Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Paenibacillaceae, Genus Paenibacillus, Paenibacillus assamensis Saha,
Mondal, Makyilraj, Krishnamurthi, Bhattacharta and Chakrabarti 2005.
Description is based on a single isolate.
Gram-variable, motile rods, 0.5–0.6 x 1.0–2.5 μm, single cells or pairs.
Produce ellipsoidal spores positioned terminally in swollen sporangia.
Colonies are convex with undulated margins and light yellowish-white, spreading as
single colonies over the entire plate. Aerobic; no anaerobic growth. Grow in TSB and
on TSA. Mesophilic, growth temperature 20 to 37 ºC, no growth at 40 ºC. Grow at
6.8-12.0 pH and in 2.5% NaCl, but not in 3% NaCl media.
Isolated from a warm-spring water sample from a reserve forest (inhabited by wild elephants and other animals) in Assam, India.
Can grow in the presence of 0,001% lysozyme but not 0,01% lysozyme.
- Priest F.G., 2009. Genus I. Paenibacillus Ash, Priest and Collins 1994. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W.
Ludwig, F.A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes,
- Saha P., Mondal A.K., Mayilraj S., Krishnamurthi S., Bhattacharya A. and Chakrabarti , 2005. Paenibacillus assamensis sp. nov., a
novel bacterium isolated from a warm spring in Assam, India. IJSEM 55, 2577-2581.
Positive results for catalase, oxidase, arginine dihydrolase, hydrolysis of aesculin,
hydrolysis of starch, hydrolysis of gelatin, acid production from: amygdalin, cellobiose
(weak), D-glucose, glycerol, glycogen, beta-gentiobiose, mannose, maltose, ribose, sucrose (weak), starch & trehalose (weak).
Negative results for hydrolysis of casein, hydrolysis of urea, hydrolysis of Tween 80, 40 & 20, nitrate reduction, Voges-Proskauer,
DN-ase, lysine decarboxylase, ornithine decarboxylase, tryptophan deaminase, indole production, dihydroxyacetone, degradation of
tyrosine, citrate utilization, deamination of phenylalanine, H2S production, methyl red test, ONPG, acid production from: adonitol, D- or
L-arabinose, L-arabitol, arbutin, dulcitol, fructose, galactose, inositol, inulin, lactose, D-mannitol, melezitose, melibiose, raffinose,
rhamnose, salicin, sorbitol, sorbose, xylitol & D-xylose.
(c) Costin Stoica