Antioxidative system's responses in the leaves of six Caragana species during drought stress and recovery
文献类型：期刊论文
| 作者 | Kang, Hong-Mei1,2; Chen, Kang3; Bai, Juan4; Wang, Gang1 |
| 刊名 | ACTA PHYSIOLOGIAE PLANTARUM
 |
| 出版日期 | 2012-11-01 |
| 卷号 | 34期号:6页码:2145-2154 |
| 关键词 | Antioxidative enzymes Antioxidative metabolites Caragana species Drought stress Reactivated oxygen species |
| ISSN号 | 0137-5881 |
| 通讯作者 | Wang, G (reprint author), Lanzhou Univ, Minist Educ, Key Lab Arid & Grassland Agroecol, Lanzhou 730000, Peoples R China. |
| 英文摘要 | For investigating the protective roles of antioxidative system in desiccation tolerance of Caragana species as they adapt to arid environments, we monitored a variety of ecophysiological parameters in the leaves of Caragana arborescens (mesophyte), C. microphylla (semiarid species), C. roborovskyi, C. stenophylla, C. acanthophylla, and C. tragacanthoides (xerophyte) grown under a drying-rehydration cycle. Relative leaf water content and chlorophyll content were decreased by 17.4-39.2 %, and by 14-40 %, respectively, after exposure to 48 days of drought stress. Malondialdehyde did not increase in xeric Caragana species. Hydrogen peroxide concentrations increased by 13.1-43.9 % except in C. acanthophylla. The activities of superoxide dismutase (SOD), guaiacol peroxidase (POD), ascorbate peroxidase (APX), glutathione reductase (GR) and reduced glutathione (GSH) in xeric Caragana species were significantly elevated with progressing drought stress. However, catalase in all species decreased markedly before drought stress treatment reached 40 days. The xeric Caragana species showed higher SOD, POD, APX, and GR activities, as well as ascorbate content, and more manganese SOD isoenzymes. C. arborescens and C. microphylla accumulated more free proline. Our data indicate that SOD and POD with the ascorbate-glutathione cycle have important protective effects in xeric Caragana species under drought stress. Free proline may be crucial in the resistance of C. arborescens and C. microphylla to drought stress. |
| 学科主题 | Plant Sciences |
| 收录类别 | SCI |
| 原文出处 | 10.1007/s11738-012-1015-x |
| 语种 | 英语 |
| WOS记录号 | WOS:000310165900009 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/12284]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 作者单位 | 1.Lanzhou Univ, Minist Educ, Key Lab Arid & Grassland Agroecol, Lanzhou 730000, Peoples R China 2.Gansu Acad Sci, Inst Biol, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 4.NW A&F Univ, Coll Life Sci, Xian 712100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang, Hong-Mei,Chen, Kang,Bai, Juan,et al. Antioxidative system's responses in the leaves of six Caragana species during drought stress and recovery[J]. ACTA PHYSIOLOGIAE PLANTARUM,2012,34(6):2145-2154. |
| APA | Kang, Hong-Mei,Chen, Kang,Bai, Juan,&Wang, Gang.(2012).Antioxidative system's responses in the leaves of six Caragana species during drought stress and recovery.ACTA PHYSIOLOGIAE PLANTARUM,34(6),2145-2154. |
| MLA | Kang, Hong-Mei,et al."Antioxidative system's responses in the leaves of six Caragana species during drought stress and recovery".ACTA PHYSIOLOGIAE PLANTARUM 34.6(2012):2145-2154. |
入库方式： OAI收割
来源：海洋研究所
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