Table 2.
Microbial species that improve Fe nutrition when applied to dicot plants grown in calcareous soils (or in artificial calcareous soils).
| Microbial species | Plant species | Mode appl. | Fe def. resp. | Fe Gr. | Refs |
|---|---|---|---|---|---|
| Rhizobacteria | |||||
| Bacillus subtilis | Manihot esculenta | ri | nd | Fe ∧ | Freitas et al., 2015 |
| Paenibacillus polymyxa | Arabidopsis thaliana | ri | nd | Fe | Zhou et al., 2016a |
| Bacillus sp. Agrobacterium sp.∗ Alcaligenes sp.∗ Pantoea sp.∗ | Pyrus communis | ri | FCR organic acids | Fe | Ipek et al., 2017 |
| Alcaligenes sp.∗ Pantoea sp.∗ | Malus domestica | i | FCR organic acids | Fe | Aras et al., 2018 |
| Bacillus sp. Agrobacterium sp.∗ Alcaligenes sp.∗ Staphylococcus sp.∗ | Prunus persica | ri | FCR organic acids | Fe | Arıkan et al., 2018 |
| Rhizofungi | |||||
| Trichoderma asperellum | Lupinus albus | gm and ri | nd | Fe | de Santiago et al., 2009 |
| Trichoderma asperellum | Cucumis sativus | ri | nd | Fe | de Santiago et al., 2013 |
Mode appl., mode of application of the microbes (gm, application to the growth medium; i, through the irrigation system; ri, root immersion). FCR, ferric chelate reductase activity; Fe Gr., increased shoot Fe concentration (Fe) and increased shoot growth (∧); nd, not determined; ∗, microbial species whose association with ISR is not yet clear.