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Gammaproteobacteria
''Gammaproteobacteria'' is a class of bacteria in the phylum ''Pseudomonadota'' (synonym ''Proteobacteria''). It contains about 250 genera, which makes it the most genus-rich taxon of the Prokaryotes. Several medically, ecologically, and scientifically important groups of bacteria belong to this class. All members of this class are Gram-negative. It is the most phylogenetically and physiologically diverse class of the ''Pseudomonadota''. Members of ''Gammaproteobacteria'' live in several terrestrial and marine environments, in which they play various important roles, including in extreme environments such as hydrothermal vents. They can have different shapes, rods, curved rods, cocci, spirilla, and filaments, and include free living bacteria, biofilm formers, commensals and symbionts; some also have the distinctive trait of being bioluminescent. Diverse metabolisms are found in ''Gammaproteobacteria''; there are both aerobic and anaerobic (obligate or facultative) species, chem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methylococcales
The Methylococcaceae are a family of bacteria that obtain their carbon and energy from methane, called methanotrophs.. They comprise the type I methanotrophs, in contrast to the Methylocystaceae or type II methanotrophs. They belong to Gammaproteobacteria, and are typically given their own order. The Methylococcaceae have internal membranes in the form of flattened discs, perpendicular to the cell wall. Methane is oxidized to give formaldehyde, which is fixed by a process called the ribulose monophosphate (RuMP) cycle. Here formaldehyde is combined with sugar ribulose, producing hexulose. This, in turn, is broken down to produce glyceraldehyde, which is used to produce new ribulose and other organic compounds. Catabolism does not involve a complete citric acid cycle.George M. Garrity: ''Bergey's Manual of Systematic Bacteriology ''Bergey's Manual of Systematic Bacteriology'' is the main resource for determining the identity of prokaryotic organisms, emphasizing bacterial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeromonadales
The Aeromonadales are an order of Pseudomonadota, with 10 genera in two families. - List of Prokaryotic names with Standing in Nomenclature The species are .George M. Garrity: '' Bergey's Manual of Systematic Bacteriology
''Bergey's Manual of Systematic Bacteriology'' is the main resource for determining the identity of prokaryotic organisms, emphasizing bacterial species, using every characterizing aspect.
The manual was published subsequent to ''B ...
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Orbales
The Orbales are an order of Pseudomonadota with the single family ''Orbaceae''. This order was created to accommodate novel bacterial species isolated from the guts of honeybees and bumblebee A bumblebee (or bumble bee, bumble-bee, or humble-bee) is any of over 250 species in the genus ''Bombus'', part of Apidae, one of the bee families. This genus is the only Extant taxon, extant group in the tribe Bombini, though a few extinct r ...s. References Gammaproteobacteria {{gammaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thiotrichales
Thiotrichales is an order of sulfur-oxidizing bacteria within the class Gammaproteobacteria known for their large size and ability to live in sulfur rich environments. Characteristics Thiotrichales has an important role in the sulfur and nitrogen cycles in marine and freshwater sediments, hydrothermal vents, and areas with an accumulation of organic matter. Most species oxidize sulfur compounds for energy metabolism. They often use nitrate as an electron acceptor, which contributes to the detoxification of sulfide-rich environments. These bacteria thrive when there is a gradient between oxygenated and anoxic zones, that can occur around hydrothermal vents. This is where Thiotrichales usually form microbial mats and biofilms is sulfur is abundant. This species of microbe can also be present in cold seep ecosystems where methane and sulfide seep through the seafloor. Thiotricales vary greatly in size. Ecological importance They can form symbiotic relationships with other organ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardiobacteriales
The Cardiobacteriaceae are a family of Pseudomonadota, given their own order. They are Gram-negative Gram-negative bacteria are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. Their defining characteristic is that their cell envelope consists ... and rod-shaped, with diameters around 0.5 to 1.7 μm and lengths from 1–6 μm.George M. Garrity: ''Bergey's Manual of Systematic Bacteriology'' 2. Auflage. Springer, New York, 2005, Volume 2: The Proteobacteria, Part B: The Gammaproteobacteria References Gammaproteobacteria {{gammaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cellvibrionales
The ''Cellvibrionales'' are an order of Gammaproteobacteria ''Gammaproteobacteria'' is a class of bacteria in the phylum ''Pseudomonadota'' (synonym ''Proteobacteria''). It contains about 250 genera, which makes it the most genus-rich taxon of the Prokaryotes. Several medically, ecologically, and scienti .... References Gammaproteobacteria Bacteria orders {{Gammaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudomonadota
Pseudomonadota (synonym "Proteobacteria") is a major phylum of gram-negative bacteria. Currently, they are considered the predominant phylum within the domain of bacteria. They are naturally found as pathogenic and free-living (non- parasitic) genera. The phylum comprises six classes ''Acidithiobacillia, Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Hydrogenophilia'', and '' Zetaproteobacteria.'' The Pseudomonadota are widely diverse, with differences in morphology, metabolic processes, relevance to humans, and ecological influence. Classification American microbiologist Carl Woese established this grouping in 1987, calling it informally the "purple bacteria and their relatives". The group was later formally named the 'Proteobacteria' after the Greek god Proteus, who was known to assume many forms. In 2021 the International Committee on Systematics of Prokaryotes designated the synonym Pseudomonadota, and renamed many other prokaryotic phyla as well. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vibrio Cholerae
''Vibrio cholerae'' is a species of Gram-negative bacteria, Gram-negative, Facultative anaerobic organism, facultative anaerobe and Vibrio, comma-shaped bacteria. The bacteria naturally live in Brackish water, brackish or saltwater where they attach themselves easily to the chitin-containing shells of crabs, shrimp, and other shellfish. Some strains of ''V. cholerae'' are pathogenic to humans and cause a deadly disease called cholera, which can be derived from the consumption of undercooked or raw marine life species or drinking contaminated water. ''V. cholerae'' was first described by Félix-Archimède Pouchet in 1849 as some kind of protozoa. Filippo Pacini correctly identified it as a bacterium and from him, the scientific name is adopted. The bacterium as the cause of cholera was discovered by Robert Koch in 1884. Sambhu Nath De isolated the cholera toxin and demonstrated the toxin as the cause of cholera in 1959. The bacterium has a flagellum (a tail like structure) at one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arsukibacterium
''Arsukibacterium'' is a Gram-negative, aerobic and motile genus of bacteria from the class Gammaproteobacteria ''Gammaproteobacteria'' is a class of bacteria in the phylum ''Pseudomonadota'' (synonym ''Proteobacteria''). It contains about 250 genera, which makes it the most genus-rich taxon of the Prokaryotes. Several medically, ecologically, and scienti ... with one known species ('' Arsukibacterium ikkense''). References Chromatiales Bacteria genera Monotypic bacteria genera Taxa described in 2016 Enigmatic bacteria taxa {{Chromatiales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azoamicus
"''Candidatus'' Azoamicus ciliaticola" is a candidate species of endosymbiotic bacteria belonging to the eub62A3 group of Gammaproteobacteria, characterized for its capacity to perform denitrification within its ciliate host in anaerobic water environments. It was isolated from Lake Zug in Switzerland and described in 2021. Ecology "''Ca''. A. ciliaticola" is an obligate endosymbiont of an anaerobic freshwater ciliate from the class Plagiopylea. The endosymbiont possesses a highly reduced genome of 0.29 Mbp, with a substantial fraction of its genes dedicated to energy production. "''Ca''. A. ciliaticola" contains a complete gene set for denitrification and is thus the first observed obligate endosymbiont with such a pathway. Extensive genetic potential for energy metabolism hints that the main function of the endosymbiont is to generate ATP and provide it to its ciliate host. ''Ca''. A. ciliaticola thus has functions which are similar to mitochondria, although it is not de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Litorivivens
''Litorivivens'' is a genus of bacteria from the class Gammaproteobacteria ''Gammaproteobacteria'' is a class of bacteria in the phylum ''Pseudomonadota'' (synonym ''Proteobacteria''). It contains about 250 genera, which makes it the most genus-rich taxon of the Prokaryotes. Several medically, ecologically, and scienti .... References Gammaproteobacteria Bacteria genera Enigmatic bacteria taxa {{Gammaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prokaryote
A prokaryote (; less commonly spelled procaryote) is a unicellular organism, single-celled organism whose cell (biology), cell lacks a cell nucleus, nucleus and other membrane-bound organelles. The word ''prokaryote'' comes from the Ancient Greek (), meaning 'before', and (), meaning 'nut' or 'kernel'. In the earlier two-empire system arising from the work of Édouard Chatton, prokaryotes were classified within the empire Prokaryota. However, in the three-domain system, based upon molecular phylogenetics, prokaryotes are divided into two domain (biology), domains: Bacteria and Archaea. A third domain, Eukaryote, Eukaryota, consists of organisms with nuclei. Prokaryotes evolution, evolved before eukaryotes, and lack nuclei, mitochondria, and most of the other distinct organelles that characterize the eukaryotic cell. Some unicellular prokaryotes, such as cyanobacteria, form colony (biology), colonies held together by biofilms, and large colonies can create multilayered microbial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
