diazotroph

(noun)

A microorganism that can fix nitrogen.

Related Terms

  • capnophile

Examples of diazotroph in the following topics:

  • Gas Requirements

    • Diazotrophs are microorganisms that fix atmospheric nitrogen gas into a more usable form such as ammonia.
    • A diazotroph is an organism that is able to grow without external sources of fixed nitrogen.
    • Some example free-living diazotrophs include: 1) obligate anaerobes that cannot tolerate oxygen even if they are not fixing nitrogen.
    • Some higher plants, and some animals (termites), have formed associations (symbioses) with diazotrophs.
    • Examples of those diazotrophs include: rhizobia that associate with legumes, plants of the Fabaceae family, frankias, and cyanobacteria that associate with fungi as lichens, with liverworts, with a fern, and with a cycad.
  • Nitrogenase and Nitrogen Fixation

    • Microorganisms that fix nitrogen are bacteria called diazotrophs.
    • Some higher plants, and some animals (termites), have formed associations (symbioses) with diazotrophs.
    • Diazotrophs are microbes.
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