Ecophysiological responses of Abies fabri seedlings to drought stress and nitrogen supply
文献类型：期刊论文
| 作者 | Guo, Jianying1,2,3,4; Yang, Yan1,2 ; Wang, Genxu1,2; Yang, Liudong1,2,4; Sun, Xiangyang1,2,4
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| 刊名 | PHYSIOLOGIA PLANTARUM
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| 出版日期 | 2010 |
| 卷号 | 139期号:4页码:335-347 |
| 关键词 | PICEA-ASPERATA SEEDLINGS WATER-STRESS PHYSIOLOGICAL-RESPONSES OXIDATIVE STRESS CLIMATE-CHANGE MEDITERRANEAN SHRUBLAND ANTIOXIDANT METABOLISM TERRESTRIAL ECOSYSTEMS BIOCHEMICAL RESPONSES SUPEROXIDE-DISMUTASE |
| ISSN号 | 0031-9317 |
| 通讯作者 | Yang, Y（杨燕） |
| 英文摘要 | Abies fabri (Mast.) Craib. (A. fabri) is an endemic and dominant species in typical subalpine dark coniferous forests distributed in mountainous regions of Western Sichuan, China. We investigated the ecophysiological responses of A. fabri seedlings to short-term experimental drought, nitrogen supply and their interaction. Drought stress was created by excluding natural precipitation with automatically controlled plastic roof that covered the seedlings. Nitrogen fertilization was applied weekly by spraying over seedlings ammonium nitrate solution (50 kg N ha-1 year-1) during the growing season of 2009. The results showed that drought stress decreased leaf relative water content (RWC), whereas it caused marked increases in root mass ratio (RMR) and root/shoot mass ratio by 6.19 and 10.39%, respectively, as compared with the control. Drought stress increased malondialdehyde (MDA) content, electrolyte leakage, proline content, soluble sugars content and the activities of antioxidant enzymes, whereas nitrogen supply decreased MDA content, but enhanced activities of some antioxidant enzymes [especially peroxidase (POD)]. In the drought stressed plots, nitrogen supply increased RWC and decreased the content of MDA. The combination of drought stress and nitrogen supply also decreased the activities of antioxidant enzymes. These results indicated that the negative effects of drought stress on A. fabri seedlings might be alleviated by nitrogen supply. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Plant Sciences |
| 研究领域[WOS] | Plant Sciences |
| 关键词[WOS] | PICEA-ASPERATA SEEDLINGS ; WATER-STRESS ; PHYSIOLOGICAL-RESPONSES ; OXIDATIVE STRESS ; CLIMATE-CHANGE ; MEDITERRANEAN SHRUBLAND ; ANTIOXIDANT METABOLISM ; TERRESTRIAL ECOSYSTEMS ; BIOCHEMICAL RESPONSES ; SUPEROXIDE-DISMUTASE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279840300001 |
| 公开日期 | 2013-07-05 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5617]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Environm Change & Regulat, Chengdu Inst Mt Hazards & Environm, Alpine Ecosyst Observat & Expt Stn Gongga Mt, Chengdu 610041, Peoples R China 2.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China 3.Leshan Teachers Coll, Sch Tourism & Econ Management, Leshan 614000, Peoples R China 4.Chinese Acad Sci, Grad Coll, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Jianying,Yang, Yan,Wang, Genxu,et al. Ecophysiological responses of Abies fabri seedlings to drought stress and nitrogen supply[J]. PHYSIOLOGIA PLANTARUM,2010,139(4):335-347. |
| APA | Guo, Jianying,Yang, Yan,Wang, Genxu,Yang, Liudong,&Sun, Xiangyang.(2010).Ecophysiological responses of Abies fabri seedlings to drought stress and nitrogen supply.PHYSIOLOGIA PLANTARUM,139(4),335-347. |
| MLA | Guo, Jianying,et al."Ecophysiological responses of Abies fabri seedlings to drought stress and nitrogen supply".PHYSIOLOGIA PLANTARUM 139.4(2010):335-347. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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