Effects of Nanomaterial GQDs on the Growth of Dunaliella viridis
作者单位：School of Life SciencesShanghai University
会议名称：《第七届长三角植物科学研讨会暨青年学术报告会》
会议日期：2018年
学科分类：09[农学] 0903[农学-农业资源与环境]
关 键 词：Sulfonated graphene quantum dots growth activity Dunaliella viridis
摘 要：Graphene quantum dots(GQDs) are widely used in the biological *** have demonstrated great potential for labeling cells,tracking particles and being used as biosensors because of their chemical stability,electronic properties,and *** research on the potential toxicity of GQDs is greatly required because of their inherent chemical composition and nanoscale *** this study,a wall-less green algae,Dunaliella viridis,was used as a model organism to evaluate the bio-safety of sulfonated *** GQDs were investigated in Dunaliella viridis at exposure concentrations ranging from 250-2000 mg/L for 96 *** cell division rate,chlorophyll biosynthesis,malondialdehyde(MDA) content and the activity of superoxide dismutase(SOD) were *** concentrations(250 mg/L,500 mg/L) of sulfonated GQDs could promote the growth of the algae while high concentrations(1500 mg/L,2000 mg/L) of sulfonated GQDs significantly inhibited the growth of Dunaliella *** total chlorophyll content in individual algal cell also showed the same *** chlorophyll content increased after exposure to sulfonated GQDs at concentrations of 250,500,and 750 mg/L and decreased relatively at higher ***’s more,each of the chlorophyll content was higher than that in the untreated *** the increase of the concentration of sulfonated GQDs,the content of MDA in the algae cells also *** the same time,the activity of SOD in cells was also induced to *** results indicated that the toxic effect of sulfonated GQDs on the growth of Dunaliella viridis may be due to oxidative stress caused by nanomaterials.