Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Enterococcaceae, Genus Pilibacter, Pilibacter termitis Higashiguchi et
al. 2006, type species of the genus.
Gram-positive (discolored in older culture), irregular rods occurring alone, in pairs
and in palisade formations. Rods are usually straight, but curved forms do occur and
the rods typically appear tapered at the end. Non-motile. Non-spore-forming.
Colonies are cream coloured and alpha-haemolytic when grown on blood agar.
Growth is observed at 20 ºC but not at 42 ºC. Anaerobic. No growth is observed in
Isolated from the hindgut of the Formosan subterranean termite (Coptotermes formosanus).
Resistant to optochin. Susceptibility to bacitracin is variable.
- Higashiguchi (D.T.), Husseneder (C.), Grace (J.K.) and Berestecky (J.M.): Pilibacter termitis gen. nov., sp. nov., a lactic acid
bacterium from the hindgut of the Formosan subterranean termite (Coptotermes formosanus). Int. J. Syst. Evol. Microbiol., 2006,
Positive results for esculin hydrolysis, methyl red reduction, acid production from: amygdalin, arbutin, D-cellobiose, D-fructose, D-
galactose, gentiobiose, D-glucose, N-acetylglucosamine, D-lactose, D-maltose, D-mannose, salicin, D-sorbitol, D-trehalose & D-
Negative results for DNase, gelatin hydroysis, hippurate hydroysis, indole production, nitrates reduction, L-pyrrolidonyl beta-
naphthylamide hydrolysis, starch hydroysis, urea hydroysis, Voges–Proskauer reaction, acid production from: D- and L-arabitol, D-
adonitol, D- and L-arabinose, dulcitol, erythritol, D- and L-fucose, glycerol, glycogen, methyl alpha-D-glucopyranoside, potassium
gluconate, potassium 2- and 5-ketogluconate, inositol, inulin, D-lyxose, D-mannitol, D-melezitose, D-melibiose, methyl alpha-D-
mannopyranoside, D-raffinose, L-rhamnose, D-ribose, L-sorbose, starch, sucrose, D-tagatose, D-turanose, xylitol & L-xylose.
Variable results for acid production from methyl beta-D-xylopyranoside.
(c) Costin Stoica