These bacteria include six species of the genus Rhizobium.
The P. ahipa plant is therefore able to form an efficient symbiosis with nitrogen-fixing bacteria, such as Rhizobium and Bradyrhizobium, and is able to fix 58–80 kg nitrogen per hectare.
As soil-forming pioneer trees the drought-resistant Sungkai (Peronema canessceus) and legumes such as Acacia mangium which fix nitrogen through symbiotic Rhizobium bacteria in their root nodules.
Legumes are inoculated with bacteria of the genus Rhizobium which induce nitrogen-fixing nodules in the roots of legumes.
Running Buffalo Clover is also the only known species of Trifolium that has no apparent rhizobial association.
Tribromoanisole is usually produced when naturally occurring airborne fungi and/or bacteria (usually Aspergillus sp., Penicillium sp., Actinomycetes, Botrytis cinerea, Rhizobium sp., or Streptomyces) are presented with brominated phenolic compounds, which they then convert into bromoanisole derivatives.
TCA is usually produced when naturally occurring airborne fungi and bacteria (usually Aspergillus sp., Penicillium sp., Actinomycetes, Botrytis cinerea, Rhizobium sp., or Streptomyces) are presented with chlorinated phenolic compounds, which they then convert into chlorinated anisole derivatives.
Root nodules that occur on non-legume genera like Parasponia in association with Rhizobium bacteria, and those that arise from symbiotic interactions with Actinobacteria Frankia in some plant genera such as Alnus, vary significantly from those formed in the legume-rhizobia symbiosis.