Dictionary > Gammaproteobacteria

Gammaproteobacteria

Definition
noun
(taxonomy) A class within Phylum Proteobacteria that includes unicellular bacteria that are mostly rod-shaped and heterotrophic (with the exception of purple-sulfur bacteria, which are photoautotrophic)
Supplement
The class Gammaproteobacteria belongs to the Phylum Proteobacteria. The phylum includes many other classes, which are referred to using Greek letters, i.e. Alphaproteobacteria, Betaproteobacteria, Deltaproteobacteria, Epsilonproteobacteria, and Zetaproteobacteria. Their name, Gammaproteobacteria, is derived from the Greek letter gamma, which means ‘changeable’, and the Greek proteakos, which means ‘little stick’.1 The Gammaproteobacteria includes many medically and scientifically important bacterial species, e.g. Escherichia coli (pathogenic strains cause gastroenteritis and food poisoning), Salmonella (certain species as causative agent of typhoid fever), Yersinia pestis (causing Bubonic plague), Vibrio cholerae (causing cholera), Pseudomonas aeruginosa (causing lung infections), and so on. Members of this class are unicellular and mostly are bacilli.
Some of the taxonomic orders belonging to the Class Gammaproteobacteria are as follows: Aeromonadales, Alteromonadales, Cardiobacteriaceae, Chromatiales (purple sulfur bacteria), Enterobacteriales, Legionellales (e.g. Legionella pneumophila causing Legionnaires’ disease), Methylococcales, Oceanospirillales , Pasteurellales, Pseudomonadales, Thiotrichales (e.g. Thiomargarita namibiensis, the largest known bacterium), Vibrionales (Vibrio cholerae), Xanthomonadales, etc.
Scientific classification:

See also:

  • Enterobacteria
  • Reference(s):

    1 Holt, J. R. (2013). GAMMAPROTEOBACTERIA. Retrieved from http://comenius.susqu.edu/biol/202/eubacteria/proteobacteriae/gammaproteobacteria/.


    You will also like...

    Disturbance on a still water
    Abiotic Factors – Water Conditions

    A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

    Freshwater lake ecosystem
    Freshwater Producers and Consumers

    Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

    Regulation of Biological Systems
    Regulation of Biological Systems

    Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..

    Crossing Over and Genetic Diversity
    Inheritance and Probability

    Gregor Mendel, an Austrian monk, is most famous in this field for his study of the phenotype of pea plants, including ..

    Golgi apparatus (3-D illustration)
    Role of Golgi Apparatus & Endoplasmic Reticulum in Protein Synthesis

    The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis a..

    Fossil trilobite imprint in the sediment
    Insects

    There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..