Environmental stresses and redox status of ascorbate
文献类型：期刊论文
| 作者 | Jin, YH; Tao, DL; Hao, ZQ; Ye, J; Du, YJ; Liu, HL; Zhou, YB; Tao, DL, Chinese Acad Sci, Inst APpl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China |
| 刊名 | ACTA BOTANICA SINICA
 |
| 出版日期 | 2003 |
| 卷号 | 45期号:7页码:795-801 |
| 关键词 | Freezing Drought Ascorbate Ascorbate-glutathione Pathway |
| ISSN号 | 0577-7496 |
| 英文摘要 | To investigate the effects of environmental stresses on ascorbic acid content and its redox status, the effects of freezing and drought on ascorbate and dehydro-ascorbate content and activities of four enzymes involved in the ascorbate-glutathione cycle in some conifers were studied. The results showed that both freezing and drought induced the decrease in ascorbate content and the increase in dehydro-ascorbate content. The activities of ascorbate peroxidase (APX) and monodehydro-ascorbate reductase (MDAR) were decreased by freezing stress. At the beginning of exposure to air, water loss from detached needles induced the increase in the activities of APX and MDAR. Further water loss turned to decrease the APX and MDAR activities. The activities of dehydro-ascorbate reductase (DHAR) and glutathione reductase (GR) were not sensitive to changes in temperature and water content of the needles. It is concluded that moderate temperature or water stresses may induce the acclimation and increase in the ability of the H2O2 scavenging system, while strong stresses decrease the ability and induce injury of plant tissues. Correlation between ascorbate content and activities of related enzymes and cold tolerance of conifers were also reported. |
| 学科主题 | Biochemistry & Molecular Biology ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000184301100007 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/55385]  |
| 专题 | 沈阳应用生态研究所_沈阳应用生态研究所 |
| 通讯作者 | Tao, DL, Chinese Acad Sci, Inst APpl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jin, YH,Tao, DL,Hao, ZQ,et al. Environmental stresses and redox status of ascorbate[J]. ACTA BOTANICA SINICA,2003,45(7):795-801. |
| APA | Jin, YH.,Tao, DL.,Hao, ZQ.,Ye, J.,Du, YJ.,...&Tao, DL, Chinese Acad Sci, Inst APpl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China.(2003).Environmental stresses and redox status of ascorbate.ACTA BOTANICA SINICA,45(7),795-801. |
| MLA | Jin, YH,et al."Environmental stresses and redox status of ascorbate".ACTA BOTANICA SINICA 45.7(2003):795-801. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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。