广东工业大学学报2025，Vol.42Issue(5)：21-30,10.DOI:10.12052/gdutxb.250048
聚苯乙烯纳米颗粒和纳米硅对杜氏盐藻生理生化特性影响
Effects of Polystyrene Nanoplastics and Elemental Silicon Nanoparticles on the Physiological and Biochemical Characteristics of Dunaliella salina
摘要
Abstract
This study focuses on the effects of engineered nanomaterials(ENMs)on marine ecosystems,specifically examining the impact of common and elemental ENMs with beneficial properties on primary marine producers,such as green microalgae cells.Dunaliella salina was selected as the experimental organism to investigate the influences of polystyrene nanoplastics(PS NPs)and elemental silicon nanoparticles(Si NPs).The ENMs were introduced to the algal cultures during their logarithmic growth phase.Initially,both materials promoted cell growth,with intracellular photosynthetic pigment content increasing by 1.6%to 13.3%and betaine content rising by 2.7%to 45.23%.However,in the later stages of exposure,algal cells exhibited increased antioxidant enzyme activity,leading to oxidative stress responses and morphological fragmentation observed under transmission electron microscopy(TEM).In the transcriptome analysis,the upregulation of photosynthesis-related genes further demonstrated the enhancement of cellular photosynthetic capacity.In this study,while ENMs can initially enhance cell growth and improve photosynthetic performance,changes in the cellular environment can trigger oxidative stress responses that may ultimately harm the cells.These findings hold significant implications for the effective application of ENMs in marine algal cell research.关键词
杜氏盐藻/聚苯乙烯纳米塑料/纳米硅/光合作用/分子响应Key words
Dunaliella salina/polystyrene nanoplastics/elemental silicon nanoparticles/photosynthesis/molecular response分类
资源环境引用本文复制引用
张耕铭,蔡泽宇,梁安琪,李春阳,郝毅,许鑫鑫,马传鑫..聚苯乙烯纳米颗粒和纳米硅对杜氏盐藻生理生化特性影响[J].广东工业大学学报,2025,42(5):21-30,10.基金项目
国家自然科学基金资助项目(42177191) （42177191）
