纳米聚对苯二甲酸乙二醇酯对水稻幼苗光合作用系统和金属组稳态平衡的影响  

Effects of Nano-poly(Ethylene Terephthalate)on Photosynthesis System and Metal Homeostasis Equilibrium of Rice Seedlings

作　　者：解宏鑫 费钰茜 曹浩楠 陈瑞 崔丽巍 陈栋梁 于永亮[1] 李柏[2] 李玉锋[2,6] XIE Hongxin;FEI Yuqian;CAO Haonan;CHEN Rui;CUI Liwei;CHEN Dongliang;YU Yongliang;LI Bai;LI Yu-Feng(Department of Chemistry,College of Sciences,Northeastern University,Shenyang,Liaoning 110819,China;CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety,&CAS-HKU Joint Laboratory of Metallomics on Health and Environment,&Beijing Metallomics Facility,&National Consortium for Excellence in Metallomics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;College of International Education,Henan Agricultural University,Zhengzhou,Henan 450002,China;School of Mechanical Engineering,Jinan University,Jinan,Shandong 250024,China;Beijing Key Laboratory of Occupational Safety and Health,Institute of Urban Safety and Environmental Science,Beijing Academy of Science and Technology,Beijing 100054,China;University of Chinese Academy of Sciences,Beijing 100049,China;Beijing Synchrotron Radiation Facility,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]东北大学理学院化学系,沈阳110819 [2]中国科学院高能物理研究所,中国科学院纳米生物效应与安全性重点实验室,暨中国科学院-香港大学金属组学与健康和环境联合实验室,暨全国金属组学创新研究中心,北京100049 [3]河南农业大学国际教育学院,郑州450002 [4]济南大学机械工程学院,济南250024 [5]北京市科学技术研究院城市安全与环境科学研究所,职业安全与健康北京市重点实验室,北京100054 [6]中国科学院大学,北京100049 [7]中国科学院高能物理研究所,北京同步辐射装置,北京100049

出　　处：《中国无机分析化学》2024年第8期1058-1065,共8页Chinese Journal of Inorganic Analytical Chemistry

基　　金：国家自然科学基金资助项目(11975247);中国科学院大学生创新实践训练计划项目(IHEP202305)。

摘　　要：纳米塑料(NPs)是全球关注的新兴污染物,然而有关它们对陆生植物毒性的知识仍然有限。比较了不同浓度的纳米聚对苯二甲酸乙二酯(nPET)对水稻幼苗的影响。与对照组相比,低浓度(10 mg/L)的nPET明显抑制幼苗的生长,叶绿素含量明显下降,水稻根中的MDA含量和SOD活性都明显增加,GPx活性变化主要反映在水稻茎部和叶片,表明nPET会干扰水稻光合作用系统,并引发氧化应激。此外,nPET还改变水稻幼苗中钙(Ca)、锰(Mn)、铁(Fe)、镍(Ni)和锌(Zn)的含量,表明暴露于nPET会影响植物体内的金属组稳态平衡。总之,nPET会影响水稻苗的光合作用,造成氧化损伤,并干扰体内金属组的稳态平衡,从而影响水稻的生长发育。Nanoplastics(NPs)are emerging pollutants of global concern.However,knowledge on their toxicity to terrestrial plants is still limited.In this study,we compared the toxicity of different concentrations of nano polyethylene terephthalate(nPET)on rice plants.Compared with the control,low concentration(10 mg/L)of nPET significantly inhibited the seedling growth,chlorophyll content markly decreased,MDA content and SOD activity in rice roots increased significantly,and changes in GPx activity were mainly reflected in rice stems and leaves.The above results indicated that nPET interfered with the photosynthesis system and caused cellular damage and oxidative stress.In addition,nPET affected calcium(Ca),manganese(Mn),iron(Fe),nickel(Ni),and zinc(Zn)contents in rice seedlings,suggesting that exposure to nPET affected metal homeostasis in plants.In conclusion,nPET affects photosynthesis,induces oxidative stress,and perturbs the problematic balance of metal homeostasis in the body,thereby affects the growth and development of rice seedlings.

关 键 词：聚对苯二甲酸乙二醇酯 纳米塑料 微塑料 水稻 同步辐射X射线荧光光谱 

分 类 号：O657.34[理学—分析化学]