Biofabricated silver nanoparticles improved biomass, physiological and biochemical indices of strawberry (Fragaria ananassa) under closed cultivation conditions

مقال فى مجلة

2024

Silver nanoparticles (AgNPs) have extensively been used in industrial and medical fields due to their chemical and physical features such as quantum scale effects, size, surface, and interface effects. In addition, AgNPs are being used in the agricultural sector to enhance plant growth and development. However, most previous reports have focused on AgNPs phytotoxicity rather than positive impact on plant growth and development. Therefore, this research is aimed to investigate the effect of biofabricated AgNPs on biomass, physiological and biochemical indices of strawberry under closed cultivation conditions. Thus, AgNPs were fabricated biologically using plant extract, while the synthesis AgNPs was confirmed using several appropriate techniques such as UV-visible spectrophotometer (UV), Zeta potential analysis, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), scanning electron microscope (SEM), and energy dispersive X-ray (EDX). Thereafter, different concentrations (0, 20,40 mg/L) of biofabricated AgNPs were supplemented to the nutrient medium of strawberry explants and incubated for 90 days. Next, biomass, physiological and biochemical indices were estimated. The obtained results revealed that AgNPs with an average size 100 nm, spherical shape and negative charge have an effective and tangible impact on the conditions. The addition of AgNPs to strawberry medium led to an increase in biomass, photosynthetic pigments, as well as total protein content and superoxidase dismutase (SOD) activity were upregulated. Total sugar content (TSC) and total phenolic content (TPC) were decreased under biofabricated AgNPs treatment compared to untreated explants. Moreover, the influence of biofabricated AgNPs on plant phytohormones such Indole-3-acetic acid (IAA) and Abscisic acid (ABA) were chromatographically investigated. The obtained results demonstrated that IAA content was increased behave to AgNPs, while ABA hormone decreased in treated plants comparing to the control. This study concluded that biofabricated AgNPs have played a vital role in the growth and development of strawberry as well as in combating the stress originating in closed cultivation rooms. (c) 2024 SAAB. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.