Effects of plant growth promoting microorganisms inoculums on mineral nutrition, growth and productivity of rice (Oryza sativaL.)

Changes in Photo-Protective Energy Dissipation of Photosystem II in Response to Beneficial Bacteria Consortium in Durum Wheat under Drought and Salinity Stresses

“…Moreover, the consortium of our native PGPB, isolated from a durum wheat field, significantly improved some quenching parameters, especially PQ, as compared to the half and full doses of chemical fertilizer. Similar results reported that the inoculation of beneficial bacteria can induce systemic tolerance against salinity and drought stresses [38] and improve the efficiency of chemical fertilizer [36,37], which consequently resulted in reducing the amount of the chemical fertilizer consumption [39], upon some subsequent direct and indirect mechanisms such as bio-availability of soil nutrients [40,41], production of IAA [13], regulation of the expression of specific genes [42], and of carbohydrate metabolism [35], and synthesis of 1-aminocyclopropane-1-carboxylate (ACC) deaminase [43].…”

“…Furthermore, the effect of PGPB inoculums and chemical fertilizers on the increment of the plant height was almost significant as compared to the non-fertilized control plants. This difference between drought and salinity is a morphological adaptation mechanism and an indication of the photosynthetic source-sink balance in plants under various conditions, showing that the photosynthesis assimilation can contribute to growing plant organs by the elongation of the stem (plant height) under salinity and to growing roots, under drought, rather than sink organs such as grain [36][37][38]. Drought stress effects induced a biomass allocation into the root organ at the expense of the aerial parts, which can contribute to further absorb water from the soil.…”

“…In the present research, chlorophyll pigments (Chla + b) in plants treated by PGPB inoculations and chemical fertilizer were significantly higher than control plants. It has been previously reported that the optimal N, P, and K supply is considered essential for the biosynthesis of photosynthetic pigments, especially under stress conditions [36,37]. The tendency of the plants to maintain or increase the amount of chlorophyll content under stress conditions is a defense mechanism to conserve the photosynthesis system [29].…”

Photosynthetic responses of durum wheat to chemical/microbiological fertilization management under salt and drought stresses

“…In fact, bacterial inoculation was able to compete with half and full doses of CF. As already reported, the application of PGPB inoculation can reduce the consumption of chemicals (Yaghoubi Khanghahi et al 2018c) and augment their efficiency (Yaghoubi Khanghahi et al 2019b;Bakhshandeh et al 2020) to achieve sustainable crops' productivity (Meena et al 2017). Furthermore, the combination of efficient PGPB can induce systemic tolerance against drought and salinity via several direct and indirect mechanisms (Vandana et al 2020).…”

Efficiency of the Hydroponic System as an Approach to Confirm the Solubilization of CaHPO4 by Microbial Strains Using Glycine max as a Model

“…The Hydroponic System Proved the Positive Effect of Microbial Inoculation on P Absorption and Photosynthetic Performance in G. max Plants grown without the inoculation of microorganisms presented tissue P contents compatible with those observed in plants grown in P-free solution, which negatively affected pigment synthesis, photosynthetic performance (Pi_Abs), and pigment development in RVE. Rhizobacteria or growthpromoting fungi can induce metabolic processes that improve photosynthetic and developmental yields (e.g., De Andrade et al, 2019;Bakhshandeh et al, 2020;Kartik et al, 2020;Moretti et al, 2020;Jabborova et al, 2021). Some studies have shown that inoculation can be important under stressful conditions to improve the resilience, development, and productivity of different plant species (Bruno et al, 2020;Forouzi et al, 2020;Prittesh et al, 2020;e.g., Batool et al, 2020).…”