There is no evidence of pathogenicity for humans.
Yersinia mollaretii
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacterales, Family Yersiniaceae, Genus Yersinia, Yersinia mollaretii
Wauters et al. 1988.

Old synonyms:
Y. enterocolitica biogroup 3A (Bercovier et al., 1978), Y. enterocolitica biogroup 6 (Wauters et al., 1987).
Gram-negative, bipolar, 1.0-3.0 x 0.5-0.8 μm rods. Motile in vitro, but nonmotile in vivo.
Non-motile at 37 ºC, but motile with 2-15 peritrichous flagella when grown below 30
ºC.
Small, gray-white, opaque, irregular colonies, 0.1 to 1.0 mm in diameter after 24
hours incubation. Facultatively anaerobic, optimum growth temperature 28 ºC. Growth
is delayed (7 d) when cultures are incubated at 41
ºC and even at 37 ºC for some
isolates. Most strains produce a “musty” or “cabbage-like” odor when grown on
nutrient agar. Media: Nutrient Agar or Nutrient Broth, Trypticase Soy Agar ± 5% sheep
blood, Mac Conkey - lactose negative colonies.
Isolated from human stool specimens, meat, raw vegetables, soil, and drinking water.
  1. J. G. Holt et al., 1994. Facultatively Anaerobic Gram-Negative Rods. Subgroup 1. Family Enterobacteriaceae. In: Begey’s Manual of
    Determinative Bacteriology, 9th-edition, Williams & Wilkins, pp 175-189.
  2. Bercovier H., Steigerwalt A.G.) Guiyoule A., Huntley-Carter G. & Brenner D.J.: Yersinia aldovae (formerly Yersinia enterocolitica-like
    group X2): a new species of Enterobacteriaceae isolated from aquatic ecosystems. Int. J. Syst. Bacteriol., 1984, 34, 166-172.
  3. Sprague L.D. & Neubauer H.: Yersinia aleksiciae sp. nov. Int. J. Syst. Evol. Microbiol., 2005, 55, 831-835.
  4. Frederiksen W.: A study of some Yersinia pseudotuberculosis-like bacteria (Bacterium enterocoliticum and Pasteurella X).
    Proceedings of the XIV Scandinavian Congress of Pathology and Microbiology, Oslo 1964, Norwegian Universities Press, Oslo,
    1964, pp. 103-104.
  5. Neubauer H., Aleksic S., Hensel A., Finke E.J. & Meyer H.: Yersinia enterocolitica 16S rRNA gene types belong to the same
    genospecies but form three homology groups. Int. J. Med. Microbiol., 2000, 290, 61-64.
  6. Ursing J., Brenner D.J., Bercovier H., Fanning G.R., Steigerwalt A.G., Brault J. & Mollaret H.H.: Yersinia frederiksenii: a new species
    of Enterobacteriaceae composed of rhamnose-positive strains (formerly called atypical Yersinia enterocolitica or Yersinia
    enterocolitica-like). Curr. Microbiol., 1980, 4, 213-217.
  7. Brenner D.J., Bercovier H., Ursing J., Alonso J.M., Steigerwalt A.G., Fanning G.R., Carter G.P. & Mollaret H.H.: Yersinia intermedia:
    a new species of Enterobacteriaceae composed of rhamnose-positive, melibiose-positive, raffinose-positive strains (formerly
    called Yersinia enterocolitica or Yersinia enterocolitica-like). Curr. Microbiol., 1980, 4, 207-212.
  8. Wauters G., Janssens M., Steigerwalt A.G. & Brenner D.J.: Yersinia mollaretii sp. nov. and Yersinia bercovieri sp. nov., formerly
    called Yersinia enterocolitica biogroups 3A and 3B. Int. J. Syst. Bacteriol., 1988, 38, 424-429.
  9. JUDICIAL OPINION 60: Rejection of the name Yersinia pseudotuberculosis subsp. pestis (van Loghem) Bercovier et al. 1981 and
    conservation of the name Yersinia pestis (Lehmann and Neumann) van Loghem 1944 for the plague bacillus. Int. J. Syst.
    Bacteriol., 1985, 35, 540
  10. Hollis D.G., Weaver R.E., Steigerwalt A.G., Wenger J.D., Moss C.W. & Brenner D.J.: Francisella philomiragia comb. nov. (formerly
    Yersinia philomiragia) and Francisella tularensis biogroup novicida (formerly Francisella novicida) associated with human
    disease. J. Clin. Microbiol., 1989, 27, 1601-1608.
  11. Aleksic S., Steigerwalt A.G., Bockemuhl J., Hunrley-Carter G.P. & Brenner D.J.: Yersinia rohdei sp. nov. isolated from human and
    dog feces and surface water. Int. J. Syst. Bacteriol., 1987, 37, 327-332.
  12. Ewing W.H., Ross A.J., Brenner D.J. & Fanning G.R.: Yersinia ruckeri sp. nov., the redmouth (RM) bacterium. International Journal
    of Systematic Bacteriology, 1978, 28, 37-44.
  13. Vicky Merhej, Toïdi Adékambi, Isabelle Pagnier, Didier Raoult, and Michel Drancourt: Yersinia massiliensis sp. nov., isolated from
    fresh water. Int J Syst Evol Microbiol April 2008 58:779-784.
  14. Lisa D. Sprague, Holger C. Scholz, Sabine Amann, H.-J. Busse, and Heinrich Neubauer: Yersinia similis sp. nov., Int J Syst Evol
    Microbiol April 2008 58:952-958.
  15. Don J. Brenner and J.J. Farmer III, 2001. Family I. Enterobacteriaceae. In: Bergey’s Manual of Systematic Bacteriology, Second
    edition, Vol two, part B, George M. Garrity (Editor-in-Chief), pp 587-897.
  16. Roberto A. Souza,  Deise P. Falcão, Juliana P. Falcão: Emended description of Yersinia massiliensis. International Journal of
    Systematic and Evolutionary Microbiology 61: 1094-1097, 2011.
  17. Adeolu M, Alnajar S, Naushad S, S Gupta R. Genome-based phylogeny and taxonomy of the 'Enterobacteriales': proposal for
    Enterobacterales ord. nov. divided into the families Enterobacteriaceae, Erwiniaceae fam. nov., Pectobacteriaceae fam. nov.,
    Yersiniaceae fam. nov., Hafniaceae fam. nov., Morganellaceae fam. nov., and Budviciaceae fam. nov. Int J Syst Evol Microbiol
    2016; 66:5575-5599.
Some tests results may be negative at 37 ºC; optimum temperature is 28 ºC.

Positive results for catalase, methyl red, nitrates reduction, pyrazinamidase, acid production from glucose (usually without gas),
D-mannitol, D-mannose and trehalose.

Negative results for oxidase, arginine dihydrolase, lysine decarboxylase, DN-ase, H
2S production, Voges-Proskauer reaction,
phenylalanine deaminase, gelatin hydrolysis, growth on KCN medium, citrate utilization, malonate utilization, acid production from:
lactose, meso-inositol, dulcitol, mucate, erythritol and adonitol.
(c) Costin Stoica
Antibiogram
Encyclopedia
Culture media
Biochemical tests
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R E G N U M
PROKARYOTAE
 
ONPG
Esculin
hydrolysis
Ornithine
decarboxylase
Urea
hydrolysis
L-Rhamnose
fermentation
Cellobiose
fermentation
Salicin
fermentation
Sucrose
fermentation
Y. aldovae
-
+
d
d
-
-
-
[-]
Y. bercovieri
[+]
[-]
[+]
d
-
+
[-]
+
Y. enterocolitica
+
[-]
+
[+]
-
[+]
[-]
+
Y. fredriksenii
+
[+]
+
[+]
+
+
+
+
Y. intermedia
+
+
+
[+]
+
+
+
+
Y. kristensenii
d
-
+
[+]
-
+
[-]
+
Y. massiliensis
+
+
+
+
-
+
+
+
Y. mollaretii
-
-
[+]
[-]
-
+
[-]
[+]
Y. pestis
d
d
-
-
-
-
d
-
Y. pseudotuberculosis
d
+
-
+
d
-
d
-
Y. rohdei
d
-
[-]
d
-
[-]
-
[-]
Y. ruckeri
d
-
+
-
-
-
-
+
Y. similis
-
+
-
+
+
-
-
-
Differential characters:
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Legend:  + positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74%.