Streptococcus merionis
Unknown.
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Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Streptococcaceae, Genus Streptococcus, Streptococcus merionis  
Tappe et al. 2009. Lancefield group D (weak reaction).
Gram-positive cocci, nonmotile, nonsporeforming, grouped in long chains when
cultured in liquid media.
Colonies on 5% sheep blood Columbia agar are grey, non-haemolytic and 0.7–1.0
mm in diameter after 24 h incubation.Grows well on both Columbia sheep blood agar
and chocolate agar at 37 ºC in a 5% CO
2 -enriched atmosphere. Growth at 45 ºC is
weak; growth does not occur at 10 ºC. No growth in 6.5% NaCl. Weak growth occurs
facultatively under anaerobic conditions.
Isolated from the oropharynges of  Mongolian jirds (Meriones unguiculatus).
  1. Tappe D., Pukall R., Schumann P., Gronow S., Spiliotis M., Claus H., Brehm K. & Vogel U.: Streptococcus merionis sp. nov., isolated
    from Mongolian jirds (Meriones unguiculatus). Int. J. Syst. Evol. Microbiol., 2009, 59, 766-770.
  2. Zaina Kadri,  Mohamed Amar,  Mouna Ouadghiri,  Margo Cnockaert,  Maarten Aerts,  Omar El Farricha, Peter Vandamme.
    Streptococcus moroccensis sp. nov. and Streptococcus rifensis sp. nov., isolated from raw camel milk. Int J Syst Evol Microbiol, July
    2014 64: 2480-2485.
Positive for esculin hydrolysis, hippurate hydrolysis, leucine aminopeptidase,arginine dihydrolase, beta-glucuronidase, beta-
galactosidase, beta-glucosidase, beta-mannosidase and alanine-phenylalanineproline arylamidase, acid production from lactose,
trehalose, inulin, raffinose, starch, maltose, pullulan, and methyl beta-D-glucopyranoside.

Negative for catalase, oxidase, gelatinase, pyrrolidonyl arylamidase, alpha-galactosidase, alkaline phosphatase, urease, Voges–
Proskauer reaction, acid production from D-ribose, L-arabinose, D-mannitol, D-sorbitol, glycogen, D-xylose, inositol, D-rhamnose,
melibiose, and amygdalin.
(c) Costin Stoica
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