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02-0667 1b.jpg
Lesions of Weissella confusa in the mona monkey (hematoxylin and eosin stain): A) liver: portal triads with neutrophilic infiltration (x10); A1, presence of bacterial emboli inside the vein (arrow) (x40). B) acute pneumonia: edema, congestion, and leukocyte cells exudation in the pulmonary alveoli (x10). C) encephalitis: congestion and marginalized neutrophils in nervous vessels (x10)
Scientific classification
Kingdom: Bacteria
Division: Firmicutes
Class: Bacilli
Order: Lactobacillales
Family: Leuconostocaceae
Garrity et al. 2001


The Leuconostocaceae are a family of Gram-positive bacteria, placed within the order of Lactobacillales. Representative genera include Fructobacillus, Leuconostoc, Oenococcus, and Weissella. Bacteria that belong to these three genera are nonspore-forming, round or elongated in shape, and anaerobic or aerotolerant. They usually inhabit nutrient-rich environments such as milk, meat, vegetable products, and fermented drinks.[1] Lactic acid is the main end product of their characteristic heterofermentative carbohydrate metabolism. The phylogeny of the family Leuconostocaceae has recently been evaluated.[2]


  1. Björkroth, J., and W. Holzapfel. 2006. Genera Leuconostoc, Oenococcus and Weissella, p.267 -319. In M. Dworkin (ed.), The prokaryotes: a handbook on the biology of bacteria: Firmicutes, Cyanobacteria, vol. 4, 3rd ed. Springer-Verlag, New York, NY. [1]
  2. Chelo IM, Ze-Ze L, Tenreiro R. Congruence of evolutionary relationships inside the Leuconostoc-Oenococcus-Weissella clade assessed by phylogenetic analysis of the 16S rRNA gene, dnaA, gyrB, rpoC and dnaK. Int J Syst Evol Microbiol. 2007 February;57(Pt 2):276-86. PMID 17267964

External links