Arsenate causes differential acute toxicity to two P-deprived genotypes of rice seedlings (Oryza sativa L.)
文献类型：期刊论文
| 作者 | Hu, Y; Zhu, YG; Geng, CN; Meharg, AA; Williams, P |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2006 |
| 卷号 | 279期号:2015-01-02页码:297-306 |
| 关键词 | Acute Toxicity Antioxidants Arsenic Rice Stress Level |
| 英文摘要 | Significant genotypic difference in response to arsenate toxicity in rice (Oryza sativa) was investigated in root elongation, arsenate uptake kinetics, physiological and biochemical response and arsenic (As) speciation. Uptake kinetics data showed that P-deprived genotype 94D-54 had a little higher As uptake than P-deprived 94D-64, but the difference was not large enough to cause acute toxicity in P-deprived 94D-54. There was no difference in tissue P concentrations between the two genotypes under P deficient conditions. In addition, arsenic speciation in plant tissues (using high performance liquid chromatography-inductively coupled plasma mass spectrometry) was not different between P pretreatments and between genotypes. P-deprived genotype 94D-54 suffered much higher stress induced by arsenate toxicity than P-deprived genotype 94D-64, in terms of lipid peroxidation, tissue H2O2 concentrations and exosmosis of K, P and As. However, P-deprived 94D-54 also had higher overproduction of enzymatic antioxidants (with higher GPX, SOD, CAT) and NPT (non-protein thiols) than P-deprived 94D-64. It appeared that, the higher sensitivity of P-deprived 94D-54 to arsenate toxicity might cause the overproduction of NPT, thus leading to the depletion of GSH and to the accumulation of H2O2. The differential sensitivity of the two genotypes has major implications for breeding rice for As affected paddy soil. |
| WOS记录号 | WOS:000235340600027 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23050]  |
| 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 | Hu, Y,Zhu, YG,Geng, CN,et al. Arsenate causes differential acute toxicity to two P-deprived genotypes of rice seedlings (Oryza sativa L.)[J]. PLANT AND SOIL,2006,279(2015-01-02):297-306. |
| APA | Hu, Y,Zhu, YG,Geng, CN,Meharg, AA,&Williams, P.(2006).Arsenate causes differential acute toxicity to two P-deprived genotypes of rice seedlings (Oryza sativa L.).PLANT AND SOIL,279(2015-01-02),297-306. |
| MLA | Hu, Y,et al."Arsenate causes differential acute toxicity to two P-deprived genotypes of rice seedlings (Oryza sativa L.)".PLANT AND SOIL 279.2015-01-02(2006):297-306. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。