Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Lactobacillaceae, Genus Lactobacillus, Lactobacillus saniviri Oki,
Kudo and Watanabe 2012.
Description is based on a single isolate.
Gram-positive rods, 1.0 x 1.5-3.0 µm, occurring singly, in pairs or in short chains.
After anaerobic growth at 37 ºC for 72 h, colonies on MRS agar are circular to slightly
irregular, 1.5-2.0 mm in diameter and beige with a smooth surface. After aerobic
growth at 37 ºC for 72 h on blood agar, alpha-haemolysis is observed. Facultatively
anaerobic. Can grow at 10 ºC, but not at 45 ºC. Range of pH 4.0-8.5. Can grow in 5%
NaCl, but not in 8% NaCl.
Isolated from faeces of a healthy Japanese adult male in Tokyo, Japan.
- Oki K., Kudo Y. and Watanabe K., 2012. Lactobacillus saniviri sp. nov. and Lactobacillus senioris sp. nov., isolated from human
faeces. IJSEM 62, 601-607.
Positive results for aesculin hydrolysis, fermentation of: amygdalin, arbutin, cellobiose, fructose, galactose, glucose (acid production
without gas), gluconate, 2-ketogluconate, N-acetylglucosamine, glycerol, beta-gentiobiose, maltose, mannitol, mannose, melezitose
(weak reaction), melibiose, raffinose, ribose, salicin, sorbitol, starch (weak reaction), sucrose, tagatose & trehalose.
Negative results for arginine hydrolysis (NH3 from arginine), catalase, nitrate reduction, fermentation of: adonitol, D- or L-arabinose,
D- or L-arabitol, dulcitol, erythritol, fucose, 5-ketogluconate, glycogen, inositol, inulin, lactose, D-lyxose, rhamnose, sorbose, turanose,
xylitol, D- or L-xylose.
(c) Costin Stoica