[1] The bacterium is rod-shaped, and has a obligate endosymbiotic relationship with the arbuscular-mycorrhizal fungi Gigaspora margarita.

[3] The candidate bacteria is considered "the smallest beta-proteobacterium" with a genome size of 1.4 Mb.

In certain studies, it has been found that over multiple generations of cloning certain spores of Gigaspora margarita contain no bacteria.

[4] The fungi were able to grow and complete their life cycle supporting that they can live without the symbiotic bacteria inside of them.

"G. gigasporarum" has only been found inside the fungi, it is the current idea that it cannot live by itself.