Effect of root surface iron plaque on se translocation and uptake by Fe-deficient rice
文献类型：期刊论文
| 作者 | Zhou Xin-Bin; Shi Wei-Ming |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2007-10-01 |
| 卷号 | 17期号:5页码:580-587 |
| ISSN号 | 1002-0160 |
| 关键词 | iron plaque phytosiderophore rice selenium uptake and translocation |
| 通讯作者 | Shi Wei-Ming(wmshi@issas.ac.cn) |
| 英文摘要 | Under anaerobic conditions, ferric hydroxide deposits on the surface of rice roots and affects uptake and translocation of certain nutrients. In the present study, rice plants were cultured in Fe-deficient or sufficient solutions and placed in a medium containing selenium (Se) for 2 h. Then, FeSO4 was added at the various concentrations of 0, 10, 40, or 70 mg L-1 to induce varying levels of iron plaque on the root surfaces and subsequent uptake of Se was monitored. The uptake of Se was inhibited by the iron plaque, with the effect proportional to the amount of plaque induced. The activity of cysteine synthase was decreased with increasing amounts of iron plaque on the roots. This may be the important reason for iron plaque inhibition of Se translocation. At each level of iron plaque, Fe-deficient rice had more Se than Fe-sufficient rice. Furthermore, with plaque induced by 20 mg Fe L-1, plants from Fe-deficient media accumulated more Se than those from Fe-sufficient media, as the Se concentration was increased from 10 to 30 or 50 mg L-1. We found that phytosiderophores, highly effective iron chelating agents, could desorb selenite from ferrihydrite. Root exudates of the Fe-deficient rice, especially phytosiderophores in the exudates, could enhance Se uptake by rice plants with iron plaque. |
| 收录类别 | SCI |
| WOS关键词 | ORYZA-SATIVA L. ; HYDROUS FERRIC-OXIDE ; SOLUTION CULTURE ; NUTRIENT-UPTAKE ; SELENIUM ; ACCUMULATION ; SEEDLINGS ; SORPTION ; VOLATILIZATION ; DIFFERENCE |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| 出版者 | SCIENCE CHINA PRESS |
| WOS记录号 | WOS:000249943600004 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558641 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Shi Wei-Ming |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.SW Univ, Coll Res & Environm, Chongqing 400716, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou Xin-Bin,Shi Wei-Ming. Effect of root surface iron plaque on se translocation and uptake by Fe-deficient rice[J]. PEDOSPHERE,2007,17(5):580-587. |
| APA | Zhou Xin-Bin,&Shi Wei-Ming.(2007).Effect of root surface iron plaque on se translocation and uptake by Fe-deficient rice.PEDOSPHERE,17(5),580-587. |
| MLA | Zhou Xin-Bin,et al."Effect of root surface iron plaque on se translocation and uptake by Fe-deficient rice".PEDOSPHERE 17.5(2007):580-587. |
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来源：南京土壤研究所
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