Effects of Red Mud on Cadmium Uptake and Accumulation by Rice and Chemical Changes in Rhizospheres by Rhizobox Method
文献类型：期刊论文
| 作者 | Meng, Xiaofei1,2; Yang, Junxing1,2; Zheng, Guodi1,2; Xia, Tianxiang3 |
| 刊名 | MINERALS
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 12期号:8页码:15 |
| 关键词 | Oryza sativa soil pollution heavy metals potentially toxic elements plant-soil system |
| DOI | 10.3390/min12080929 |
| 通讯作者 | Yang, Junxing(yangajx@igsnrr.ac.cn) ; Xia, Tianxiang(xiatianxiang@cee.cn) |
| 英文摘要 | Red mud (RM), a byproduct of aluminum production, is used as amendments to increase the pH and reduce the available Cd in soil, but the effects of RM treatments on rice and rhizosphere chemistry changes at different radial-oxygen-loss (ROL) rates and developmental stages remain unclear. To address this concern, a rhizobox trial was conducted to investigate the effect of 0%, 0.5%, and 1.0% RM, on Cd accumulation by rice cultivars differing in ROL rate ('Zheyou12' (ZY12), 'Qianyou1' (QY1), and 'Chunjiangnuo2' (CJN2)) at two growth stages (tillering and bolting). The results showed that mobility factors of Cd in the soil were decreased significantly at both stages. The Cd mobility factor (MF) of CJN2 was decreased by 33.01% under 1% RM treatment at bolting stage. The pH value was increased by 0.39-0.53 units at two stages. RM contains large amounts of metals, which can increase soil iron (Fe) and manganese (Mn) concentrations, reduce redox potential, and transform the available Cd into Fe/Mn oxide-bound Cd. In addition, the Fe plaque further increased to inhibit the transformation of Cd. These changes reduced the available Cd in the soil and further decreased Cd absorption by rice. With the increase in RM concentration, the shoot and root biomass increased, and Cd accumulation in the plant significantly decreased. Compared with that under 0% RM treatment, the shoot Cd concentrations of ZY12, QY1, and CJN2 under 1% RM treatment at the bolting stage decreased by 27.59%, 36.00%, and 46.03%, respectively. The relative Cd accumulation ability of the three rice cultivars was CJN2 < QY1 < ZY12. The ROL promotes Fe plaque formation on the root surface. The Fe plaque is an obstacle or buffer between Cd and rice, which can immobilize Cd in Fe plaque and further reduce Cd absorption by rice. The addition of RM, in combination with a high-ROL rice cultivar, is a potential strategy for the safe production of rice on Cd-contaminated soils. |
| WOS关键词 | IRON PLAQUE-FORMATION ; RADIAL OXYGEN LOSS ; SOIL ; PH ; IDENTIFICATION ; ENHANCEMENT ; TOLERANCE ; FRACTION ; ROOTS ; ZN |
| 资助项目 | National Key R&D Program of China[2018YFC1802604] ; National Natural Science Foundation of China[41201312] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000845451200001 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/182427]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yang, Junxing; Xia, Tianxiang |
| 作者单位 | 1.Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Beijing Municipal Res Inst Ecoenvironm Protect, Beijing 100037, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Xiaofei,Yang, Junxing,Zheng, Guodi,et al. Effects of Red Mud on Cadmium Uptake and Accumulation by Rice and Chemical Changes in Rhizospheres by Rhizobox Method[J]. MINERALS,2022,12(8):15. |
| APA | Meng, Xiaofei,Yang, Junxing,Zheng, Guodi,&Xia, Tianxiang.(2022).Effects of Red Mud on Cadmium Uptake and Accumulation by Rice and Chemical Changes in Rhizospheres by Rhizobox Method.MINERALS,12(8),15. |
| MLA | Meng, Xiaofei,et al."Effects of Red Mud on Cadmium Uptake and Accumulation by Rice and Chemical Changes in Rhizospheres by Rhizobox Method".MINERALS 12.8(2022):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。