Table 3.
Applications of EPS-producing salt-tolerant bacteria.
| Microorganisms | Crops | PGP trait | References |
|---|---|---|---|
|
Halmonas variabilis HT1 Planococcus refietoensis RT4 |
Cicera rietinum | Increase in fresh weight, dry weight, total soluble sugars and protein contents Increase soil aggregation and biofilm formation | [82] |
| Rhizobium meliloti | Tomato | EPS with high succinoglycan and galactoglucon | [67] |
| Bacillus sp., (B. licheniformis, B. pumilus, B. coagulans, and B. insolitus) Paenibacillus sp., (P. macerans) Microbacterium sp. Burkholderia cepacia Enterobacter sp. | Wheat | Rhizospheric soil aggregation Decrease Na+ uptake and root biofilm formation | [12] |
| Pseudomonas anguilliseptica SAW 24 | Faba bean | Enhance plant height and fresh/dry weight | [81] |
| Rhizobium and Pseudomonas | Zea Mays | Increase proline production Decrease electrolyte leakage along with maintenance of leaf relative water content and uptake of K+ | [106] |
| Bacillus isolates and Mesorhizobium | Cicer arietinum L. (Chickpea) | Reduce concentration of Na+ in soil | [104] |
| Azotobacter chroococcum | Vicia faba L. | Enhanced N, P, and K concentrations, the proline content, RWC%, and the K+/Na+ ratio | [99] |
| Aeromonas spp. SAL-17 and SAL-21 | Wheat | Increase in leaf proline content, nitrate reductase activity, chlorophyll a/b, stomatal conductance, transpiration rate, root length, and shoot length | [108] |
| Aeromonas hydrophila/caviae MAS765, Bacillus insolitus MAS17, and Bacillus sp. MAS617, MAS620, and MAS820 | Wheat | Restricted passive flow of Na+ from the roots to stele in wheat crop and large root surface covered with soil | [107] |
| Marinobacter lipolyticus SM19 and B. subtilis subsp. inaquosorum | Wheat | Shoot and root dry weight Restricted Na+ uptake | [94] [83] |
| Pseudomonas aeruginosa PF07 | Hellianthus annuus | Enhance Root Adhering Soil to Root Tissue ratio (RAS/RT)) and texture of the soil Increase porosity Improve uptake of nutrients | [84] |
| Enterobacter sp. MN17 and Bacillus sp. MN54 | Quinoa (Chenopodium quinoa) | Improved plant-water relations | [105] |
| Rhodopseudomonas palustris TN114 and PP803 | - | Chelate Na +cations from aqueous environment | [100] |