Microaerophile

A microaerophile is a microorganism that requires environments containing lower levels of dioxygen than that are present in the atmosphere (i.e. < 21% O2; typically 2–10% O2) for optimal growth.[1] A more restrictive interpretation requires the microorganism to be obligate in this requirement.[2][3] Many microaerophiles are also capnophiles, requiring an elevated concentration of carbon dioxide (e.g. 10% CO2 in the case of Campylobacter species).[4]

The original definition of a microaerophile has been criticized for being too restrictive and not accurate enough compared to similar categories. The broader term microaerobe has been coined to describe microbes able to respire oxygen "within microoxic environments by using high-affinity terminal oxidase".[1]

  1. ^ a b Fuduche, Maxime; Davidson, Sylvain; Boileau, Céline; Wu, Long-Fei; Combet-Blanc, Yannick (19 March 2019). "A Novel Highly Efficient Device for Growing Micro-Aerophilic Microorganisms". Frontiers in Microbiology. 10: 534. doi:10.3389/fmicb.2019.00534. PMC 6434946. PMID 31001208.
  2. ^ Hogg, S. (2005). Essential Microbiology (1st ed.). Wiley. pp. 91–107. ISBN 0-471-49754-1.
  3. ^ Prescott LM, Harley JP, Klein DA (1996). Microbiology (3rd ed.). Wm. C. Brown Publishers. pp. 130–131. ISBN 0-697-29390-4.
  4. ^ Brooks GF, Carroll KC, Butel JS, Morse SA (2007). Jawetz, Melnick & Adelberg's Medical Microbiology (24th ed.). McGraw Hill. pp. 273–275. ISBN 978-0-07-128735-7.
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