What does the published scientific research say about Acaulospora colombiana?

Acaulospora colombiana — catalogued in older literature as Entrophospora columbiana and Kuklospora columbiana — is an arbuscular mycorrhizal fungus (AMF) with three PubMed-indexed studies examining its potential as an agricultural inoculant. Researchers selecting native AMF for sustainable crop production have identified this species as persistently dominant in cassava rhizosphere communities, a pattern used as a criterion in formal screening protocols.

Peer-reviewed research reports that A. colombiana inoculation significantly improved cassava growth and yield under field conditions, outperforming a commercial inoculant in head-to-head trials. The same study cited enhanced water stress tolerance and bioprotective effects against root-knot nematodes (Meloidogyne spp.). A separate publication on Mimosa scabrella seedlings found an 11.6-fold biomass increase with Acaulospora colombiana, alongside elevated nitrogen, phosphorus, and potassium concentrations across a range of soil phosphorus levels.

A third study evaluated Acaulospora colombiana in soil containing coal-mine tailings, finding that 40% root colonization in Enterolobium contorstisiliquum seedlings was associated with reduced copper and zinc translocation to shoot tissue and higher soil glomalin concentrations. The authors cite these as indicators of phytoprotection in heavy-metal-stressed substrates — an effect not observed for all AMF species tested in parallel.