Do radial oxygen loss and external aeration affect iron plaque formation and arsenic accumulation and speciation in rice?
文献类型：期刊论文
| 作者 | Wu, Chuan ; Ye, Zhihong ; Li, Hui ; Wu, Shengchun ; Deng, Dan ; Zhu, Yongguan ; Wong, Minghung |
| 刊名 | JOURNAL OF EXPERIMENTAL BOTANY
 |
| 出版日期 | 2012 |
| 卷号 | 63期号:8页码:2961－2970 |
| 关键词 | arsenic (As) arsenate arsenite iron plaque radial oxygen loss rice spatial pattern of ROL |
| ISSN号 | 0022-0957 |
| 中文摘要 | Hydroponic experiments were conducted to investigate the effect of radial oxygen loss (ROL) and external aeration on iron (Fe) plaque formation, and arsenic (As) accumulation and speciation in rice (Oryza sativa L.). The data showed that there were significant correlations between ROL and Fe concentrations in Fe plaque produced on different genotypes of rice. There were also significant differences in the amounts of Fe plaque formed between different genotypes in different positions of roots and under different aeration conditions (aerated, normal, and stagnant treatments). In aerated treatments, rice tended to have a higher Fe plaque formation than in a stagnant solution, with the greatest formation at the root tip decreasing with increasing distances away, in accordance with a trend of spatial ROL. Genotypes with higher rates of ROL induced higher degrees of Fe plaque formation. Plaques sequestered As on rice roots, with arsenate almost double that with arsenite, leading to decreased As accumulation in both roots and shoots. The major As species detected in roots and shoots was arsenite, ranging from 34 to 78% of the total As in the different treatments and genotypes. These results contribute to our understanding of genotypic differences in As uptake by rice and the mechanisms causing rice genotypes with higher ROL to show lower overall As accumulation. |
| WOS记录号 | WOS:000304196900010 |
| 公开日期 | 2014-11-05 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7925]  |
| 专题 | 生态环境研究中心_土壤环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Wu, Chuan,Ye, Zhihong,Li, Hui,et al. Do radial oxygen loss and external aeration affect iron plaque formation and arsenic accumulation and speciation in rice?[J]. JOURNAL OF EXPERIMENTAL BOTANY,2012,63(8):2961－2970. |
| APA | Wu, Chuan.,Ye, Zhihong.,Li, Hui.,Wu, Shengchun.,Deng, Dan.,...&Wong, Minghung.(2012).Do radial oxygen loss and external aeration affect iron plaque formation and arsenic accumulation and speciation in rice?.JOURNAL OF EXPERIMENTAL BOTANY,63(8),2961－2970. |
| MLA | Wu, Chuan,et al."Do radial oxygen loss and external aeration affect iron plaque formation and arsenic accumulation and speciation in rice?".JOURNAL OF EXPERIMENTAL BOTANY 63.8(2012):2961－2970. |
入库方式： OAI收割
来源：生态环境研究中心
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