Abstract
Salinity is major abiotic stress affecting crop yield, productivity and reduces the land-usage area for agricultural practices. The purpose of this study is to analyze the effect of green-synthesized silver nanoparticle (AgNP) on physiological traits of wheat (Triticum aestivum) under salinity stress. Using augmented and high-throughput characterization of synthesized AgNPs, this study investigated the proximity of AgNPs-induced coping effects under stressful cues by measuring the germination efficiency, oxidative-biomarkers, enzymatic and non-enzymatic antioxidants, proline and nitrogen metabolism, stomatal dynamics, and ABA content. Taken together, the study shows a promising approach in salt tolerance and suggests that mechanisms of inducing the salt tolerance depend on proline metabolism, ions accumulation, and defense mechanisms. This study ascertains the queries regarding the correlation between nanoparticles use and traditional agriculture methodology; also significantly facilitates to reach the goal of sustainable developments for increasing crop productivity via much safer and greener approachability.
Highlights
Climate change and rapid increase in population are pragmatically making a serious threat to the world’s agronomic food security [1]
The leaf surface was thoroughly washed with the distilled water to remove the debris and other contaminated organic elements, and the samples were air-dried at room temperature
This study emphasizes the prodigious interlinking between sustainable agricultural practices and nanosciences where green synthesized analyze the effect of green-synthesized silver nanoparticle (AgNP) from wheat remarkably aided in ameliorating the adverse effects of salinity stress on various plant responses
Summary
Climate change and rapid increase in population are pragmatically making a serious threat to the world’s agronomic food security [1]. Accretion of ROS results in oxidative-burst in cellular compartments and affecting their components such as proteins, DNA, and lipids [5].the higher accumulation of sodium (Na+) and chloride (Cl−) ions in plants cause ionic stress and lead to disturbance in uptake, distribution, availability of essential elements, and impairment in selectivity and integrity of cellular membranes [6]. The tolerance mechanism of salinity-stressed plants manifests traits such as the exclusion of excessive salt ions, changes in membrane-permeability to regulate the ionic uptake, synthesis and accumulation of compatible metabolites or osmolytes such as proline, promoting ionic homeostasis, and hormonal regulation including abscisic acid (ABA) governs salt tolerance in plants [7,8]. The accumulation of ABA during water-deficit conditions initiates a cascade pathway, leading to active efflux of calcium ions (Ca2+), and NO3− ions out-flow; which in turn induces potassium ions (K+) efflux action and eventually results in stomatal closure, and thereby, conserving the cellular-water [10]
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