Subcellular Cd distribution and its correlation with antioxidant enzymatic activities in wheat (Triticum aestivum) roots
文献类型：期刊论文
| 作者 | Li Dandan1,2; Zhou Dongmei1; Wang Peng1,2; Weng Nanyan1,2; Zhu Xiangdong1,2 |
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2011-05-01 |
| 卷号 | 74期号:4页码:874-881 |
| 关键词 | Cadmium Subcellular distribution Antioxidant enzymatic activities Wheat |
| ISSN号 | 0147-6513 |
| DOI | 10.1016/j.ecoenv.2010.12.006 |
| 通讯作者 | Zhou Dongmei(dmzhou@issas.ac.cn) |
| 英文摘要 | The subcellular partitioning of Cd in wheat root was obtained by differential centrifugation of root homogenates to quantify the amounts of Cd associated with five operationally defined subcellular fractions, namely Cd-rich granule (MRG), cellular debris, organelles, heat-denatured protein (HDP), and heat-stable protein (HSP). Their correlations were investigated with the changes in antioxidant enzymatic activities under Cd stress (0.01-9.68 mu M) for 72 h. The results showed that the relative Cd distribution in detoxified fractions (MRG + HSP) was decreased with increasing [Cd], but in metal-sensitive fractions (HDP + organelles) was increased. Consequently, the content of superoxide dismutase (SOD) and catalase (CAT) was decreased. Additionally, an increase of the total antioxidant capacity (A-TOC) and a slight decrease of malondialdehyde (MDA) were also observed. Interestingly, the relative root elongation (RRL) and CAT were significantly correlated with the Cd-sensitive fractions. These results suggest that the Cd toxicity to wheat roots strongly depends on the subcellular Cd distribution. (C) 2010 Elsevier Inc. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | BIOTIC LIGAND MODEL ; CADMIUM TOXICITY ; METAL SEQUESTRATION ; LIPID-PEROXIDATION ; COPPER ; PLANTS ; PHYTOTOXICITY ; SEEDLINGS ; ENZYMES ; PHYTOPLANKTON |
| WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
| WOS类目 | Environmental Sciences ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:000290553400043 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559014 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhou Dongmei |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Dandan,Zhou Dongmei,Wang Peng,et al. Subcellular Cd distribution and its correlation with antioxidant enzymatic activities in wheat (Triticum aestivum) roots[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2011,74(4):874-881. |
| APA | Li Dandan,Zhou Dongmei,Wang Peng,Weng Nanyan,&Zhu Xiangdong.(2011).Subcellular Cd distribution and its correlation with antioxidant enzymatic activities in wheat (Triticum aestivum) roots.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,74(4),874-881. |
| MLA | Li Dandan,et al."Subcellular Cd distribution and its correlation with antioxidant enzymatic activities in wheat (Triticum aestivum) roots".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 74.4(2011):874-881. |
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来源：南京土壤研究所
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