PDF(Pubmed)
Abstract：
With the pronounced increase in nanotechnology, it is likely that biological systems will be exposed to excess nanoparticles (NPs). Cerium oxide nanoparticles (CeO2 NPs) are among the most abundantly produced nanomaterials in the world. Their widespread use raises fundamental questions related to the accumulation in the environment and further interactions with living organisms, especially plants. NPs present in either soil or soilless environments are absorbed by the plant root systems and further transported to the aboveground parts. After entering the cytoplasm, NPs interact with chloroplast, nucleus, and other structures responsible for metabolic processes at the cellular level. In recent years, several studies have shown the impact of nanoceria on plant growth and metabolic processes. Research performed on different plants has shown a dual role for CeO2 NPs. The observed effects can be positive or negative and strongly depend on the plant species, characterization, and concentrations of NPs. This review describes the impact of root-applied CeO2 NPs on plant growth, photosynthesis, metal homeostasis, and parameters of induced oxidative stress.
摘要：
随着纳米技术的显著增加，生物系统很可能会暴露于过量的纳米颗粒（NPs）。氧化铈纳米颗粒（CeO2NP）是世界上生产最丰富的纳米材料之一。它们的广泛使用引发了与环境中的积累以及与生物体的进一步相互作用有关的基本问题，尤其是植物。存在于土壤或无土环境中的NP被植物根系吸收并进一步输送到地上部分。进入细胞质后,NPs与叶绿体相互作用，核，和其他负责细胞水平代谢过程的结构。近年来,一些研究表明纳米铈对植物生长和代谢过程的影响。对不同植物进行的研究显示了CeO2NP的双重作用。观察到的影响可以是积极的或消极的，并且强烈依赖于植物物种，表征，和NPs的浓度。这篇综述描述了根施CeO2NPs对植物生长的影响，光合作用,金属稳态，和诱导氧化应激的参数。
