Effects of Graphene Oxide on Atrazine Phytotoxicity Effects of Graphene Oxide on Photosynthetic Response of Iris Pseudacorus to Atrazine Stress and Accumulation of Atrazine in the Plant
文献类型： 外文期刊
作者： Peng, Lei 1 ; Xie, Dongyu 1 ; Li, Cui 2 ; Guo, Qiang 2 ; Chen, Chuansheng 1 ; Wang, Qinghai 2 ;
作者机构： 1.Cent South Univ Forestry & Technol, Coll Environm Sci & Engn, Changsha 410004, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China
关键词： Pesticide; Nanomaterials; Combined toxicity; Aquatic plant; Chlorophyll a fluorescence rise kinetics
期刊名称：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.807； 五年影响因子：2.616 ）
ISSN： 0007-4861
年卷期： 2022 年 108 卷 6 期
页码：
收录情况： SCI
摘要： To evaluate combined effects of co-existed pesticides and nanomaterials on aquatic plants, the toxicity of herbicide atrazine (ATZ) on Iris pseudacorus in the presence and absence of Graphene oxide (GO) was investigated using chlorophyll a fluorescence transients. Results showed that GO reduced ATZ accumulation in plant. ATZ or ATZ combined with GO mainly blocked electron transport beyond Q(A) at PSII as indicated by the sharp rise of the J-step level of fluorescence rise kinetics. The pronounced increase in Fm and the loss of I-step were observed when ATZ was at 2.0 mg center dot L- 1 implying the damage on the oxygen evolution complex and PSI. GO at environmentally relevant concentration did not exhibit significant photosynthetic inhibitory effects on I. pseudacorus. GO at 1.0 mg center dot L- 1 promoted photosynthesis of I. pseudacorus under ATZ stress at 2.0 mg center dot L- 1. These result indicated that the presence of GO alleviated the photosynthesis inhibition by ATZ at high levels.
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