User:Kensei97/sandbox
From Wikipedia, the free encyclopedia
The Class Gammaproteobacteria belongs to the Proteobacteria phylum and contains about 250 genera, which makes it the most genera-rich taxa of the Prokaryotes.[1] Several medically, ecologically, and scientifically important groups of bacteria belong to this class. It is composed by all Gram-negative microbes and is the most phylogenetically and physiologically diverse class of Proteobacteria[2]. The word Gammaproteobacteria comes from three Greek words: the Greek letter "gamma" (γ) meaning "changeable", the word proteakos (πρωτεϊκός) "little stick", and βακτήριον, that means "bacterium", so it means "changeable little stick bacterium". The name is refered to Proteus, the Greek sea god who could change his shape.[3] These microorganisms can live in several terrestrial and marine environments, in which they play various important roles, including extreme environments like the hydrotermal vents. They generally have different shapes, like rods, curved rods, cocci, spirilla, and filaments[4] and include free living bacteria, biofilm formers, commensals and symbionts[5], some also have the distinctive trait of being bioluminescent. [6] Metabolisms found in the different genera are very different; there are both aerobic and anaerobic (obligate or facultative) species, chemolithoautotrophics, chemoorganotrophics, photoautotrophs and heterotrophs. [7]
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Kensei97/sandbox | |
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Vibrio cholerae | |
Scientific classification | |
Domain: | Bacteria |
Phylum: | Pseudomonadota |
Class: | Gammaproteobacteria |
Orders | |
Acidiferrobacterales |