Impact of engineered nanomaterials on rice (Oryza sativa L.): A critical review of current knowledge

• Published in: Environmental pollution (1987) Vol. 297; p. 118738
• Main Authors: Wang, Yi, Dimkpa, Christian, Deng, Chaoyi, Elmer, Wade H., Gardea-Torresdey, Jorge, White, Jason C.
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 15.03.2022
• Subjects: Agriculture; Crops, Agricultural; Ecosystem; Engineered nanomaterials; Mechanisms; Nanostructures - toxicity; Oryza; Rice; ROS; Toxicity; Uptake; Mechanisms; Toxicity; Uptake; ROS; Rice; Engineered nanomaterials
• ISSN: 0269-7491; 1873-6424
• DOI: 10.1016/j.envpol.2021.118738

After use, a large number of engineered materials (ENMs) are directly or indirectly released into the environment. This may threaten the agricultural ecosystem, especially with crops under high demand for irrigation water, such as rice (Oryza sativa L.), a crop that feeds nearly half of the world's population. However, consistent and detailed information on the effects of nanoparticles in rice is limited. This review is a systematic exploration of the effects of ENMs on rice, with a critical evaluation of the mechanisms reported in the literature by which different nanomaterials cause toxicity in rice. The physiological and biochemical effects engendered by the nanoparticles are highlighted, focusing on rice growth and development, ENMs uptake and translocation, gene expression changes, enzyme activity modifications, and secondary metabolite alterations. •Soil studies at full-life cycle level or of growth stage dependent effect are limited.•Rice plant responses largely depend on ENPs chemical composition, size, and dose.•Changes in cell morphology, phytohormone, and gene expression were discussed.•ENMs uptake and transformation, and toxicity mechanism as ROS stress were reviewed.•Future perspectives are given including variety-dependent effects at molecular levels.