Hasan Murtaza, Tariq Tuba, Mustafa Ghazala, Ismail Emad A A, Awwad Fuad A, Hatami Mehrnaz
Department of Biotechnology, Faculty of Chemical and Biological Sciences The Islamia University of Bahawalpur Bahawalpur Pakistan.
Department of Plant Sciences, Faculty of Biological Sciences Quaid-i-Azam University Islamabad Pakistan.
Food Sci Nutr. 2024 Aug 18;12(10):7954-7967. doi: 10.1002/fsn3.4261. eCollection 2024 Oct.
Zinc oxide nanoparticles (ZnO NPs) can possibly serve as a pervasive source of essential nutrient zinc in agricultural crops in the future. The major environmental concerns with ZnO NPs might be their toxicity and incorrect dosage, which might lead to crop damage and environmental pollution. Interplay between ZnO NPs and () will be of interest, yet little is known about apropos interaction of these two, which will assist in optimizing the dose of ZnO NPs for their commercial use in agriculture. The current study aimed to investigate the growth, anatomical, and antioxidative responses of against ZnO NPs and zinc acetate. ZnO NPs were foliar sprayed with concentrations of 0, 25, 50, and 100 ppm. ZnO NPs remarkably promoted growth, leaf water content, and biomass accumulation; however, they declined root growth. The foliar spray of ZnO NPs improved the thickness of the stem hypodermis, cortex, pericycle, and phloem, while decreasing the stem diameter, thickness of the epidermis, and number of vascular bundles. ZnO NPs rigorously declined the cell area of xylem but slightly improved it in phloem. Unlike stem cells' anatomical responses to ZnO NPs, the root cells behaved otherwise. Overall, the antioxidative activity of considerably improved at 25 ppm concentration and decreased at 100 ppm. Generally, low and medium concentrations of ZnO NPs promoted plant morphological, anatomical, and antioxidant traits, while higher doses inhibited the same traits. Contrary to this, Zn acetate displayed severe toxic effects on almost all studied anatomical traits.
氧化锌纳米颗粒（ZnO NPs）未来有可能成为农作物中必需营养元素锌的广泛来源。与ZnO NPs相关的主要环境问题可能是其毒性和剂量不当，这可能导致作物受损和环境污染。ZnO NPs与（）之间的相互作用将备受关注，但对于这两者之间的相关相互作用却知之甚少，而这将有助于优化ZnO NPs在农业商业应用中的剂量。当前的研究旨在探究（）对ZnO NPs和醋酸锌的生长、解剖学及抗氧化反应。以0、25、50和100 ppm的浓度对（）进行叶面喷施ZnO NPs。ZnO NPs显著促进了（）的生长、叶片含水量和生物量积累；然而，它们却抑制了根系生长。叶面喷施ZnO NPs增加了茎皮下组织、皮层、中柱鞘和韧皮部的厚度，同时减小了茎直径、表皮厚度和维管束数量。ZnO NPs显著减小了木质部的细胞面积，但在韧皮部略有增加。与茎细胞对ZnO NPs的解剖学反应不同，根细胞的表现则相反。总体而言，（）的抗氧化活性在25 ppm浓度时显著提高，在100 ppm时降低。一般来说，低浓度和中等浓度的ZnO NPs促进了植物的形态、解剖学和抗氧化特性，而高剂量则抑制了这些特性。与此相反，醋酸锌对几乎所有研究的解剖学特性都表现出严重的毒性作用。
