Colonies are small, grayish-yellow, translucent and raised, 2 mm in diameter after 24
hours at 37 ºC. No growth occurs at 22 ºC. No hemolysis is observed on horse or
human blood agar. Polysaccharide is produced (in large amounts) on solid or in
liquid medium containing 1% or 5% sucrose. Requires cystine
-cysteine for growth,
and some strains may require arginine.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Neisseriaceae, Genus Neisseria, Neisseria
polysaccharea
Riou and Guibourdenche 1987.

Old synonym: "
Neisseria polysacchareae" Riou et al. 1983.
Gram-negative cocci occuring singly or grouped in pairs or tetrads. Nonmotile. Not
capsulated. Endospores are not produced.
Isolated from the nasopharynx of infants and children.
Undetermined.
  1. Tone Tonjum, 2005. Order IV. Neisseriales ord. nov. In:  Bergey’s Manual of Systematic Bacteriology, Second edition, Vol two, part C
    The Alpha-, Beta-, Delta-, and Epsilonproteobacteria, George M. Garrity (Editor-in-Chief), pp 774-863.
  2. Magnus Unemo (Editor-in-Chief), 2013. Laboratory diagnosis of sexually transmitted infections, including human immunodeficiency
    virus, pp 44-45. World Health Organization, ISBN 978 92 4 150584 0.
  3. Daniel C. Stein, 2006. The Neisseria. In: The Prokaryotes Third Edition, Volume 5: Proteobacteria: Alpha and Beta Subclasses,
    Martin Dworkin (Editor-in-Chief), pp 602–647.
Oxidative respiratory metabolism.

Positive results for carbonic anhydrase, catalase, iodine test (polysaccharide synthesis from sucrose), nitrite reduction (with gas
production), oxidase, acid production from: glucose & maltose.

Negative results for beta-galactosidase (ONPG), DN-ase, gelatinase, gamma-glutamyl transferase, nitrate reduction, tributyrin
hydrolysis, acid production from: fructose, lactose & D-mannitol.

Variable results for acid production from sucrose.
Neisseria polysaccharea
(c) Costin Stoica
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