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Veillonellaceae
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. Members of this family are all obligate anaerobes, and occur in habitats such as rivers, lakes, and the intestines of vertebrates. They range from spherical forms, such as ''Megasphaera'' and ''Veillonella'', to curved rods, as typified by the Selenomonads. ''Selenomonas'' has a characteristic crescent-shape, with flagella inserted on the concave side, while ''Sporomusa'' is similar but non-motile. Their names refer to this distinctive morphology: ''selene'' means moon, and ''musa'' means banana. The name Selenobacteria also refers to some this group. The description of this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Negativicutes
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 (firmicute bacteria) also stain gram-negative, the proteins responsible for the unusual diderm structure of the ''Negativicutes'' may have actually been laterally acquired from Pseudomonadota (formerly Proteobacteria). Additional research is required to confirm the origin of the diderm cell envelope in the Negativicutes. Most members of this class are obligate anaerobes, and occur in habitats such as rivers, lakes, and the intestines of vertebrates. They range from spherical forms, such as ''Megasphaera'' and ''Veillonella'', to curved rods, as typified by the selenomonads. ''Selenomonas'' has a characteristic crescent shape, with flagella inserted on the concave side, while ''Sporomusa'' is similar, but nonmo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acidaminococcaceae
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 (firmicute bacteria) also stain gram-negative, the proteins responsible for the unusual diderm structure of the ''Negativicutes'' may have actually been laterally acquired from Pseudomonadota (formerly Proteobacteria). Additional research is required to confirm the origin of the diderm cell envelope in the Negativicutes. Most members of this class are obligate anaerobes, and occur in habitats such as rivers, lakes, and the intestines of vertebrates. They range from spherical forms, such as ''Megasphaera'' and ''Veillonella'', to curved rods, as typified by the selenomonads. ''Selenomonas'' has a characteristic crescent shape, with flagella inserted on the concave side, while ''Sporomusa'' is similar, but non ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selenobacteria
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 (firmicute bacteria) also stain gram-negative, the proteins responsible for the unusual diderm structure of the ''Negativicutes'' may have actually been laterally acquired from Pseudomonadota (formerly Proteobacteria). Additional research is required to confirm the origin of the diderm cell envelope in the Negativicutes. Most members of this class are obligate anaerobes, and occur in habitats such as rivers, lakes, and the intestines of vertebrates. They range from spherical forms, such as ''Megasphaera'' and ''Veillonella'', to curved rods, as typified by the selenomonads. ''Selenomonas'' has a characteristic crescent shape, with flagella inserted on the concave side, while ''Sporomusa'' is similar, but nonmo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Bacteria Genera
This article lists the genera of the bacteria. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI). However many taxonomic names are taken from the GTDB release 07-RS207 (8th April 2022). Phyla {, border="0" style="width: 100%;" ! , - , style="border:0px" valign="top", {, class="wikitable sortable" style="width: 100%; font-size: 95%;" !Syperphylum !Phylum !Authority !Synonyms , - , Parakaryota , , , Myojin parakaryote , - , , " Canglongiota" , Zhang et al. 2022 , , - , , " Fervidibacteria" , , OctSpa1-106 , - , , " Heilongiota" , Zhang et al. 2022 , , - , , " Qinglongiota" , Zhang et al. 2022 , , - , , " Salinosulfoleibacteria" , Tazi et al. 2006 , , - , , " Teskebacteria" , Dojka 1998 , WS1 , - , , " Tharpellota" , Speth et al. 2022 , , - , Terrabacteria , Chloroflexota , Whitman et al. 2018 , "Thermomicrobiota" , - , Terrabacteria , " Dormibacterota ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Negativicoccus
''Negativicoccus'' is a Gram-negative and anaerobic genus of bacteria from the family of Veillonellaceae 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 sp .... References Further reading * * * Negativicutes Bacteria genera {{Firmicutes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaeroglobus
''Anaeroglobus'' is a Gram-negative, cocci, non-spore-forming, anaerobic and non-motile genus of bacteria from the family of Veillonellaceae 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 sp ... with one known species ('' Anaeroglobus geminatus''). References Further reading * Monotypic bacteria genera Bacteria genera {{Firmicutes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megasphaera
''Megasphaera'' is a genus of Bacillota bacteria classified within the class Negativicutes. This classification has been reexamined.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 It appears that this genus is a member of the ''Clostridia''. Phylogeny The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI) Unassigned species: * "''M. butyrica''" Hitch et al. 2021 * "''M. vaginalis''" Bordigoni et al. 2020 non Srinivasan et al. 2021 See also * List of bacterial vaginosis microbiota * List of bacterial orders * List of bacteria genera This article lists the genera of the bacteria. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Informat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selenomonas
Members of the genus ''Selenomonas'' (motile crescent-shaped bacteria in general) are referred to trivially as selenomonads. The genus ''Selenomonas'' constitutes a group of motile crescent-shaped bacteria and includes species living in the gastrointestinal tracts of animals, in particular the ruminants. A number of smaller forms discovered with the light microscope are now in culture but many, especially the large selenomonads are not, owing to their fastidious and incompletely known growth requirements. Gram stain The family ''Veillonellaceae'' was transferred from the order ''Eubacteriales'' to the new order ''Selenomonadales'' in the new class ''Negativicutes''. Despite most of the members of the ''Bacillota'' staining positive for the Gram stain and being trivially called "low-GC Gram-positives" (''c.f.'' Bacterial phyla), members of the ''Negativicutes'' stain Gram-negative and possess a double bilayer. This transfer now appears to have been mistaken. On further examina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veillonella
''Veillonella'' are Gram-negative bacteria (Gram stain pink) anaerobic cocci, unlike most Bacillota, which are Gram-positive bacteria. This bacterium is well known for its lactate fermenting abilities. It is a normal bacterium in the intestines and oral mucosa of mammals. In humans they have been implicated in cases of osteomyelitis and endocarditis, for example with the species ''Veillonella parvula''. ''Veillonella dispar'' is the most nitrate-reducing bacterium in the oral cavity, which is beneficially anti-bacterial. When ''Veillonella'' is responsible for clinical infections in humans, it should be kept in mind that more than 70% of the strains are resistant to penicillin. Fermentation Lactate is fermented to propionate and acetate by the methylmalonyl-CoA pathway. Little ATP is produced in this fermentation. High substrate affinity is suggested to be the reason. 3 Lactate → acetate + 2 propionate + + A study of Veillonella in endurance athletes found that a rela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Selenomonadales
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. Phylogeny The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI) See also * List of bacterial orders * List of bacteria genera This article lists the genera of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allisonella
''Allisonella'' is a Gram-negative, ovoid-shaped, histamine-producing and non-motile genus of bacteria from the family of Veillonellaceae 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 sp ... with one known species ('' Allisonella histaminiformans''). ''Allisonella'' is named after the American microbiologist M. J. Allison. References Monotypic bacteria genera Bacteria genera {{Firmicutes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megasphaera Paucivorans
''Megasphaera'' is a genus of Bacillota bacteria classified within the class Negativicutes. This classification has been reexamined.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 It appears that this genus is a member of the ''Clostridia''. Phylogeny The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI) Unassigned species: * "''M. butyrica''" Hitch et al. 2021 * "''M. vaginalis''" Bordigoni et al. 2020 non Srinivasan et al. 2021 See also * List of bacterial vaginosis microbiota * List of bacterial orders * List of bacteria genera This article lists the genera of the bacteria. The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Informat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |