Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Paenibacillaceae, Genus Paenibacillus, Paenibacillus thailandensis
Khianngam, Akaracharanya, Tanasupawat, Lee and Lee, 2009.
Gram-positive, motile (peritrichous flagella) rods, 0.8-1.2 x 4-12 µm. Produce
ellipsoidal, central / subterminal spore in swollen sporangium.
Colonies are white, convex, 1-3 mm in diameter after incubation at 37 ºC for 2 days on
C agar (5 g peptone Difco, 1 g yeast extract Difco, 4 g K2HPO4, 1 g MgSO4 * 7H2O, 0.2
g KCl,0.02 g FeSO4 * 7H2O and 1000 ml distilled water and adjusted to pH 7.0).
Aerobic and anaerobic growth. Growth temperature 20-55 ºC, optimum 37 ºC. No
growth at 15 ºC. Can grow in 3%, but not in 5% NaCl. Grows at pH 7-9 (optimum pH
7.5), but not at pH 5-6.5.
The type strain was isolated from soil in Thailand.
- Khianngam S., Akaracharanya A., Tanasupawat S., Lee J.-S. and Lee K.C., 2009. Paenibacillus thailandensis sp. nov. and
Paenibacillus nanensis sp. nov., xylanase-producing bacteria from Thai soil. IJSEM 59,564-568.
Positive results for xylanase, catalase, citrate utilization, DN-ase, hydrolysis of esculin, hydrolysis of starch, hydrolysis of Tween 80,
oxidase, Voges-Proskauer, acid production from: N-acetylglucosamine, adonitol, aesculin, amygdalin, L- or D-arabinose, arabitol,
arbutin, cellobiose, dulcitol, erythritol, fructose, D- or L-fucose, galactose, beta-gentiobiose, gluconate, D-glucose, methyl-alpha-D-
glucoside, glycerol, glycogen, inositol, inulin, 5-ketogluconate, lactose, lyxose, maltose, D-mannitol, mannose, methyl-alpha-D-
mannoside, melezitose, melibiose, raffinose, ribose, rhamnose, salicin, starch, sorbitol, sorbose, tagatose, trehalose, turanose,
xylitol, D- or L-xylose & methyl-beta-D-xyloside.
Negative results for arginine dihydrolase, dihydroxyacetone production, H2S production, indole production, nitrate reduction,
hydrolysis of casein, hydrolysis of gelatin, hydrolysis of urea, methyl red, degradation of tyrosine, acid production from: sucrose & 2-
(c) Costin Stoica