Toxic effect of sodium perfluorononyloxy-benzenesulfonate on Pseudomonas stutzeri in aerobic denitrification,cell structure and gene expression
作者机构：Department of Environmental EngineeringCollege of Biology and the EnvironmentNanjing Forestry UniversityNanjing210037China
出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)
年 卷 期：2021年第15卷第5期
页 面：247-256页
核心收录：
学科分类：07[理学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学]
基 金：the Natural Science Foundation of Jiangsu Province(BK20201388) the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
主 题：Sodium perfluorononyloxy-benzenesulfonate Aerobic denitrification Pseudomonas stutzeri Ecotoxicity ROS
摘 要：The toxicities of sodium perfluorononyloxy-benzenesulfonate(OBS)to animals and plants are similar to those of perfluorooctane ***,the mechanism of its toxicity to aerobic denitrifying bacteria is still *** the present study,the ecotoxicity of OBS on an aerobic denitrifying strain,Pseudomonas stutzeri,was *** results showed that a dosage of OBS clearly affected the growth and aerobic denitrification of *** compared with an unamended control,the degradation efficiency of the total nitrogen decreased by 30.13%during exposure to 200 mg/L of OBS,and the complete degradation time of nitrate-nitrogen was delayed by 4 *** lactate dehydrogenase and superoxide dismutase produced by the bacteria increased with the concentration of OBS,and reactive oxygen species were also detected by confocal laser scanning microscope *** electron microscope imaging revealed chromosome deformation of the cells and damage to cell content;moreover,outer membrane vesicles were secreted from the bacteria,which was the important detoxification mechanism of *** to *** of the genes involved in aerobic nitrification and oxidative stress were also changed under OBS stress,which further confirmed the toxicity of OBS to P *** study reveals the environmental exposure risk of OBS from the perspective of microorganisms.
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