Related Experiment Video
Updated: Mar 27, 2026

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging
Published on: February 15, 2021
Iron-Based Nanomaterials Enhance Rice Growth and Limit Grain Arsenic Accumulation via Iron Plaque Formation and
Mengshan Tang1, Zhiyuan Lv2, Jiayi Wang1
1College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China.
Abstract:
Through 40-day short-term pot experiments and 128-day complete life-cycle pot experiments, this study systematically evaluated the effects of three iron-based nanoparticles (NPs)─nZVI, Fe2O3 NPs, and Fe3O4 NPs─and two ionic iron (Fe) fertilizers (FeCl3 and FeSO4) on rice growth and arsenic (As) accumulation. We further examined the formation, structural characteristics, and physicochemical properties of root-associated Fe plaque, along with As dynamics in the rhizosphere. All Fe amendments increased rice grain yield. Compared with the control, Fe treatments reduced grain As concentrations by 19.8-44.8% while increasing Fe contents by 16.9-52.7%, with nZVI exhibiting the strongest As mitigation effect. Multiscale analyses revealed that Fe NPs altered the pore structure and Fe speciation of Fe plaque, increased the proportion of crystalline iron oxides, and enhanced the spatial colocalization of As and Fe within the Fe plaque. nZVI notably enhanced the As immobilization capacity of Fe plaque. Concurrently, Fe NPs facilitated the transformation of labile As into more stable forms in rhizosphere soils and increased the abundance of functional genes involved in As oxidation, detoxification, and Fe redox. Overall, Fe NPs represent a promising strategy for reducing As exposure risks in As-contaminated paddy soils.
More Related Videos
08:21Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.
Published on: September 1, 2017
07:43Production of Arbuscular Mycorrhizal (AM) Fungal Inoculum and Phenotypic Evaluation of Rice and AM Symbiosis Under Saline Conditions
Published on: March 14, 2025
Related Concept Videos
Microbial Corrosion
Microbes and Other Elemental Cycles
Microbial Bioremediation of Uranium
Plant Breeding and Biotechnology
Key Elements for Plant Nutrition