What benefits of Oidiodendron maius have been cited in the scientific literature?
Inoculated Rhododendron fortunei and Rhododendron indica 'Formosa' are reported in published research to develop faster adventitious roots, larger canopies, and greater root biomass, alongside two- to ninefold upregulation of nitrogen uptake genes (nitrate transporters, ammonium transporters, glutamine synthetase) and upregulation of phosphorus uptake genes. In highbush blueberry (Vaccinium corymbosum) trials, O. maius is reported to significantly stimulate growth in single-inoculation experiments and improve plant biomass at semi-industrial scale in a multimicroorganismal inoculum.
Beyond ericoid hosts, the literature reports O. maius promotes Arabidopsis thaliana growth — a non-host — via CO2 emission and soluble diffusible molecules, and shows plant growth-promoting potential in Camellia oleifera rhizospheres. Mycorrhizal growth response across nine ericaceous species is reported to vary with plant and fungal identity and host phylogeny — a factor relevant to formulators evaluating host-range claims.
1AAPFCO-accepted claims
Listing details- Stimulates growth, vigor, as well as promoting the development of strong roots with a greater capacity to absorb water and nutrients.
Accepted wording, shown verbatim · source: AAPFCO Plant Biostimulant list
2Potential claims from the literature
Reported to promote adventitious root (AR) formation in microcuttings of Rhododendron fortunei, with ARs quickly forming after inoculation
Reported to produce tryptophan (Trp), indole-3-pyruvate (IPA), and indole-3-acetic acid (IAA) through a Trp-dependent pathway, suggesting a role in auxin biosynthesis
Reported to enhance plant growth (fresh and dry weight) of Rhododendron fortunei and Rhododendron indica 'Formosa' following inoculation, resulting in larger canopies and root systems
Reported to increase total nitrogen absorbed by inoculated Rhododendron fortunei plants compared to uninoculated controls, with upregulation of genes related to nitrogen uptake and metabolism (nitrate transporters, ammonium transporter, glutamine synthetase, glutamate synthase) by twofold to ninefold
Reported to upregulate genes involved in phosphorus uptake in inoculated Rhododendron fortunei microcuttings
Reported to colonize hair roots of Rhododendron fortunei, forming hyaline hyphae on root surfaces and hyphal coils inside root cortical cells, indicating effective mycorrhizal colonization
Reported to promote growth of the non-host plant Arabidopsis thaliana across multiple experimental setups, with fungal CO2 emission suggested as a contributing mechanism
Reported to induce a clumped root phenotype in Arabidopsis thaliana (shortening of primary root, increase in lateral root length and number) via soluble diffusible molecules in non-compartmented co-culture
Reported to significantly stimulate Vaccinium corymbosum (highbush blueberry) growth in single inoculation experiments, and to improve plant biomass and vitality at semi-industrial scale when included in a multimicroorganismal inoculum
Reported to have plant growth-promoting potential in the rhizosphere of disease-susceptible Camellia oleifera based on rhizosphere microbiome functional analysis
Reported to promote blueberry (Vaccinium uliginosum) seedling growth when co-inoculated with mycorrhizal helper bacteria, and to increase nitrate reductase, glutamate dehydrogenase, glutamine synthetase, and glutamate synthase activities in leaves, promoting nutrient uptake
Reported to exhibit variable mycorrhizal growth response (MGR) across nine ericaceous plant species, with MGR influenced by both plant and fungal identity as well as host plant phylogeny
See the full picture on Oidiodendron maius
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