Psychroflexus Tropicus
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Psychroflexus Tropicus
''Psychroflexus tropicus'' is an obligately halophilic ''Cytophaga–Flavobacterium–Bacteroides'' group bacterium. It is Gram-negative Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wa ..., fine rod- to short filament-shaped, with type strain LA1T (=ATCC BAA-734T =DSM 15496T). References Further reading *Schinner, Franz, Jean-Claude Marx, and Charles Gerday, eds. Psychrophiles: from biodiversity to biotechnology. Berlin, Heidelberg: Springer, 2008. * *Villanueva, Laura, et al. "Combined phospholipid biomarker-16S rRNA gene denaturing gradient gel electrophoresis analysis of bacterial diversity and physiological status in an intertidal microbial mat." Applied and Environmental Microbiology 70.11 (2004): 6920–6926. * External links LPSN*Type strain of ''Psychroflexus tropicu ...
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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 re ...
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Bacteroidota
The phylum Bacteroidota (synonym Bacteroidetes) is composed of three large classes of Gram-negative, nonsporeforming, anaerobic or aerobic, and rod-shaped bacteria that are widely distributed in the environment, including in soil, sediments, and sea water, as well as in the guts and on the skin of animals. Although some ''Bacteroides'' spp. can be opportunistic pathogens, many ''Bacteroidota'' are symbiotic species highly adjusted to the gastrointestinal tract. ''Bacteroides'' are highly abundant in intestines, reaching up to 1011 cells g−1 of intestinal material. They perform metabolic conversions that are essential for the host, such as degradation of proteins or complex sugar polymers. ''Bacteroidota'' colonize the gastrointestinal tract already in infants, as non-digestible oligosaccharides in mother milk support the growth of both '' Bacteroides'' and '' Bifidobacterium'' spp. ''Bacteroides'' spp. are selectively recognized by the immune system of the host through specif ...
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Flavobacteriia
The class Flavobacteriia is composed of a single order of environmental bacteria. According to Bernardet ''et al''., Flavobacteriia are Gram-negative aerobic rods, 2–5 μm long, 0.3–0.5 μm wide, with rounded or tapered ends that are motile by gliding, yellow (cream to orange) colonies on agar, decompose several polysaccharides but not cellulose, G+C contents of 32–37%, and are widely distributed in soil and fresh and seawater habitats. In particular, Flavobacteriia are prominent members of marine biofilms. The type species ''Flavobacterium aquatile'' was isolated from a well in Kent, England. Flavobacteriia are a group of commensal bacteria and opportunistic pathogens. ''Flavobacterium psychrophilum'' causes the septicemic diseases rainbow trout fry syndrome and bacterial cold water disease Bacterial cold water disease (BCWD) is a bacterial disease of freshwater fish, specifically salmonid fish. It is caused by the bacterium '' Flavobacterium psych ...
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Flavobacteriales
The order Flavobacteriales comprises several families of environmental bacteria. Comparative genomics and molecular signatures ''Flavobacteriales'' is of one of the orders from the phylum ''Bacteroidota''. Comparative genomic studies have identified several conserved indels, as well as 27 proteins that are uniquely shared by different sequenced Flavobacteriales and Bacteroidota species supporting this inference. Additionally, these studies have also identified 38 proteins that seem to be specific for the species from the order ''Flavobacteriales''. Of these proteins, 26 were present in all sequenced species, while the remaining 12 were missing in only one or two species. These signature proteins provide potential molecular markers for this order. Several proteins have also been identified which are unique to the ''Flavobacteriales'' and '' Bacteroidales'' orders, indicating the species from these two orders shared a common ancestor exclusive of other ''Bacteroidota''. Phylogeny ...
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Flavobacteriaceae
The family Flavobacteriaceae is composed of environmental bacteria. Most species are aerobic, while some are microaerobic to anaerobic; for example '' Capnocytophaga'' and ''Coenonia''. Genera The family ''Flavobacteriaceae'' comprises the following genera: * '' Actibacter'' Kim ''et al''. 2008 * ''Aequorivita'' Bowman and Nichols 2002 * ''Aestuariibaculum'' Jeong ''et al''. 2013 * '' Aestuariimonas'' Park ''et al''. 2018 * '' Aestuariivivens'' Park ''et al''. 2015 * ''Algibacter'' Nedashkovskaya ''et al''. 2004 * '' Algitalea'' Yoon ''et al''. 2015 * "''Algorimicrobium''" García-López ''et al''. 2019 * "''Altibacter''" Chen ''et al''. 2014 * "''Altuibacter''" Chen ''et al''. 2013 * ''Amniculibacterium'' Chen ''et al''. 2020 * "''Candidatus'' Amoebinatus" Greub ''et al''. 2004 * '' Antarcticibacterium'' Li ''et al''. 2018 * '' Antarcticimonas'' Yang ''et al''. 2014 * ''Aquaticitalea'' Xamxidin ''et al''. 2016 * ''Aquibacter'' Hameed ''et al''. 2014 * ''Aquimarina'' Nedashk ...
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Psychroflexus
''Psychroflexus'' is a psychrophilic bacteria genus from the family of Flavobacteriaceae. References Further reading

* * * * Flavobacteria Bacteria genera Psychrophiles {{Flavobacteria-stub ...
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Halophilic
The halophiles, named after the Greek word for "salt-loving", are extremophiles that thrive in high salt concentrations. While most halophiles are classified into the domain Archaea, there are also bacterial halophiles and some eukaryotic species, such as the alga '' Dunaliella salina'' and fungus '' Wallemia ichthyophaga''. Some well-known species give off a red color from carotenoid compounds, notably bacteriorhodopsin. Halophiles can be found in water bodies with salt concentration more than five times greater than that of the ocean, such as the Great Salt Lake in Utah, Owens Lake in California, the Urmia Lake in Iran, the Dead Sea, and in evaporation ponds. They are theorized to be a possible analogues for modeling extremophiles that might live in the salty subsurface water ocean of Jupiter's Europa and similar moons. Classification Halophiles are categorized by the extent of their halotolerance: slight, moderate, or extreme. Slight halophiles prefer 0.3 to 0.8 M (1.7 ...
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Gram-negative
Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wall sandwiched between an inner cytoplasmic cell membrane and a bacterial outer membrane. Gram-negative bacteria are found in virtually all environments on Earth that support life. The gram-negative bacteria include the model organism ''Escherichia coli'', as well as many pathogenic bacteria, such as '' Pseudomonas aeruginosa'', '' Chlamydia trachomatis'', and '' Yersinia pestis''. They are a significant medical challenge as their outer membrane protects them from many antibiotics (including penicillin), detergents that would normally damage the inner cell membrane, and lysozyme, an antimicrobial enzyme produced by animals that forms part of the innate immune system. Additionally, the outer leaflet of this membrane comprises a complex ...
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Flavobacteria
The class Flavobacteriia is composed of a single order of environmental bacteria. According to Bernardet ''et al''., Flavobacteriia are Gram-negative aerobic rods, 2–5 μm long, 0.3–0.5 μm wide, with rounded or tapered ends that are motile by gliding, yellow (cream to orange) colonies on agar, decompose several polysaccharides but not cellulose, G+C contents of 32–37%, and are widely distributed in soil and fresh and seawater habitats. In particular, Flavobacteriia are prominent members of marine biofilms. The type species ''Flavobacterium aquatile'' was isolated from a well in Kent, England. Flavobacteriia are a group of commensal bacteria and opportunistic pathogens. ''Flavobacterium psychrophilum'' causes the septicemic diseases rainbow trout fry syndrome and bacterial cold water disease Bacterial cold water disease (BCWD) is a bacterial disease of freshwater fish, specifically salmonid fish. It is caused by the bacterium '' Flavobacterium psyc ...
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