata) is an exception and consists of short rods 0.5 um wide, often arranged as diplobacilli or in short chains. Division of the coccal species is in two planes at right angles to each other, sometimes resulting in tetrads..
Motility	Swimming motility does not occur and flagella are absent
Specialized structures	nonsporing Capsules and fimbriae (pili) may be present

Division

COLONIAL

Solid surface

Some species produce a greenish yellow carotenoid pigment.

Liquid

 

Growth Parameters

Neisseria

PHYSIOLOGICAL

Tropism	Chemoorganotrophic. Some species are saccharolytic
Oxygen	Aerobic
pH
Temperature	Optimum 35-37`C
Requirements	Some species are nutritionally fastidious and hemolytic
Products
Enzymes	Oxidase-positive. Catalase-positive except N. elongata. Carbonic anhydrase is produced by all species except the "false neisseriae" N. caviae, N. ovis, and N cuniculi.
Unique features	... All species reduce nitrite except N. gonorrhoeae, N.canis, and the "false neisseriae" N. cuniculi and N. ovis.

ENVIRONMENTAL

Habitat	Inhabitants of the mucous membranes of mammals
Lifestyle
Pathogenicity	Some species are primary pathogens for man

Distribution

 

Genome

Neisseria

G+C Mol %

46.5 53.5

 

Reference

Neisseria

First citation	Trevisan,V. (1885)Caratteri di alcuni nuovi generi di Batteriacee. Atti. Accad. Fis-Med-Stat. Milano (Ser 4) 3:92-107
The Prokaryotes	p
Bergey's Systematatic	p 290 N. A. Vedros
Bergey's Determinative	p 91

References