Liu Zhiguo, Qin Mengzhan, Li Runze, Peijnenburg Willie J G M, Yang Long, Liu Peng, Shi Qinghua
College of Plant Protection, Shandong Agricultural University, Taian 271000, China.
College of Horticulture Science and Engineering, Shandong Agricultural University, Taian 271018, China.
J Agric Food Chem. 2025 May 7;73(18):10923-10933. doi: 10.1021/acs.jafc.5c03590. Epub 2025 Apr 28.
Nanoplastics (NPs) have become a new environmental pollutant that causes serious harm to food safety. They can be absorbed by plants, transported to edible parts, transmitted to the human body along the food chain, and can threaten human health. The research investigated the transport and accumulation pathways of polystyrene NPs (PS-NPs) at varying concentrations using red fluorescence labeling. An analysis was conducted on the response of pakchoi to PS-NPs through a combination of transcriptional and physiological experiments. PS-NPs enter the xylem vessel of the root, subsequently carried to the petiole through transpirational tension, and eventually transported from the petiole's xylem vessels to the leaf. PS-NPs induced the accumulation of reactive oxygen species (ROS), which led to oxidative damage. In addition, it also disturbed the homeostasis of endogenous hormones and affected the growth of pakchoi. These findings help people understand the adverse effects of NPs on crops and increase attention to the hazards of NPs.
纳米塑料（NPs）已成为一种新的环境污染物，对食品安全造成严重危害。它们可被植物吸收，转运至可食用部位，沿食物链传递至人体，进而威胁人类健康。该研究利用红色荧光标记，探究了不同浓度聚苯乙烯纳米塑料（PS-NPs）的转运和积累途径。通过转录和生理实验相结合的方式，对小白菜对PS-NPs的反应进行了分析。PS-NPs进入根部的木质部导管，随后通过蒸腾拉力被输送到叶柄，最终从叶柄的木质部导管转运至叶片。PS-NPs诱导活性氧（ROS）积累，导致氧化损伤。此外，它还扰乱了内源激素的稳态，影响了小白菜的生长。这些发现有助于人们了解纳米塑料对作物的不利影响，并提高对纳米塑料危害的关注度。
