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Enterobacteriaceae is a large family of Gram-negative bacteria. It was first proposed by Rahn in 1936, and now includes over 30 genera and more than 100 species. Its classification above the level of family is still a subject of debate, but one classification places it in the order Enterobacterales of the class Gammaproteobacteria in the phylum Proteobacteria.
Proteobacteria is a major phylum of Gram-negative bacteria. They include a wide variety of pathogenic genera, such as Escherichia, Salmonella, Vibrio, Helicobacter, Yersinia, Legionellales, and many others. Others are free-living (nonparasitic) and include many of the bacteria responsible for nitrogen fixation.
Clostridium is a genus of Gram-positive bacteria. This genus includes several significant human pathogens, including the causative agents of botulism and tetanus. The genus formerly included an important cause of diarrhea, Clostridioides difficile, which was separated after 16S rRNA analysis. They are obligate anaerobes capable of producing endospores. The normal, reproducing cells of Clostridium, called the vegetative form, are rod-shaped, which gives them their name, from the Greek κλωστήρ or spindle. Clostridium endospores have a distinct bowling pin or bottle shape, distinguishing them from other bacterial endospores, which are usually ovoid in shape. Clostridium species inhabit soils and the intestinal tract of animals, including humans. Clostridium is a normal inhabitant of the healthy lower reproductive tract of females.
Mollicutes is a class of bacteria distinguished by the absence of a cell wall. The word "Mollicutes" is derived from the Latin mollis, and cutis. Individuals are very small, typically only 0.2–0.3 μm in size and have a very small genome size. They vary in form, although most have sterols that make the cell membrane somewhat more rigid. Many are able to move about through gliding, but members of the genus Spiroplasma are helical and move by twisting. The best-known genus in the Mollicutes is Mycoplasma.
The Rhizobiales are an order of Gram-negative Alphaproteobacteria.
Actinomycosis is a rare infectious bacterial disease caused by Actinomyces species. About 70% of infections are due to either Actinomyces israelii or A. gerencseriae. Infection can also be caused by other Actinomyces species, as well as Propionibacterium propionicus, which presents similar symptoms. The condition is likely to be polymicrobial aerobic anaerobic infection.
Haemophilus is a genus of Gram-negative, pleomorphic, coccobacilli bacteria belonging to the family Pasteurellaceae. While Haemophilus bacteria are typically small coccobacilli, they are categorized as pleomorphic bacteria because of the wide range of shapes they occasionally assume. These organisms inhabit the mucous membranes of the upper respiratory tract, mouth, vagina, and intestinal tract. The genus includes commensal organisms along with some significant pathogenic species such as H. influenzae—a cause of sepsis and bacterial meningitis in young children—and H. ducreyi, the causative agent of chancroid. All members are either aerobic or facultatively anaerobic. This genus has been found to be part of the salivary microbiome.
Flavobacterium is a genus of Gram-negative, nonmotile and motile, rod-shaped bacteria that consists of 130 recognized species. Flavobacteria are found in soil and fresh water in a variety of environments. Several species are known to cause disease in freshwater fish.
In taxonomy, the Thermococci are a class of microbes within the Euryarchaeota.
In taxonomy, the Methanopyrales are an order of microbes within the class methanopyri.
The class Bacteroidia is composed of two orders of bacteria, the Bacteroidales and the Marinilabiliales. Members of the order Bacteroidales are by far the most studied species within the phylum Bacteroidetes. Some species of the genus Bacteroides are opportunistic pathogens. Before the fourth volume of Bergey's Manual of Systematic Bacteriology came out, the class Bacteroidia was referred to as Bacteroidetes, like the phylum it belongs to.
In taxonomy, Methanocaldococcus is a genus of the Methanocaldococcaceae.
Monera is a kingdom that contains unicellular organisms with a prokaryotic cell organization, such as bacteria. They are single-celled organisms with no true nuclear membrane.
Bergey’s Manual of Systematic Bacteriology is the main resource for determining the identity of prokaryotic organisms, emphasizing bacterial species, using every characterizing aspect.
Bacterial taxonomy is the taxonomy, i.e. the rank-based classification, of bacteria.
Asaia is a genus of Gram-negative, aerobic and rod-shaped bacteria from the family of Acetobacteraceae which occur in tropical plants. Asaia might be able to control malaria by massively colonizing the midgut and the male reproductive system of the mosquito Anopheles stephensi
Hymenobacter is a Gram-negative and non-motile bacterial genus from the family of Flavobacteriaceae.
Aquimarina is a strictly aerobic and halophilic bacterial genus from the family of Flavobacteriaceae. Aquimarina can cause diseases in marine eukaryotes.
Facklamia is a Gram-positive genus of bacteria from the family of Aerococcaceae. Facklamia bacteria are pathogens in humans.
Marinomonas is an aerobic bacteria genus from the family of Oceanospirillaceae.
References
- 1 2 3 4 5 Parte, A.C. "Filibacter". LPSN .
- ↑ "Filibacter". www.uniprot.org.
- ↑ Juo, Pei-Show (2001). Concise Dictionary of Biomedicine and Molecular Biology (2nd ed.). Hoboken: CRC Press. ISBN 1-420-04130-4.
