**5. Conclusion**

The biofertilizers decreased the salt's detrimental effects and increased the lettuce weight. Compared to salty conditions, microalgae + salt, mycorrhiza + salt, and bacteria + salt applications increased lettuce weight by 19.2, 21.3, and 20.08%, respectively. Biofertilizers increased pH, EC, total soluble solids, titratable acid, and total dry matter in lettuce leaves under salt stress. Biofertilizers had a stress-reducing effect under salinity and increased leaf osmotic potential, leaf water relative content, and leaf stomatal conductance. Microalgae *Chlorella vulgaris*, mycorrhiza, and

beneficial bacteria are recommended as stress relievers when growing lettuce in saline agricultural soils or with saline irrigation water.
