| Antioxidant responses and salt stress tolerance of Aloe vera irrigated by seawater with different salinity |
| |
| 作者姓名： | 金赞敏 Liu Zhaopu Wang Changhai Gong Weijia |
| |
| 作者单位： | [1]Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian 116024, P.R. China [2]College of Resource and Environment, Nanjing Agricultural University, Nanjing 210095, P.R. China |
| |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| |
| 摘 要： | The variations of antioxidant enzyme activities including superoxide dismutase （SOD： EC 1.15.1.1）, peroxidase （POD： EC 1.11.1.7） and catalase （CAT： EC 1.11.1.6）, lipid peroxidation and major electrolytes in Aloe vera irrigated for three years with seawater having different salinity were studied. The results indicate that POD activity increased significantly at 10% seawater level, whereas decreased at higher seawater levels. The SOD activity decreased with increasing seawater concentration except for treatment with 100% seawater （denoted as T100%） under long-term salt stress. Salinity decreased CAT activity,and increased lipid peroxidation and cell membrane injury. In addition, Ca^2＋ content was high in Aloe irrigated by seawater of low salinity level, but low in Aloe irrigated by seawater of high salinity level. An opposite trend was observed for the effect of seawater on Na^＋ content of plants. K^＋ and Mg^2＋ contents remain relatively stable under various seawater levels, which benefit plant growth.
|
| 关 键 词： | 芦荟 抗氧剂 细胞膜稳定性 无机阳离子 盐应激 |
| 修稿时间： | 2006-03-17 |
Antioxidant responses and salt stress tolerance of Aloe vera irrigated by seawater with different salinity |
| |
| Jin Zanmin,Liu Zhaopu,Wang Changhai,Gong Weijia.Antioxidant responses and salt stress tolerance of Aloe vera irrigated by seawater with different salinity[J].High Technology Letters,2007,13(3):332-336. |
| |
| Authors: | Jin Zanmin Liu Zhaopu Wang Changhai Gong Weijia |
| |
| Institution: | 1. Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian 116024, P.R. China
2. College of Resource and Environment, Nanjing Agricultural University, Nanjing 210095, P.R.China |
| |
| Abstract: | The variations of antioxidant enzyme activities including superoxide dismutase (SOD: EC 1.15.1.1), peroxidase (POD: EC 1.11.1.7) and catalase (CAT: EC 1.11.1.6), lipid peroxidation and major electrolytes in Aloe vera irrigated for three years with seawater having different salinity were studied. The results indicate that POD activity increased significantly at 10% seawater level, whereas decreased at higher seawater levels. The SOD activity decreased with increasing seawater concentration except for treatment with 100% seawater (denoted as T100% ) under long-term salt stress. Salinity decreased CATactivity,and increased lipid peroxidation and cell membrane injury. In addition, Ca2 content was high in Aloe irrigated by seawater of low salinity level, but low in Aloe irrigated by seawater of high salinity level. An opposite trend was observed for the effect of seawater on Na content of plants. K and Mg2 contents remain relatively stable under various seawater levels, which benefit plant growth. |
| |
| Keywords: | Aloe vera antioxidant enzymes cell membrane stability inorganic cations malondialdehyde salt stress |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
