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Taylorella
Taylorella is a genus comprising Gram-negative, short rod-shaped, chemoorganotrophic bacteria that include species that are the causative agents of contagious equine metritis. The name Taylorella serves as a dedication to C.E.D. Taylor, the scientist who identified the only species originally included in this genus. They are non-motile microaerophiles that are able to be isolated in pure culture on chocolate agar. . Phylogeny The genus Taylorella was first identified by C.E.D Taylor in 1978. It was formerly classified under the genus Haemophilus, and there was originally considerable debate on whether it is more closely related to Moraxella. Due to further investigation by DNA: DNA hybridization and genomic characteristics of this genus, Sugimoto et al. 1983 proposed the creation of a new genus that would include two species isolated from the family Equidae. The species include: * ''Taylorella equigenitalis'': causes contagious equine metritis in horses. * ''Taylorella asinigeni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taylorella Equigenitalis
Introduction and overview ''Taylorella equigenitalis'' is a Gram-negative, non-motile, microaerophilic bacterium of the genus '' Taylorella'', and the causative agent of contagious equine metritis (CEM) in horses. Phylogeny of ''T. equigenitalis'' includes being part of the ''Alcaligenaceae'' family. ''Taylorella equigenitalis's'' distribution and habitat are primarily in the urethral fossa, distal urethra, prepuce, free-part of the penis of stallions and the clitoral fossa or sinus of mares. Canada and the USA are ''T. equigenitalis'' free, compared to other countries like those in Europe. Infected stallions are asymptomatic and act as the principal source of infection for mares during mating, and their carrier status may persist for many months or even years. A mare that becomes infected normally has recognizable signs unless asymptomatic, contributing to the spread of disease. A symptomatic mare can be identified by the mucus and pus being expelled from her vagina; CEM mares ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taylorella Asinigenitalis
''Taylorella asinigenitalis'' is a Gram-negative, catalase- and oxidase-positive, nonmotile bacterium of the genus ''Taylorella'', isolated from the genital tract of male donkeys (''Equus asinus'') in California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m .... References External linksType strain of ''Taylorella asinigenitalis'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Burkholderiales Bacteria described in 1984 {{betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contagious Equine Metritis
Contagious equine metritis (CEM) is a type of metritis (uterine inflammation) in horses that is caused by a sexually transmitted infection. It is thus an equine venereal disease of the equine reproductive system, genital tract of horses, brought on by the ''Taylorella equigenitalis'' bacteria and spread through sexual contact. The disease was first reported in 1977, and has since been reported worldwide. Signs Signs in mares appear ten to fourteen days after breeding to an infected or carrier stallion. A gray to creamy vulvar discharge mats the hair of the buttocks and tail, although in many cases, the discharge is absent and the infection is not apparent. Most mares recover spontaneously, although many become carriers. Infected mares are usually infertile during the acute illness. However, the infertility only lasts a few weeks, after which pregnancy is possible. Stallions do not show signs of infection. The first indication of the carrier state is lack of pregnancy in the ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcaligenaceae
The Alcaligenaceae are a family of bacteria, included in the order Burkholderiales. Members are found in water, soil, humans, and other animals.Garrity, George M.; Brenner, Don J.; Krieg, Noel R.; Staley, James T. (eds.) (2005). ''Bergey's Manual of Systematic Bacteriology, Volume Two: The Proteobacteria'', Part C: The Alpha-, Beta-, Delta-, and Epsilonproteobacteria. New York: Springer. pp. 354–361. . Some species, like ''Bordetella ''Bordetella'' () is a genus of small (0.2 – 0.7 µm), gram-negative coccobacilli of the phylum Pseudomonadota. ''Bordetella'' species, with the exception of '' B. petrii'', are obligate aerobes, as well as highly fastidious, or difficult ...'', are pathogenic for humans and for some other animals. References Burkholderiales {{betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteria
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudomonadota
Pseudomonadota (synonym Proteobacteria) is a major phylum of Gram-negative bacteria. The renaming of phyla in 2021 remains controversial among microbiologists, many of whom continue to use the earlier names of long standing in the literature. The phylum Proteobacteria includes a wide variety of pathogenic genera, such as ''Escherichia'', '' Salmonella'', ''Vibrio'', ''Yersinia'', ''Legionella'', and many others.Slonczewski JL, Foster JW, Foster E. Microbiology: An Evolving Science 5th Ed. WW Norton & Company; 2020. Others are free-living (nonparasitic) and include many of the bacteria responsible for nitrogen fixation. Carl Woese established this grouping in 1987, calling it informally the "purple bacteria and their relatives". Because of the great diversity of forms found in this group, it was later informally named Proteobacteria, after Proteus, a Greek god of the sea capable of assuming many different shapes (not after the Proteobacteria genus ''Proteus''). In 2021 the Internat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betaproteobacteria
Betaproteobacteria are a class of Gram-negative bacteria, and one of the eight classes of the phylum Pseudomonadota (synonym Proteobacteria). The ''Betaproteobacteria'' are a class comprising over 75 genera and 400 species of bacteria. Together, the ''Betaproteobacteria'' represent a broad variety of metabolic strategies and occupy diverse environments from obligate pathogens living within host organisms to oligotrophic groundwater ecosystems. Whilst most members of the ''Betaproteobacteria'' are heterotrophic, deriving both their carbon and electrons from organocarbon sources, some are photoheterotrophic, deriving energy from light and carbon from organocarbon sources. Other genera are autotrophic, deriving their carbon from bicarbonate or carbon dioxide and their electrons from reduced inorganic ions such as nitrite, ammonium, thiosulfate or sulfide — many of these chemolithoautotrophic. ''Betaproteobacteria'' are economically important, with roles in maintaining soil p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burkholderiales
The Burkholderiales are an order of Pseudomonadota.George M. Garrity: '' Bergey's Manual of Systematic Bacteriology''. 2. Auflage. Springer, New York, 2005, Vol. 2: ''The Proteobacteria Part C: The Alpha-, Beta-, Delta-, and Epsilonproteabacteria'' Like all Pseudomonadota, they are Gram-negative. They include several pathogenic bacteria, including species of ''Burkholderia'', ''Bordetella'', and ''Ralstonia''. They also include '' Oxalobacter'' and related genera, which are unusual in using oxalic acid as their source of carbon. Other well-studied genera include ''Alcaligenes'', '' Cupriavidus'', ''Achromobacter'', ''Comamonas'', '' Delftia'', ''Massilia'', '' Duganella'', '' Janthinobacterium'', ''Polynucleobacter'' (important freshwater bacterioplankton), non-pathogenic ''Paraburkholderia'', '' Caballeronia'', '' Polaromonas'', ''Thiomonas'', ''Collimonas'', '' Hydrogenophaga'', ''Sphaerotilus'', '' Variovorax'', '' Acidovorax'', '' Rubrivivax'' and ''Rhodoferax'' (both members ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horse
The horse (''Equus ferus caballus'') is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of ''Equus ferus''. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, ''Eohippus'', into the large, single-toed animal of today. Humans began domesticating horses around 4000 BCE, and their domestication is believed to have been widespread by 3000 BCE. Horses in the subspecies ''caballus'' are domesticated, although some domesticated populations live in the wild as feral horses. These feral populations are not true wild horses, as this term is used to describe horses that have never been domesticated. There is an extensive, specialized vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colors, markings, breeds, locomotion, and behavior. Horses are adapted to run, allowing them to quickly escape predators, and po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donkey
The domestic donkey is a hoofed mammal in the family Equidae, the same family as the horse. It derives from the African wild ass, ''Equus africanus'', and may be classified either as a subspecies thereof, ''Equus africanus asinus'', or as a separate species, ''Equus asinus''. It was domesticated in Africa some years ago, and has been used mainly as a working animal since that time. There are more than 40 million donkeys in the world, mostly in underdeveloped countries, where they are used principally as draught or pack animals. While working donkeys are often associated with those living at or below subsistence, small numbers of donkeys or asses are kept for breeding or as pets in developed countries. A male donkey is known as a ''jack'' or ''jackass'', a female is a ''jenny'' or ''jennet'', and an immature donkey of either sex is a '' foal''. Jacks are often mated with female horses (mares) to produce '' mules''; the less common hybrid of a male horse (stallion) and j ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pathogen
In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term ''pathogen'' came into use in the 1880s. Typically, the term ''pathogen'' is used to describe an ''infectious'' microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. Small animals, such as helminths and insects, can also cause or transmit disease. However, these animals are usually referred to as parasites rather than pathogens. The scientific study of microscopic organisms, including microscopic pathogenic organisms, is called microbiology, while parasitology refers to the scientific study of parasites and the organisms that host them. There are several pathways through which pathogens can invade a host. The principal pathways have different episodic time frames, but soil has the longest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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