Oxidative stress response to aluminum oxide (Al2O3) nanoparticles in Triticum aestivum

The Impact of Priming with Al2O3 Nanoparticles on Growth, Pigments, Osmolytes, and Antioxidant Enzymes of Egyptian Roselle (Hibiscus sabdariffa L.) Cultivar

“…However, plants primed with 0.01% Al 2 O 3 NPs, on the other hand, showed a marked increment in the levels of solutes, thereby aiding roselle plants to maintain the balance of water and minerals and, consequently, sustained growth. A dose-dependent increase in proline content in wheat plants has been noticed with the Al 2 O 3 NPs supply [56], which was in agreement with our presented results. Nevertheless, Al-mediated significant increase in proline and soluble contents has been reported also in Fagopyrum species [53], which further authenticated our results.…”

“…The activated antioxidants' activity, in turn, also lowered down MDA levels (Figure 5). A similar increase in antioxidant activities has been reported by Al 2 O 3 application in wheat plants [46,56]. On the other hand, the decrease in the activities of antioxidant enzymes by increasing levels of Al 2 O 3 NPs priming in the present study might be due to the low ROS biosynthesis coupled with increased ROS scavenging rate by other antioxidants (Figure 6), and the values were even below control plants.…”

“…Excess ROS due to Al stress inside plant tissues damages cellular structures concerned with photosynthesis [55], and thus significant decrease was observed in photosynthetic pigments (Figure 3A-C). A similar decrease in chlorophyll a, b and total carotenoids contents by 50 mg mL −1 Al 2 O 3 NPs has been reported in wheat [56]. In contrast, the dose of 0.01% Al 2 O 3 NPs increased photosynthetic pigment constituents.…”

Biosynthesized metal oxide nanoparticles for sustainable agriculture: next-generation nanotechnology for crop production, protection and management

“…The results showed that the concentration of H 2 O 2 amplified depending on NPs' dosage, thereby, SOD enzyme activity also increased. 86 Similarly, on exposure to Al 2 O 3 NPs, H 2 O 2 content in the roots of N. arvensis plant increased at concentrations of 50 and 100 mg L −1 , however decreased significantly at 1000 and 2500 mg L −1 concentrations of the NPs, yet again implying toxicity at higher concentrations by scavenging excessive amounts of ROS via antioxidant enzymes. 87…”

Grapefruit Extract-Mediated Fabrication of Photosensitive Aluminum Oxide Nanoparticle and Their Antioxidant and Anti-Inflammatory Potential

“…The newest nanomaterial to grab the attention of scientists is aluminum oxide (Al 2 O 3 ) nanoparticles, which have been used for numerous industrial and biological purposes due to their unique features, including large surface area, high mechanical strength, high hardness, good thermal and chemical stability, efficient interaction with metals, and enhanced catalytic activity [ 13 , 14 , 15 , 16 ]. Aluminum oxide (Al 2 O 3 ) nanoparticles have shown various biomedical applications, including antibacterial [ 17 ], antioxidant [ 18 ], anticancer, and antipathogenic properties; protein binding [ 19 ]; and wound healing [ 20 ].…”