What benefits of Gigaspora margarita have been cited in the scientific literature?
Gigaspora margarita (synonym: Gigaspora ramisporophora) is an arbuscular mycorrhizal fungus (AMF) with 10 benefit categories cited in peer-reviewed literature, spanning multiple crops and growth responses.
Studies on Gigaspora margarita plant growth promotion report dramatic results in low-fertility cotton (Gossypium hirsutum): 96%, 553%, and 760% increases in shoot height, weight, and flower production, and 385% in root growth over nonmycorrhizal controls. Tomato and Lotus japonicus trials report shoot growth promotion exceeding that of Rhizophagus irregularis inoculation, and maize mycorrhization is reported as consistent across geographic locations.
Peer-reviewed research cites Gigaspora margarita disease resistance induction against Fusarium in tomato and Lotus japonicus following AMF inoculation, alongside broader mycorrhizal stress tolerance. The fungus's strigolactone-triggered presymbiotic signaling — spore germination, hyphal branching, and chitin oligosaccharide production — is documented at the molecular level.
1AAPFCO-accepted claims
Listing details- Beneficial to plants and/or soils.
Accepted wording, shown verbatim · source: AAPFCO Plant Biostimulant list
2Potential claims from the literature
Reported to stimulate shoot growth (height, weight, and flower production) and root growth in cotton (Gossypium hirsutum) at low fertility levels, with increases of 96%, 553%, and 760% in shoot height, weight, and flower production, respectively, and 385% in root growth over nonmycorrhizal controls
Reported to promote shoot growth in tomato (Solanum lycopersicum) and Lotus japonicus when used as an AMF inoculant, with a greater growth promotion impact than Rhizophagus irregularis colonization
Reported to be associated with efficient promotion of growth and mycorrhization of maize independent of geographical location
Reported to induce resistance against Fusarium diseases in tomato and Lotus japonicus following AMF inoculation
Reported to form arbuscular mycorrhizal symbiosis with host plants, conferring agronomically beneficial traits including plant growth promotion and stress tolerance
Reported to respond to strigolactones with spore germination, hyphal branching, mitochondrial metabolism, transcriptional reprogramming, and production of chitin oligosaccharides that stimulate early symbiotic responses in the host plant
Reported to exhibit increased sporulation success, bioenergetic capacity (ATP production), and responsiveness to strigolactones when harboring its endobacterium Candidatus Glomeribacter gigasporarum, along with enhanced mechanisms to detoxify reactive oxygen species
Reported to improve alfalfa growth and/or root colonization when co-inoculated with certain spore-associated bacterial isolates (Curtobacterium, Ensifer, or Bacillus spp.)
Reported to have spore-associated bacteria that solubilize phosphorus, stimulate spore germination, and improve hyphal growth, potentially supporting the fungus's symbiotic capacity
Reported to support presymbiotic mycelial growth, branching, and auxiliary cell cluster formation in the presence of quercetin, a strigolactone analogue, and glucose, suggesting potential for improved large-scale production as a biofertilizer inoculant
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