Dictionary > Methanogenesis

Methanogenesis

Definition
noun
A metabolic process in certain microbes wherein methane is produced
Supplement
Methanogenesis is a metabolic process wherein methane is produced. It is usually the final step in the decomposition of biomass. Certain microbes are capable of producing methane as a byproduct. These microbes are referred to as methanogens. The methanogens belong to the domain Archaea. They thrive in anoxic conditions and are common in wetlands. They are the ones responsible for the production of marsh gas. Some of them are also found in the digestive tracts of animals, e.g. ruminants and humans. These microbes that live in the digestive tract are responsible for the presence of methane in ruminants’ belching and humans’ flatulence. Others live as extremophiles in hot springs and hydrothermal vents.1 Methanogens are strictly anaerobic. Most of them are sensitive to oxygen and are susceptible to oxygen stress especially for longer periods of time.
Methanogenesis may involve the use of acetic acid and carbon dioxide as terminal electron acceptors. It may also utilize carbon from organic sources such as formic acid, methanol, dimethyl sulfide, etc.
Word origin: methano– (methane) + genesis (beginning)
Synonym(s):

  • biomethanation

See also:

  • methanogen
  • methane
  • methanotroph
  • Reference(s):

    1 Methanogen. Wikipedia.org. Retrieved from ://en.wikipedia.org/wiki/Methanogen.


    You will also like...

    Freshwater aquatic plankton
    Freshwater Communities & Plankton

    Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..

    river
    Running Water Freshwater Communities

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

    Ecosystem Succession
    Ecosystem Succession

    If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..

    Peppered moth ("Biston betularia") melanic and light form
    Examples of Natural Selection

    Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

    Human Nervous System
    The Human Nervous System

    The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

    Plant Water Regulation
    Plant Water Regulation

    Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

    Related Articles...

    No related articles found

    See all Related Topics