Growth of the bacterium on plant roots prevents Rhizoctonia and Fusarium spores from germinating.
Medusahead was found to be susceptible to certain root rot fungi including crown rot and take-all, but it was not susceptible to barepatch, browning root rot, and common root rot.
An efficient conversion of tryptophan to indole-3-acetic acid and/or tryptophol can be achieved by some species of fungi in the genus Rhizoctonia.
Like other orchids, the creeping lady's tresses live in symbiosis with a mycorrhiza, a rhizome-dwelling fungus (Ceratobasidium cornigerum or Rhizoctonia goodyearae-repentis).
It has been shown to provide protection against such pathogens as Rhizoctonia, Pythium and even Armillaria.