Sulfate application decreases translocation of arsenic and cadmium within wheat (Triticum aestivum L.) plant
文献类型： 外文期刊
作者： Shi, Gaoling 1 ; Lu, Haiying 3 ; Liu, Huan 4 ; Lou, Laiqing 4 ; Zhang, Pingping 1 ; Song, Guicheng 1 ; Zhou, Huimin 1 ; M 1 ;
作者机构： 1.Jiangsu Acad Agr Sci, Prov Key Lab Agrobiol, Nanjing 210014, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Food Crops, Nanjing 210014, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China
4.Nanjing Agr Univ, Coll Life Sci, Nanjing 210095, Peoples R China
5.Jiangsu Univ, Sch Environm & Safety Engn, Zhenjiang 212013, Jiangsu, Peoples R China
关键词： Arsenic; Cadmium; Sulfate; Wheat; Phosphorus
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）
ISSN： 0048-9697
年卷期： 2020 年 713 卷
页码：
收录情况： SCI
摘要： Arsenic (As) and cadmium (Cd) typically exhibit divergent fates in soil, which complicates efforts to decrease As and Cd accumulation in the edible parts of crops. Here, we performed pot experiments to examine the effect of sulfate application on As and Cd accumulation in the grain of wheat grown in contaminated soil. Compared to the control (no sodium sulfate addition), application of 120 mg kg(-1) sodium sulfate decreased the rhizosphere soil pH from 7.27 to 7.10 and increased the soil extractable Cd concentration; however, it did not significantly influence the soil extractable As concentration. However, sodium sulfate addition decreased As and Cd concentrations in wheat grain, in association with decreased As and Cd translocation from root and straw to grain, rather than from soil to root. Furthermore, sodium sulfate addition significantly decreased membrane lipid peroxidation and enhanced photosynthesis, while increasing the uptake of nitrogen, phosphorus, and sulfur. These effects increased the growth and grain weight of plants grown in As and Cd co-contaminated soil. Our findings provide insight into the mechanisms by which sulfate modulates As and Cd uptake and translocation in wheat; moreover, our findings will enable formulation of strategies to decrease As and Cd concentrations in the grain of wheat grown in As and Cd co-contaminated soil. (C) 2020 Elsevier B.V. All rights reserved.
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