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Bacillus subtilis, known also as the hay bacillus or grass bacillus, is a Gram-positive, catalase-positive bacterium, found in soil and the gastrointestinal tract of ruminants and humans. As a member of the genus Bacillus, B. subtilis is rod-shaped, and can form a tough, protective endospore, allowing it to tolerate extreme environmental conditions. B. subtilis has historically been classified as an obligate aerobe, though evidence exists that it is a facultative anaerobe. B. subtilis is considered the best studied Gram-positive bacterium and a model organism to study bacterial chromosome replication and cell differentiation. It is one of the bacterial champions in secreted enzyme production and used on an industrial scale by biotechnology companies.
Bacillus clausii is a rod-shaped,motile and spore-forming bacterium that lives in the soil. It is classified as probiotic microorganism that maintains a symbiotic relationship with the host organism. It is currently being studied in respiratory infections and some gastrointestinal disorders. Bacillus clausii has been found to produce antimicrobial substances that are active against gram positive bacteria including Staphylococcus aureus, Enterococcus faecium and Clostridium difficile. It is sold by Sanofi as Enterogermina.
Bacillus alcalophilus is a Gram-positive, rod-shaped species of bacteria. Likely strains of this species have been isolated from highly alkaline waste water. B. alcalophilus is a moderate halotolerant obligate alkaliphile growing at 40 °C and at pH 9-10.5 that has been isolated from soil and animal manures.
Bacillus clarkii is a facultative anaerobe bacterium. It is a gram positive, alkaliphilic and alkalitolerant, aerobic endospore-forming bacteria.
Bacillus gibsonii is a facultative anaerobe bacterium. It is a gram positive, alkaliphilic and alkalitolerant, aerobic endospore-forming bacteria.
Bacillus pseudofirmus is a facultative anaerobe bacterium. It is a gram positive, alkaliphilic and alkalitolerant, aerobic endospore-forming bacteria.
Oceanobacillus iheyensis is a bacterium, the type species of its genus. It is a deep-sea species, having been isolated from a depth of 1,050 metres (3,440 ft), and is extremely halotolerant and alkaliphilic. Its type strain is HTE831. Oceanobacillus iheyensis HTE831 is an alkaliphilic and extremely halotolerant Bacillus-related species isolated from deep-sea sediment.
Lysinibacillus fusiformis is a gram-positive, rod-shaped bacterium of the genus Lysinibacillus. Scientists have yet to completely characterize this microbe's pathogenic nature. Though little is known about this organism, several genome sequencing projects for various strains of L. fusiformis are currently underway.
Bacillus boroniphilus is a species of highly boron-tolerant bacterium, hence its name. It is Gram-positive, motile, and rod-shaped, with type strain T-15ZT. Its genome has been sequenced.
Brevibacillus borstelensis is a Gram-positive, aerobic, rod-shaped, endospore-forming bacterium of the genus Brevibacillus. The genome of several B. borstelensis strains have been sequenced.
Caldalkalibacillus is an aerobic and spore-forming genus of bacteria from the family of Bacillaceae the stains either Gram-positive or Gram-variable. The type species of this genus is Caldalkalibacillus thermarum.
Salibacterium is a genus of Gram-positive bacteria from the family of Bacillaceae. The type species is Salibacterium halotolerans.
Salisediminibacterium is a genus of Gram-positive bacteria from the family of Bacillaceae. The type species is Salisediminibacterium halotolerans.
Metabacillus is a genus of rod-shaped bacteria exhibiting Gram-positive or Gram-variable staining in the family Bacillaceae within the order Bacillales. The type species for this genus is Metabacillus fastidiosus.
Cytobacillus is a genus of rod-shaped bacteria that stain either Gram-positive or Gram-variable in the family Bacillaceae within the order Bacillales. The type species for this genus is Cytobacillus firmus.
Peribacillus is a genus of rod-shaped bacteria that exhibits Gram-positive or Gram-variable staining. They fall in the family Bacillaceae within the order Bacillales. The type species for this genus is Peribacillus simplex.
Mesobacillus is a genus of gram-positive or gram-variable, rod-shaped bacteria in the family Bacillaceae within the order Bacillales. The type species for this genus is Mesobacillus jeotgali.
Niallia is a genus of Gram-Positive rod-shaped bacteria in the family Bacillaceae from the order Bacillales. The type species of this genus is Niallia circulans.
Robertmurraya is a genus of mostly Gram-Positive rod-shaped bacteria in the family Bacillaceae from the order Bacillales. The type species of this genus is Robertmurraya siralis.
Alkalicoccus is a genus of Gram-Positive rod-shaped bacteria in the family Bacillaceae from the order Bacillales. The type species of this genus is Alkalicoccus saliphilus.
References
- ↑ Takami, Hideto; Horikoshi, Koki (1 January 1999). "Reidentification of Facultatively Alkaliphilic Bacillus sp. C-125 to Bacillus halodurans". Bioscience, Biotechnology, and Biochemistry. 63 (5): 943–945. doi: 10.1271/bbb.63.943 . PMID 27385575.
- 1 2 Takami, H. (2000). "Complete genome sequence of the alkaliphilic bacterium Bacillus halodurans and genomic sequence comparison with Bacillus subtilis". Nucleic Acids Research. 28 (21): 4317–4331. doi:10.1093/nar/28.21.4317. PMC 113120 .
- ↑ Patel, Sudip; Gupta, Radhey S. (2020-01-01). "A phylogenomic and comparative genomic framework for resolving the polyphyly of the genus Bacillus: Proposal for six new genera of Bacillus species, Peribacillus gen. nov., Cytobacillus gen. nov., Mesobacillus gen. nov., Neobacillus gen. nov., Metabacillus gen. nov. and Alkalihalobacillus gen. nov". International Journal of Systematic and Evolutionary Microbiology. 70 (1): 406–438. doi:10.1099/ijsem.0.003775. ISSN 1466-5026.
- ↑ Danesh, A; Mamo, G; Mattiasson, B (July 2011). "Production of haloduracin by Bacillus halodurans using solid-state fermentation". Biotechnology Letters. 33 (7): 1339–44. doi:10.1007/s10529-011-0581-0. PMID 21384193.
- ↑ Takami, H.; Nakasone, K.; Hirama, C.; Takaki, Y.; Masui, N.; Fuji, F.; Nakamura, Y.; Inoue, A. (Jan 1999). "An improved physical and genetic map of the genome of alkaliphilic Bacillus sp. C-125". Extremophiles. 3 (1): 21–8. doi:10.1007/s007920050095. PMID 10086841.
