Plant growth-promoting bacteria improve leaf antioxidant metabolism of drought-stressed Neotropical trees

Phosphate-Solubilizing Enterobacter ludwigii AFFR02 and Bacillus megaterium Mj1212 Rescues Alfalfa’s Growth under Post-Drought Stress

“…This higher accumulation of total phenolic content is essential for maintaining the osmotic potential of plants, increasing physiological activities during drought stress [92]. Our results agree with the report of [92][93][94], who noted that PGPR induction increases phenolic content in wheat and pulse crops. Similarly, Singh et al [95] and Asghari et al [96] reported higher antioxidants, such as DPPH in inoculated rice and pennyroyal plants.…”

“…Similarly, Singh et al [95] and Asghari et al [96] reported higher antioxidants, such as DPPH in inoculated rice and pennyroyal plants. Alternatively, other antioxidants' total flavonoids play a vital role by eliminating singlet oxygen and alleviating stress [93]. In bacterial-inoculated post-drought-stressed alfalfa plants, higher TFC content was observed (Figure 5D).…”

Salt Solution Treatments Trigger Antioxidant Defense Response against Gray Mold Disease in Table Grapes

“…The methodology of Giannopolitis and Ries [ 21 ] with minor modifications according to Tiepo et al [ 22 ] was followed to determine SOD activity. The reaction mixture was prepared with phosphate buffer (50 mM, pH 7.8), methionine (13 mM), EDTA (0.1 mM), nitro blue tetrazolium (NBT, 75 µM), and riboflavin (2 µM), and 40 μL of enzymatic extract was added to obtain 2 mL of final volume.…”

“…APX activity was determined following the methods of Nakano and Asada [ 23 ], with minor modifications according to Tiepo et al [ 22 ]. A total volume of 3 mL as the reaction mixture contained phosphate buffer (50 mM, pH 7.0), EDTA (0.1 mM), ascorbate (0.5 mM), H 2 O 2 (30 mM) and 30 µL of enzyme extract.…”

Enhancing Application Efficiency of Pseudomonas SPP. and Serratia marcescens Isolates against Meloidogyne incognita in Tomato Plants.

“…Beside, prescience PGPB in plant tissues promotes plant growth by secretion of hormones and enzymes or facilitating the nutrient uptake (Aquino et al, 2019). Also, enhancing the antioxidant response of crops (Tiepo et al, 2020). The direct effect of some microbial bioagent by secretions of egg hatching inhibitors and decline or directly killing infective juveniles (Siddiqui and Mahmood, 1999).…”