Abstract
BackgroundUsing of nanoparticles in various aspects of life including agriculture, medicine and industry is very crucial. One of the important source for Fe nutrition in plants is Iron oxide nanoparticles (Fe3O4NPs) due to its efficiency in releasing under different pH range. Thus, in the Model Farm of National Research Centre Egypt at El Tour South Sinai, a field experiment was carried out, to study the effect of different concentration of Fe3O4NPs (0, 20, 40, 60 ppm) on the physiological parameters and the nutritive value of Moringa under saline condition.ResultsThe obtained results indicate that foliar spraying of Fe3O4NPs significantly promote growth (plant height, branches leaves number per plant, leaf area, stem diameter and biomass). Foliar treatment also increased photosynthetic pigments (chlo.a, chlo b, chlo a/b and carotenoids) and indole acetic acid (IAA) contents comparing with control. Hydrogen peroxide and lipid peroxidation contents of Moringa oleifera leaves were decreased significantly as compared with control plant. The maximum activities of antioxidant enzymes Peroxidase (POX), poly phenol oxidase (PPO), super oxide dismutase (SOD) and nitrate reductase (NR) were observed in plants treated with 40 ppm. Different concentrations of Fe3O4NPs increased significantly crude protein, crude fiber and ash percentages as well as, some nutrient contents of moringa leaves (N, P, K and K/Na) compared with untreated control plants, meanwhile decreased Na contents.ConclusionTreatment of Moringa oleifera plant with Fe3O4NPs at different concentrations greatly decrease the harmful effect of salinity on growth by its promotive role on different studied biochemical and physiological aspects.
Highlights
Using of nanoparticles in various aspects of life including agriculture, medicine and industry is very crucial
The highest increase in plant height obtained with 60 ppm Fe3O4 NPs, while the least plant height recorded in control plant (0 Fe3O4)
Increasing concentration of F e3O4 NPs up to 60 ppm caused progressive reduction in these growth parameters compared with Fe3O4 NPs at 40 ppm except plant height
Summary
Using of nanoparticles in various aspects of life including agriculture, medicine and industry is very crucial. Moringaa oleifera is referred to "miracle vegetable" It is a perennial herb and it is a common ingredient in functional foods and pharmaceuticals. It is used as a nutritional additive because of its high contents of essential amino acid, some vitamins such as vitamin A, B, C and E, various minerals, some bioactive secondary metabolites such flavonoids, Salinity remains the biggest negative environmental challenge, because elevated levels of sodium chloride are commonly found in many farm zones. The great restriction facing agriculture in arid and semiarid zones due to increased salt levels both in soil and irrigation water, which hinder growth and productivity of various crops.
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