Thiosulfate amendment reduces mercury accumulation in rice (Oryza sativa L.)
文献类型：期刊论文
| 作者 | Zhao, JJ ; Yu, YT; Li, HL; Li, YY; Hu, C; Li, H; Wang, G; Li, YF; Gao, YX; Zhao JT(赵甲亭)
|
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2018 |
| 卷号 | 430期号:43102页码:413-422 |
| 关键词 | Thiosulfate Mercury speciation Paddy soil Iron plaque Anoxic condition |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-018-3726-2 |
| 文献子类 | Article |
| 英文摘要 | Thiosulfate addition increases the solubility of mercury (Hg) in soil and Hg uptake by plants under oxic conditions. However, anoxic conditions could dominate the biogeochemical processes of Hg cycling during rice cultivation. The present study aimed to determine whether thiosulfate, a sulfur-containing fertilizer, could be used for Hg immobilization in paddy soil. A pot experiment was conducted using soil newly spiked with Hg and different doses of thiosulfate. Total Hg concentrations in rice tissues, Hg speciation in roots, and geochemical fraction of Hg in soils were investigated. Hydroponic cultivation was conducted to determine the subcellular distribution of Hg in root tissues. Thiosulfate application significantly reduced Hg concentration in rice plants. It increased the percentage of organic-bound Hg, but decreased the percentage of iron/manganese oxide-bound Hg. Thiosulfate enhanced iron plaque formation and Hg adsorption on the iron plaque. Its application increased the percentage of Hg forms similar to HgS and decreased those similar to Hg-glutathione [Hg(GS)(2)]. Thiosulfate amendments had a remarkable inhibitory effect on Hg accumulation in rice plants in newly Hg-spiked soil. This occurred because thiosulfate reduced Hg mobility in the rhizosphere and root tissues, promoted the formation of iron plaque, and facilitated more Hg adsorption by the iron plaque. Our findings suggest that appropriate thiosulfate treatment could be used as Hg-immobilizing agents in paddy soil. |
| 电子版国际标准刊号 | 1573-5036 |
| WOS关键词 | IRON PLAQUE ; CONTAMINATED SOILS ; INORGANIC MERCURY ; MINING AREAS ; METHYLMERCURY ; SULFUR ; PLANTS ; SPECIATION ; SEEDLINGS ; EXPOSURE |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000441308000029 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286204]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_实验物理中心 高能物理研究所_核技术应用研究中心 中国科学院高能物理研究所_中国散裂中子源 |
| 通讯作者 | Gao YX(高愈希) |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhao, JJ,Yu, YT,Li, HL,et al. Thiosulfate amendment reduces mercury accumulation in rice (Oryza sativa L.)[J]. PLANT AND SOIL,2018,430(43102):413-422. |
| APA | Zhao, JJ.,Yu, YT.,Li, HL.,Li, YY.,Hu, C.,...&Wang, Y.(2018).Thiosulfate amendment reduces mercury accumulation in rice (Oryza sativa L.).PLANT AND SOIL,430(43102),413-422. |
| MLA | Zhao, JJ,et al."Thiosulfate amendment reduces mercury accumulation in rice (Oryza sativa L.)".PLANT AND SOIL 430.43102(2018):413-422. |
入库方式： OAI收割
来源：高能物理研究所
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