The concentration of selenium matters: a field study on mercury accumulation in rice by selenite treatment in qingzhen, Guizhou, China
文献类型：期刊论文
| ; | |
| 作者 | Li YF(李玉锋) ; Zhao JT(赵甲亭); Li YY(李云云); Li HJ(李汉军); Li B(李柏); Gao YX(高愈希); Li, YF; Zhao, JT; Li, YY; Li, HJ
|
| 刊名 | PLANT AND SOIL
 ; PLANT AND SOIL
|
| 出版日期 | 2015 ; 2015 |
| 卷号 | 391期号:1-2页码:195-205 |
| 关键词 | Rice Mercury Selenium XRF XAS Seed setting rate Thousand seed weight Rice Mercury Selenium XRF XAS Seed setting rate Thousand seed weight |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-015-2418-4 |
| 通讯作者 | 李玉锋 ; 李玉锋 |
| 文献子类 | Article |
| 英文摘要 | Aims The consumption of rice grain produced in mercury (Hg) contaminated soil was identified as a major route of dietary Hg exposure. The aims were 1) to determine the most suitable concentration of Se that can lead to least Hg accumulation in rice grain in real Hg contaminated paddy field in Qingzhen, and 2) to elucidate the possible mechanism of the protection against the phytotoxicity of Hg in rice by Se. Methods Rice plants were treated with different concentrations (0, 0.01, 0.1, 0.5, 1 and 5 mu g/mL) of sodium selenite in a real paddy field in Qingzhen, Guizhou, China. The concentrations of Hg and Se in soil, stream water, rice tissues, and the seed setting rate (SSR) and thousand seed weight (TSW) were checked. The distribution and chemical forms of Hg and Se in rice root were studied by XRF and XAS. Results Treating the rice plants with 0.5 mu g/mL of sodium selenite achieved the lowest Hg accumulation in rice grain while the highest SSR and TSW. In rice root, XRF found decreased Hg uptake, and XAS found Hg-Se complexes were formed. These findings, together with the formation of biological barriers like iron plaque, could explain the decreased accumulation of Hg in rice grain at Se levels below 0.5 mu g/mL. Se concentrations over 0.5 mu g/mL led to increased Hg accumulation and decreased SSR and TSW, which were ascribed to the significantly increased Se accumulation in rice grain. Conclusions This field study suggest that treatment with appropriate level of Se (0.5 mu g/mL in this study) is an efficient way to reduce Hg accumulation in rice and increase rice yield and quality, thereafter to protect the health of the rice-dependent populations in Hg-contaminated area.; Aims The consumption of rice grain produced in mercury (Hg) contaminated soil was identified as a major route of dietary Hg exposure. The aims were 1) to determine the most suitable concentration of Se that can lead to least Hg accumulation in rice grain in real Hg contaminated paddy field in Qingzhen, and 2) to elucidate the possible mechanism of the protection against the phytotoxicity of Hg in rice by Se. Methods Rice plants were treated with different concentrations (0, 0.01, 0.1, 0.5, 1 and 5 mu g/mL) of sodium selenite in a real paddy field in Qingzhen, Guizhou, China. The concentrations of Hg and Se in soil, stream water, rice tissues, and the seed setting rate (SSR) and thousand seed weight (TSW) were checked. The distribution and chemical forms of Hg and Se in rice root were studied by XRF and XAS. Results Treating the rice plants with 0.5 mu g/mL of sodium selenite achieved the lowest Hg accumulation in rice grain while the highest SSR and TSW. In rice root, XRF found decreased Hg uptake, and XAS found Hg-Se complexes were formed. These findings, together with the formation of biological barriers like iron plaque, could explain the decreased accumulation of Hg in rice grain at Se levels below 0.5 mu g/mL. Se concentrations over 0.5 mu g/mL led to increased Hg accumulation and decreased SSR and TSW, which were ascribed to the significantly increased Se accumulation in rice grain. Conclusions This field study suggest that treatment with appropriate level of Se (0.5 mu g/mL in this study) is an efficient way to reduce Hg accumulation in rice and increase rice yield and quality, thereafter to protect the health of the rice-dependent populations in Hg-contaminated area. |
| 学科主题 | Agriculture; Plant Sciences ; Agriculture; Plant Sciences |
| 类目[WOS] | Agronomy ; Plant Sciences ; Soil Science |
| 收录类别 | SCI ; CA |
| 电子版国际标准刊号 | 1573-5036 |
| WOS研究方向 | Agronomy ; Plant Sciences ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000354197100014 ; WOS:000354197100014 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228516]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Li YF,Zhao JT,Li YY,et al. The concentration of selenium matters: a field study on mercury accumulation in rice by selenite treatment in qingzhen, Guizhou, China, The concentration of selenium matters: a field study on mercury accumulation in rice by selenite treatment in qingzhen, Guizhou, China[J]. PLANT AND SOIL, PLANT AND SOIL,2015, 2015,391, 391(1-2):195-205, 195-205. |
| APA | 李玉锋.,赵甲亭.,李云云.,李汉军.,李柏.,...&Li, J.(2015).The concentration of selenium matters: a field study on mercury accumulation in rice by selenite treatment in qingzhen, Guizhou, China.PLANT AND SOIL,391(1-2),195-205. |
| MLA | 李玉锋,et al."The concentration of selenium matters: a field study on mercury accumulation in rice by selenite treatment in qingzhen, Guizhou, China".PLANT AND SOIL 391.1-2(2015):195-205. |
入库方式： OAI收割
来源：高能物理研究所
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。