文献类型: 外文期刊
作者: Gao, Minling;Song, Zhengguo;Yang, Yujuan;Song, Zhengguo
作者机构:
关键词: Graphene oxide; Heavy metal; Cadmium; Combined pollution; Phytotoxicity
期刊名称: CHEMOSPHERE
ISSN: 0045-6535
年卷期: 2019 年 233 卷
页码:
摘要: The effects of cadmium (Cd) on wheat seedlings in the presence of graphene oxide (GO) were investigated. Parameters evaluated include root morphology, microtubule protein content, cytochrome P450 activity, and the microcellular structure of wheat seedlings. Compared with treatments with Cd or GO in isolation, treatments combining GO and Cd inhibited the total root length, total root surface area, average root diameter, and number of root hairs. GO combined with Cd also increased cytochrome P450 activity and reduced tubulin content. Cotransport of GO-loading Cd entered root tissues and was then transported to the mesophyll cells; this, in turn, triggered damage to cellular structures, including the cell membranes and chloroplast, leading to root blockage and reduced respiratory efficiency, decreased effectiveness of water and nutrient absorption, and ultimate inhibition of wheat growth and development. These effects of GO exposure were also concentration-dependent. The results indicated that GO amplified the phytotoxicity of Cd in wheat seedling roots. Given the worldwide exposure of the environment to Cd contamination, careful consideration should be given to the effects of GO in combination with Cd in agricultural management. (C) 2019 Elsevier Ltd. All rights reserved.
分类号:
- 相关文献
作者其他论文 更多>>
-
Characteristics of a Novel Decomposed Corn Straw-Sludge Biochar and Its Mechanism of Removing Cadmium from Water
作者:Chen, Qiaoting;Gao, Minling;Miao, Qiyu;Xiao, Ling;Li, Zhongyang;Qiu, Weiwen;Song, Zhengguo
关键词:
-
The influence of humic and fulvic acids on polytetrafluoroethylene-adsorbed arsenic: a mechanistic study
作者:Dong, Youming;Gao, Minling;Qiu, Weiwen;Song, Zhengguo
关键词:Polytetrafluoroethylene; HA; pi complex; Hydrogen bond; Water pollution
-
Enhanced As(Iii) Removal From Aqueous S.olution By Fe-Mn-La-Impregnated Biochar C omposites
作者:Qiu, Weiwen;Liu, Xuewei;Lin, Lina;Khan, Zulgarnain Haider;Song, Zhengguo
关键词:Fe-Mn-La-impregnated biochar composite (FMLBC); Arsenic (As); Adsorption; Mechanism
-
Adsorption Mechanism Of As(Iii) On P.olytetrafluoroethylene Particles Of Different S ize
作者:Dong, Youming;Song, Zhengguo;Qiu, Weiwen;Gao, Minling
关键词:Polytetrafluoroethylene; Adsorption; Hydrogen bond; Exothermic process
-
Effects Of Biodegradable Chelator Combination O.n Potentially Toxic Metals L eaching Efficiency In Agricultural Soils
作者:Khan, Zulqarnain Haider;Qiu, Weiwen;Song, Zhengguo;Wang, Kai;Liu, Yonghong;Wang, Kai
关键词:Soil washing; Degradable chelating agent; Agricultural soil; Morphological distribution; Soil enzyme
-
Capacity And Mechanism Of Arsenic A.dsorption On Red Soil S upplemented With Ferromanganese Oxide-Biochar Composites
作者:Zhou, Shiwei;Song, Zhengguo;Huang, Qing;Qiu, Weiwen;Huang, Yongchun;Lin, Lina
关键词:Ferromanganese oxide-biochar composite (FMBC); Arsenic; Red soil; Adsorption ability
-
Chloride ions promoted the catalytic wet peroxide oxidation of phenol over clay-based catalysts
作者:Zhou, Shiwei;Xu, Minggang;Zhang, Changbo;Song, Zhengguo;Xu, Rui;Gu, Chuantao
关键词:catalytic wet peroxide oxidation (CWPO);chloride-assistance;induction period;rate-limiting step;surface modification