Department of Botany, Division of Science and Technology, University of Education, Lahore, Pakistan.
Department of Chemistry, Division of Science and Technology, University of Education, Lahore, Pakistan.
Sci Rep. 2024 Nov 4;14(1):26687. doi: 10.1038/s41598-024-77221-z.
The effects of foliar application of sodium nitroprusside (SNP), magnesium sulfate (MgSO) and magnesium oxide nanoparticles (MgO-NPs) on the growth, physiology, and gas exchange parameters of two varieties of spinach (Spinacia oleracea L.) under cadmium (Cd) stress were examined. The experiment was arranged in a completely randomized design with 72 pots. Two varieties of S. oleracea (Desi Palak & Lahori Palak) were used. Two concentrations of Cd (0 µM and 150 µM) in the form of cadmium chloride (CdCl) were used. Two levels of SNP (0 ppm and 100 ppm) and two levels for each form of Mg i.e. MgSO and MgO-NPs (0 and 200 ppm) were foliar sprayed on plants in control and Cd stress. Both varieties behaved similarly under Cd stress and caused reductions in growth, physiology, gas exchange, water content parameters and inorganic ion uptake. However, the biochemical parameters like relative membrane permeability (RMP), malondialdehyde (MDA), and hydrogen peroxide (HO) contents were increased. However, all foliar spray treatments increased growth, physiological and gas exchange parameters, water content and inorganic ion uptake. However, this reduced the MDA, RMP, and HO contents. Desi Palak showed the more positive results under foliar application of MgO-NPs. However, Lahori palak showed more positive results under the SNP + MgO-NP treatment. It is concluded that foliar application of SNP, MgSO and MgO-NPs could be an innovative approach to alleviated the heavy metals (Cd) toxicity in crop plants.
叶面喷施硝普钠(SNP)、硫酸镁(MgSO)和氧化镁纳米粒子(MgO-NPs)对两种菠菜(Spinacia oleracea L.)在镉(Cd)胁迫下的生长、生理和气体交换参数的影响进行了研究。该实验采用完全随机设计,共 72 个盆。使用了两种 S. oleracea(Desi Palak 和 Lahori Palak)品种。使用两种浓度的 Cd(以氯化镉(CdCl)的形式存在)0 µM 和 150 µM。在对照和 Cd 胁迫下,叶面喷施 SNP(0 ppm 和 100 ppm)和每种形式的 Mg(即 MgSO 和 MgO-NPs)的两个水平(0 和 200 ppm)。两种品种在 Cd 胁迫下表现相似,导致生长、生理、气体交换、水分含量参数和无机离子吸收减少。然而,生化参数如相对膜通透性(RMP)、丙二醛(MDA)和过氧化氢(HO)含量增加。然而,所有叶面喷施处理都增加了生长、生理和气体交换参数、水分含量和无机离子吸收。然而,这降低了 MDA、RMP 和 HO 的含量。叶面喷施 MgO-NPs 使 Desi Palak 表现出更积极的结果。然而,Lahori palak 在 SNP+MgO-NP 处理下表现出更积极的结果。结论是,叶面喷施 SNP、MgSO 和 MgO-NPs 可能是一种减轻作物中重金属(Cd)毒性的创新方法。