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Leuconostoc

Specimen image via iDigBio · CC0

EntityQ138793· pop 17· linked from 47 articles

Leuconostoc

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Leuconostoc is a genus of gram-positive bacteria, placed within the family of Leuconostocaceae, order Lactobacillales. They are generally ovoid cocci often forming chains. Leuconostoc spp. are intrinsically resistant to vancomycin and are catalase-negative (which distinguishes them from staphylococci). All species within this genus are heterofermentative and are able to produce dextran from sucrose. They are generally slime-forming. The name Leuconostoc comes from Greek adjective leukos meaning clear; and the word nostoc gelatinous colonies, Leuconostoc - colorless nostoc.

Species

FAMILY

  1. KingdomBacteria
  2. PhylumFirmicutes
  3. ClassBacilli
  4. OrderLactobacillales
  5. FamilyLactobacillaceae
Observations recorded93,806

Leuconostoc conformen un gènere de bacteris de l'àcid làctic Gram-positius dins la família Leuconostocaceae.[1] Les espècies de Leuconostoc tenen generalment forma de cocoides ovoide i sovint formen cadenes. Són resistents intrínsecament a la vancomicina i són catalasa-negatius (la qual cosa els distingeix dels Staphylococcus). Són heterofermentadors, capaços de produir dextrans a partir de la sacarosa. Tot i que inicialment es consideraven comensals no patògens en humans, des de la descripció el 1985 del primer cas de bacterièmia per Leuconostoc spp., algunes espècies són també capaços de produir infeccions als éssers humans.[2] Es consideren patògens oportunistes encara que en molt baixa freqüència, que es poden trobar en pacients críticament malalts, immunocompromesos i amb infeccions intra-hospitalàries. Generalment, s'associen a bacterièmia per dispositius intra-vasculars i l'ús de nutrició parenteral total. No obstant això, també s'han descrit altres infeccions associades, dins de les que es compten meningitis, osteomielitis, infecció del torrent sanguini, de vies urinàries i peritonitis.[3] Atès que aquestes malalties són rares, els jocs d'identificació comercials estàndard

via GBIF

Museum specimens

Specimen records
8
With media
7
Family
Lactobacillaceae
Collections
US, F, NHMUK, MNHN, NEB
Recorded in
Czechia, Germany, Czechoslovakia, France, United States, Etats-Unis
iDigBio →

Research

4,285 papers

via PubMed

~3 min read

Encyclopedic overview

5 sections
Contents
  • Species
  • ''Leuconostoc citrovorum''
  • Phylogeny
  • References
  • External links

Leuconostoc is a genus of gram-positive bacteria, placed within the family of Leuconostocaceae, order Lactobacillales. They are generally ovoid cocci often forming chains. Leuconostoc spp. are intrinsically resistant to vancomycin and are catalase-negative (which distinguishes them from staphylococci). All species within this genus are heterofermentative and are able to produce dextran from sucrose. They are generally slime-forming. The name Leuconostoc comes from Greek adjective leukos meaning clear; and the word nostoc gelatinous colonies, Leuconostoc - colorless nostoc.

Blamed for causing the 'stink' when creating a sourdough starter, some species are also capable of causing human infection. Because they are an uncommon cause of disease in humans, standard commercial identification kits are often unable to identify the organism.

Excerpted from Wikipedia’s “Leuconostoc” article, available under the CC BY-SA 4.0 licence.

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