Gammaproteobacteria
Gammaproteobacteria is a class of several medically, ecologically, and scientifically important groups of bacteria. An exceeding number of species of this class are pathogenic. The class includes a variety of important pathogens, such as Escherichia, Salmonella, Yersinia, Legionellales, and others.
Taxonomy[edit | edit source]
The Gammaproteobacteria class is a part of the Proteobacteria phylum, which is one of the largest phyla and contains a vast diversity of bacterial species. The Gammaproteobacteria class is further divided into several orders, including Enterobacterales, Vibrionales, Pseudomonadales, and others.
Characteristics[edit | edit source]
Gammaproteobacteria are Gram-negative bacteria, which means they do not retain the violet crystal violet stain used in the Gram staining method of bacterial differentiation. They are usually rod-shaped and are found in a variety of environments, including water, soil, and humans.
Pathogenicity[edit | edit source]
Many species of Gammaproteobacteria are pathogenic and can cause diseases in humans and animals. For example, Escherichia coli is a common cause of food poisoning, while Salmonella species can cause salmonellosis and typhoid fever. Yersinia pestis, the causative agent of plague, is also a member of this class.
Ecological Importance[edit | edit source]
In addition to their role as pathogens, Gammaproteobacteria also play important roles in various ecological processes. For example, they are involved in the nitrogen cycle, where they convert nitrogen gas into a form that can be used by plants. Some species are also involved in the sulfur cycle.
See Also[edit | edit source]
References[edit | edit source]
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