Radial oxygen loss has different effects on the accumulation of total mercury and methylmercury in rice
文献类型：期刊论文
| 作者 | Wang, Xun ; Li, Bing ; Tam, Nora Fung-Yee ; Huang, Lu ; Qi, Xiaoli ; Wang, Hongbin ; Ye, Zhihong ; Meng, Mei ; Shi, Jianbo |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2014 |
| 卷号 | 385期号:1页码:343-355 |
| 关键词 | Dynamic changes Iron plaque Mercury Methylmercury Oryza sativa L Radial oxygen loss (ROL) |
| ISSN号 | 0032-079X |
| 中文摘要 | Background and Aims Mercury (Hg) pollution in paddy fields and rice has aroused great concern in recent years. This study investigated the dynamic changes of radial oxygen loss (ROL) and Fe plaque formation on roots, and their effects on Hg accumulation in rice plants. Methods A rhizobag experiment was conducted to study temporal variations and correlations between ROL (amounts and rates), Fe plaque formation, total Hg (THg) and methylmercury (MeHg) in plant tissues and in plaque of four rice cultivars during six growth stages. Results ROL amounts and Fe plaque formation increased from tillering to reproductive stages, then ROL amounts gradually decreased until maturation stage, whereas Fe plaque remained relatively stable. ROL rates continued to decline during the entire growth period. Both ROL amounts and Fe concentrations in plaque were positively correlated with THg concentrations in the plaque, whereas negatively correlated with THg in straw and brown rice. However, there were no significant relationships between ROL, Fe in plaque and MeHg in plaque and in plant tissues. Conclusions ROL has great effects on THg but not MeHg accumulation in rice plants. Rice cultivars with higher ROLs tend to have a greater ability to reduce THg accumulation in brown rice. |
| WOS记录号 | WOS:000345283400025 |
| 公开日期 | 2015-03-24 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9437]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Xun,Li, Bing,Tam, Nora Fung-Yee,et al. Radial oxygen loss has different effects on the accumulation of total mercury and methylmercury in rice[J]. PLANT AND SOIL,2014,385(1):343-355. |
| APA | Wang, Xun.,Li, Bing.,Tam, Nora Fung-Yee.,Huang, Lu.,Qi, Xiaoli.,...&Shi, Jianbo.(2014).Radial oxygen loss has different effects on the accumulation of total mercury and methylmercury in rice.PLANT AND SOIL,385(1),343-355. |
| MLA | Wang, Xun,et al."Radial oxygen loss has different effects on the accumulation of total mercury and methylmercury in rice".PLANT AND SOIL 385.1(2014):343-355. |
入库方式： OAI收割
来源：生态环境研究中心
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