Examination of Antioxidative System's Responses in the Different Phases of Drought Stress and During Recovery in Desert Plant Reaumuria soongorica (Pall.) Maxim
文献类型：期刊论文
| 作者 | Bai, Juan1; Gong, Chun-Mei1; Chen, Kang3; Kang, Hong-Mei2; Wang, Gang2 |
| 刊名 | JOURNAL OF PLANT BIOLOGY
 |
| 出版日期 | 2009-10-01 |
| 卷号 | 52期号:5页码:417-425 |
| 关键词 | Antioxidant Enzymes Drought Stress Hydrogen Peroxide Reactive Oxygen Species Reaumuria Soongorica |
| ISSN号 | 1226-9239 |
| DOI | 10.1007/s12374-009-9053-7 |
| 文献子类 | Article |
| 英文摘要 | The aim of this study was to test the protective roles of superoxide dismutases (SODs), guaiacol peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) against oxidative damage and their activities in different phases of the dry down process in Reaumuria soongorica (Pall.) Maxim. leaves. Drought stress was imposed during 100 consecutive days and rewatering after 16, 72, and 100 days. The concentration of hydrogen peroxide (H(2)O(2)), malondialdehyde, and SODs activities were elevated significantly with progressing drought stress. POD and CAT activities increased markedly in the early phase of drought and decreased significantly with further drought stress continuation, and POD activity was unable to recover after rewatering. Ascorbate, reduced glutathione, APX, and GR activities declined in the initial stages of drought process, elevated significantly with further increasing water deficit progression and recovered after rewatering. These results indicate that: (1) iron SODs-removing superoxide anion is very effective during the whole drought stress; (2) CAT scavenges H(2)O(2) in the early phase of drought and enzymes of ascorbate-glutathione cycle scavenge H(2)O(2) in further increasing drought stress; and (3) POD does not contribute to protect against oxidative damage caused by H(2)O(2) under drought stress.; The aim of this study was to test the protective roles of superoxide dismutases (SODs), guaiacol peroxidase (POD), catalase (CAT), ascorbate peroxidase (APX), and glutathione reductase (GR) against oxidative damage and their activities in different phases of the dry down process in Reaumuria soongorica (Pall.) Maxim. leaves. Drought stress was imposed during 100 consecutive days and rewatering after 16, 72, and 100 days. The concentration of hydrogen peroxide (H2O2), malondialdehyde, and SODs activities were elevated significantly with progressing drought stress. POD and CAT activities increased markedly in the early phase of drought and decreased significantly with further drought stress continuation, and POD activity was unable to recover after rewatering. Ascorbate, reduced glutathione, APX, and GR activities declined in the initial stages of drought process, elevated significantly with further increasing water deficit progression and recovered after rewatering. These results indicate that: (1) iron SODs-removing superoxide anion is very effective during the whole drought stress; (2) CAT scavenges H2O2 in the early phase of drought and enzymes of ascorbate-glutathione cycle scavenge H2O2 in further increasing drought stress; and (3) POD does not contribute to protect against oxidative damage caused by H2O2 under drought stress. |
| 学科主题 | Plant Sciences |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000269956100007 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/2881]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 作者单位 | 1.NW A&F Univ, Coll Life Sci, Xian 712100, Peoples R China 2.Lanzhou Univ, Key Lab Arid & Grassland Ecol, Minist Educ, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Juan,Gong, Chun-Mei,Chen, Kang,et al. Examination of Antioxidative System's Responses in the Different Phases of Drought Stress and During Recovery in Desert Plant Reaumuria soongorica (Pall.) Maxim[J]. JOURNAL OF PLANT BIOLOGY,2009,52(5):417-425. |
| APA | Bai, Juan,Gong, Chun-Mei,Chen, Kang,Kang, Hong-Mei,&Wang, Gang.(2009).Examination of Antioxidative System's Responses in the Different Phases of Drought Stress and During Recovery in Desert Plant Reaumuria soongorica (Pall.) Maxim.JOURNAL OF PLANT BIOLOGY,52(5),417-425. |
| MLA | Bai, Juan,et al."Examination of Antioxidative System's Responses in the Different Phases of Drought Stress and During Recovery in Desert Plant Reaumuria soongorica (Pall.) Maxim".JOURNAL OF PLANT BIOLOGY 52.5(2009):417-425. |
入库方式： OAI收割
来源：海洋研究所
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