diazotroph

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.