Paenibacillus macerans – NBRC 15307

Paenibacillus macerans

Paenibacillus macerans

Paenibacillus macerans is a diazotroph bacterium found in soil and plants capable of nitrogen fixation and fermentation. This bacteria was originally discovered in 1905 by an Austrian biologist named Schardinger and thought to be a bacillus.

Paenibacillus macerans is a part of the Paenibacillaceae family which are facultative anaerobes. It is gram-variable, being gram-positive or gram-negative rods. Does not have a capsule and has peritrichous flagella for movement. It does form ellipsoidal, terminal, or subterminal spores which may last in the soil for many years.

P. macerans can be grown in the lab on a nurtient agar with a slightly acidic pH around 5. Optimal growth temperature is 30 °C. Also is able to grow in 5% NaCl making it a halotolerant bacteria.

P. macerans has been shown to have some of the broadest metabolic capabilities of any of the Paenibacillus genus. It is able to ferment hexoses, deoxyhexoses, pentoses, cellulose, hemicellulose and glycerol under anaerobic conditions. The high fermentation rates of glycerol makes this an important organism in the study of fuel and chemical production. P. Macerans also produces a significant amount of histamines which may cause allergies in some individuals if ingested. This bacterium is a facultative anaerobe capable of nitrogen fixation so in the absence of oxygen it is able to convert nitrogen gas to ammonia which is more easily used by plant.

NBRC No. NBRC 15307
Scientific Name of this Strain Paenibacillus macerans (Schardinger 1905) Ash et al. 1994
Synonymous Name
Synonym: Bacillus macerans
Type Strain type
Accepted Date 1992/05/14
Isolated Year
Deposited Year
History IFO 15307 <- JCM 2500 <- CCM 2012 <- R.E. Gordon
Other Culture Collection No. ATCC 8244=CCM 2012=DSM 24=JCM 2500=KCTC 1822=LMG 6324=NCIMB 9368=NCTC 6355=BCRC 14680=CCUG 7423=CFBP 4253=CIP 66.19=HAMBI 1958=HAMBI 636=IAM 12467=LMG 13281=NCCB 48019=NRRL B-172=NRRL B-394=NRRL B-4267=VKM B-506
Other No.
Rehydration Fluid 702
Medium 802
Cultivation Temp. 30 C
Oxygen Relationship
Source of Isolation
Locality of Source
Country of Origin
Biosafety Level
Mating Type
Genetic Marker
Plant Quarantine No.
Animal Quarantine No.
Herbarium No.
Comment Genome Information: PRJDB1366 (NCBI BioProject).
References 120,1099,1114
Sequences 16S rDNA
Shipping as Glass ampoule (L-dried)