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...

    An artistic depiction of a human embryo
    Growth and Development of a Human Baby

    Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

    Genetic engineering
    Genetic Engineering Advantages & Disadvantages

    This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..

    river
    Running Water Freshwater Communities

    This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..

    Mātauranga Māori and Science Collaboration
    Mātauranga Māori and Science

    Mātauranga Māori is the living knowledge system of the indigenous people of New Zealand, including the relationships t..

    Bryophytes
    Bryophytes

    Bryophytes (nonvascular plants) are a plant group characterized by lacking vascular tissues. They include the mosses, th..

    An artist depiction of a Precambrian multicellular life form.
    The Evolution of Cell Organelles

    The nucleus containing the genetic material, DNA, and the mitochondria, well-identified as the "powerhouse of the cell",..