The Contribution of Nano-Selenium in Alleviation of Salinity Adverse Effects on Coriander Plants

Abstract

Nanotechnology is the field of science that opens a large scope of novel application in various fields, especially agricultural biotechnology. Selenium (Se) is an essential trace element for humans and animals and appears to be a beneficial element for many plants. There is increasing evidence showing that low selenium (Se) concentrations may build resistance of plants to environmental stresses. For this purpose, a pot experiment was carried out at The Experimental Farm of the Faculty of Agriculture, Mansoura University, Dakahlia Governorate, Egypt, during the spring season of 2016, to investigate the potential alleviation of salinity adverse effects by Se application as a foliar spray in the form of selenium nanoparticles (Se-NPs) in two concentrations (0 and 50 ppm) on coriander (Coriandrum sativum) grown on a sandy soil irrigated with different concentrations of saline water S1 (EC w =3.12 dS m-1), S2 (EC w =6.25 dS m-1) and tap water as a control S0 (EC w =0.45 dSm-1). These experimental treatments were arranged in a split plot design in three replications. Salinity showed adverse effects on different plant growth parameters as well as total chlorophyll content. Selenium nanoparticles (Se-NP1) at 50 ppm showed the best effects on vegetative growth and total chlorophyll content of coriander plants under different salinity levels of irrigation water. Increasing salinity resulted in decreasing N and K contents in the leaves of coriander plants, but Na increased as a result of some sort of antagonism with K; in spite of that, N and K contents in coriander leaves increased with foliar application of selenium nanoparticles (Se-NP1) at rate of 50 ppm to be higher concentrations compared to distilled water added to the spray as a control 0 ppm (Se-NP0). Values of Na/K ratio in coriander leaves increased as the salinity levels increased while, K/Na ratio was decreased. On the contrary, the values of Na/K ratio decreased with (Se-NP1) spraying at rate of 50 ppm, but K/Na ratio was increased at the same spraying rate under all salinity levels. It is concluded that application of selenium nanoparticles can mitigate salt stress damages on coriander plants; it also leads to increasing in K concentrations and decreasing in Na concentrations under salt stress.

Comparative efficacy of bio-selenium nanoparticles and sodium selenite on morpho-physiochemical attributes under normal and salt stress conditions, besides selenium detoxification pathways in Brassica napus L.

“…BioSeNPs application increased K + level with reduction of Na + level under two concentrations of NaCl (150 and 200 mM) during the early seedling stage, which promotes the regulation of growth by inference to antioxidant metabolism and cellular stress signalling [ 86 ]. It could be concluded that the enhancement in rapeseed growth, total chlorophyll and mineral contents of seedlings exposed to salt conditions with bioSeNPs application may be due to reducing Na + content in leaves, consequently reducing Na + /K + ratio, osmotic adjustment, ionic balance and antioxidant enzyme activities [ 87 ]. NPs elevate the expression of Na + /H + antiport and tonoplast H + -ATPase at the root membranes and shorten the root apoplast barrier, thus limiting Na + translocation to shoot tissues and reducing Na + toxic effects [ 88 , 89 ], hence improving salt tolerance.…”

Greenhouse gas emissions, carbon stocks and wheat productivity following biochar, compost and vermicompost amendments: comparison of non-saline and salt-affected soils

“…Organic amendments significantly decreased EC and pH of salt-affected soils (Qadir et al 2022). The application of compost and biochar improved the physical conditions of the soil, which increased the leaching ability of soil and thus resulted in a considerable reduction in salts in the root zone 45 . Biochar is claimed to achieve several sustainability goals, including C sequestration, soil health, and plant growth improvements 18 , 46 .…”

Histopathological, Immunohistochemical, Biochemical, and In Silico Molecular Docking Study of Fungal-Mediated Selenium Oxide Nanoparticles on Biomphalaria alexandrina (Ehrenberg, 1831) Snails

“…Reports now concentrate on employing nanoparticles to avoid excessive dosages of selenium while maintaining biological benefits [ 39 ]. Nano-selenium (SeNPs) has many advantages, such as its small size and higher activity, in addition to the ability to use selenium in its zero oxidation state (Se 0 ) [ 40 ]. The aquatic invertebrates, such as gastropods, bivalves, and crustaceans are good model organisms for studying the nanomaterials toxicological effects [ 41 ].…”