Firmicutes
phylum of bacteria
The Firmicutes are a phylum of bacteria, most of which have the Gram-positive type of cell walls.
| Firmicutes | |
|---|---|
| |
| Bacillus subtilis, Gram stained | |
| Scientific classification | |
| Domain: | |
| Phylum: | Firmicutes
|
| Classes | |
Classes change
The group is typically divided into the Clostridia, which are anaerobic, the Bacilli, which are aerobic, and the Mollicutes, a class of bacteria which do not have cell walls.
On phylogenetic trees, the first two groups show up as paraphyletic or polyphyletic, as do their main genera, Clostridium and Bacillus.[1]
Health change
Firmicutes make up the largest portion of the mouse and human gut microbiome.[2] The division Firmicutes as part of the gut flora has been shown to be involved in energy resorption and obesity.[3][4][5]
References change
- ↑ Wolf M.; et al. (2004). "Phylogeny of Firmicutes with special reference to Mycoplasma (Mollicutes) as inferred from phosphoglycerate kinase amino acid sequence data". Int. J. Syst. Evol. Microbiol. 54 (Pt 3): 871–5. doi:10.1099/ijs.0.02868-0. PMID 15143038. Archived from the original on 2012-12-09. Retrieved 2014-03-28.
- ↑ "Ecological and evolutionary forces shaping microbial diversity in the human intestine". Cell (Review). 124 (4): 837–48. 2006. doi:10.1016/j.cell.2006.02.017. PMID 16497592. S2CID 17203181.
{{cite journal}}: Cite uses deprecated parameter|authors=(help) - ↑ "Microbial ecology: human gut microbes associated with obesity". Nature (Clinical Trial). 444 (7122): 1022–3. 2006. doi:10.1038/4441022a. PMID 17183309. S2CID 205034045.
{{cite journal}}: Cite uses deprecated parameter|authors=(help) - ↑ Henig, Robin Marantz (2006-08-13). "Fat Factors". New York Times Magazine. Retrieved 2008-09-28.
- ↑ Ley R.E.; et al. (2005). "Obesity alters gut microbial ecology". Proc. Natl. Acad. Sci. U.S.A. (Research Support). 102 (31): 11070–5. doi:10.1073/pnas.0504978102. PMC 1176910. PMID 16033867.