Related Research Articles
The Clostridia are a highly polyphyletic class of Bacillota, including Clostridium and other similar genera. They are distinguished from the Bacilli by lacking aerobic respiration. They are obligate anaerobes and oxygen is toxic to them. Species of the class Clostridia are often but not always Gram-positive and have the ability to form spores. Studies show they are not a monophyletic group, and their relationships are not entirely certain. Currently, most are placed in a single order called Clostridiales, but this is not a natural group and is likely to be redefined in the future.
The Halanaerobiales are an order of bacteria placed within the class Clostridia, and encompassing two families, the Halanaerobiaceae and the Halobacteroidaceae. Originally placed within the highly polyphyletic class Clostridia, according to the NCBI and LPSN, it is now thought to lie outside the Bacillota. Halanaerobiales are halophilic obligate anaerobes with a fermentative or homoacetogenic metabolism.
The Thermoanaerobacterales is a polyphyletic order of bacteria placed within the polyphyletic class Clostridia, and encompassing four families: the Thermoanaerobacteraceae, the Thermodesulfobiaceae, the Thermoanaerobacterales Family III. Incertae Sedis, and the Thermoanaerobacterales Family IV. Incertae Sedis, and various unplaced genera.
The Veillonellaceae are a family of the Clostridia, formerly known as Acidaminococcaceae. Bacteria in this family are grouped together mainly based on genetic studies, which place them among the Bacillota. Supporting this placement, several species are capable of forming endospores. However, they differ from most other Bacillota in having Gram-negative stains. The cell wall composition is peculiar.
Caldicellulosiruptor is a genus of thermophilic, anaerobic, Gram-positive, non-spore forming bacteria. Originally placed within the highly polyphyletic class Clostridia, order Thermoanaerobacterales and family Thermoanaerobacterales Family III according to the NCBI and LPSN, it is now thought to lie outside of the Bacillota. Caldicellulosiruptor is known to degrade and ferment complex carbohydrates from plant matter, such as cellulose and hemicellulose, and certain species in the genus have been identified as potential candidates for biofuel production.
The Negativicutes are a class of bacteria in the phylum Bacillota, whose members have a peculiar cell wall with a lipopolysaccharide outer membrane which stains gram-negative, unlike most other members of the Bacillota. Although several neighbouring Clostridia species also stain gram-negative, the proteins responsible for the unusual diderm structure of the Negativicutes may have actually been laterally acquired from Pseudomonadota. Additional research is required to confirm the origin of the diderm cell envelope in the Negativicutes.
Acidaminococcus is a genus in the phylum Bacillota (Bacteria), whose members are anaerobic diplococci that can use amino acids as the sole energy source for growth. Like other members of the class Negativicutes, they are gram-negative, despite being Bacillota, which are normally gram-positive.
Dehalogenimonas is a genus in the phylum Chloroflexota (Bacteria). Members of the genus Dehalogenimonas can be referred to as dehalogenimonads.
Sporomusa is a genus of Bacillota bacteria classified within the class Negativicutes.
Megamonas is a genus of Bacillota bacteria classified within the class Negativicutes.
The Thermaerobacter are an unassigned genus of bacteria placed within the class clostridia. Originally placed within the highly polyphyletic class Clostridia, order Clostridiales, according to the NCBI and LPSN, it is now thought to lie outside of the Bacillota.
The Selenomonadales are an order of bacteria within the class Negativicutes; unlike most other members of Bacillota, they are Gram-negative. The phylogeny of this order was initially determined by 16S rRNA comparisons. More recently, molecular markers in the form of conserved signature indels (CSIs) have been found specific for all Selenomonadales species. On the basis of these markers, the Selenomonadales are inclusive of two distinct families, and are no longer the sole order within the Negativicutes. Several CSIs have also been found specific for both families, Sporomusaceae and Selenomonadceae. Samples of bacterial strains within this order have been isolated from the root canals of healthy human teeth.
Moorella is a genus of bacteria belonging to the phylum Bacillota.
Pelosinus is a genus of Bacillota bacteria classified within the class Negativicutes.
Hydrogenobacter is a genus of bacteria, one of the few in the phylum Aquificota. Type species is H. thermophilus. This genus belongs to Bacteria as opposed to the other inhabitants of extreme environments, the Archaea.
Orenia is a genus of bacteria from the family of Halobacteroidaceae. Orenia bacteria occurs in saline environments.
Halanaerobium is a gram-negative, non-endospore-forming, rod-shaped, and strictly anaerobic genus of bacteria from the family Halanaerobiaceae.
The Thermodesulfobacteriaceae are a family of sulfate-reducing bacteria.
Thermosediminibacteraceae is a family of Gram positive bacteria in the class Clostridia.
Tepidanaerobacteraceae is a family of Gram positive bacteria in the class Clostridia.
References
- 1 2 J.P. Euzéby. "Megasphaera". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2022-09-09.
- 1 2 Sayers; et al. "Megasphaera". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2022-09-09.
- ↑ Yutin N, Galperin MY (2013) A genomic update on Clostridial phylogeny: Gram-negative spore formers and other misplaced Clostridia. Environ Microbiol doi: 10.1111/1462-2920.12173
- ↑ "The LTP" . Retrieved 20 November 2023.
- ↑ "LTP_all tree in newick format" . Retrieved 20 November 2023.
- ↑ "LTP_08_2023 Release Notes" (PDF). Retrieved 20 November 2023.
- ↑ "GTDB release 08-RS214". Genome Taxonomy Database . Retrieved 20 June 2023.
- ↑ "bac120_r214.sp_labels". Genome Taxonomy Database . Retrieved 20 June 2023.
- ↑ "Taxon History". Genome Taxonomy Database . Retrieved 20 June 2023.
- Arik, H. D., Gulsen, N., Hayirli, A., & Alatas, M. S. (2019). Efficacy of Megasphaera elsdenii inoculation in subacute ruminal acidosis in cattle. Journal of animal physiology and animal nutrition, 103(2), 416–426.
 | This Bacillota-related article is a stub. You can help Wikipedia by expanding it. |