Root porosity, radial oxygen loss and iron plaque on roots of wetland plants in relation to zinc tolerance and accumulation
文献类型：SCI/SSCI论文
| 作者 | Yang J. X. ; Tam N. F. Y. ; Ye Z. H. |
| 发表日期 | 2014 |
| 关键词 | Aerenchyma Heavy metal Iron plaque Radial oxygen loss (ROL) Wetland plant Rhizosphere oryza-sativa l. trin ex steudel constructed wetlands rhizosphere soils cadmium tolerance arsenic tolerance typha-latifolia rice lead metal |
| 英文摘要 | Wetland plants have been widely used in constructed wetlands for the clean-up of metal-contaminated waters. This study investigated the relationship between rate of radial oxygen loss (ROL), root porosity, Zn uptake and tolerance, Fe plaque formation in wetland plants. A hydroponic experiment and a pot trial with Zn-contaminated soil were conducted to apply different Zn level treatments to various emergent wetland plants. Significant differences were found between plants in their root porosities, rates of ROL, Zn uptake and Zn tolerance indices in the hydroponic experiment, and concentrations of Fe and Mn on roots and in the rhizosphere in the pot trial. There were significant positive correlations between root porosities, ROL rates, Zn tolerance, Zn, Fe and Mn concentrations on roots and in the rhizosphere. Wetland plants with higher root porosities and ROL tended to have more Fe plaque, higher Zn concentrations on roots and in their rhizospheres, and were more tolerant of Zn toxicity. Our results suggest that ROL and root porosity play very important roles in Fe plaque formation, Zn uptake and tolerance, and are useful criteria for selecting wetland plants for the phytoremediation of Zn-contaminated waters and soils/sediments. |
| 出处 | Plant and Soil |
| 卷 | 374 |
| 期 | 1-2 |
| 页 | 815-828 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0032-079X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29463]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Yang J. X.,Tam N. F. Y.,Ye Z. H.. Root porosity, radial oxygen loss and iron plaque on roots of wetland plants in relation to zinc tolerance and accumulation. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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