Sexual differences in defensive and protective mechanisms of Populus cathayana exposed to high UV-B radiation and low soil nutrient status
文献类型：期刊论文
| 作者 | Feng, Lihua1,2; Jiang, Hao3 ; Zhang, Yuanbin3; Zhang, Sheng3
|
| 刊名 | PHYSIOLOGIA PLANTARUM
 |
| 出版日期 | 2014-08-01 |
| 卷号 | 151期号:4页码:434-445 |
| 关键词 | Dioecy UV-B radiation soil nutrient status sexual differences poplar |
| ISSN号 | 0031-9317 |
| 通讯作者 | Sheng Zhang |
| 合作状况 | 国内 |
| 英文摘要 | Previous studies have indicated that Populus cathayana Rehder females are more sensitive and less tolerant to stressful environments than males, but it is still unknown whether there are sexual differences in defensive and protective traits under high UV-B (HUVB) radiation and low soil nutrient status. In this study, P. cathayana was employed as a model species to investigate sex-related physiological and biochemical responses to UV-B radiation under different soil nutrient conditions. Cuttings were exposed to two UV-B radiation regimes (ambient UV-B radiation and decreased UV-B radiation) under two soil nutrient status (topsoil and deep soil) for 100 days over one growing season. Both HUVB radiation and low soil nutrient status induced greater decreases in plant growth, dry mass accumulation, gas exchange and leaf nitrogen use efficiency in females than in males, and greater increases in lipid peroxide and antioxidant enzyme activities, and secondary defense capacities in males than in females. Moreover, sexually different responses happened also in organelle ultrastructure. Our results showed that: (1) females suffered greater negative effects and exhibited lower defense capacities than did males under HUVB radiation, low soil nutrient status and their combination; (2) low soil nutrient status reduced plant's sensitivity to HUVB radiation by increasing allocation to defense and decreasing allocation to growth compared with high soil nutrient status. These results provide evidence that sexually different tradeoffs happen between growth and defense in P. cathayana under HUVB radiation and low soil nutrient status. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | 林学 |
| 类目[WOS] | Plant Sciences |
| 研究领域[WOS] | Plant Sciences |
| 关键词[WOS] | SALIX-MYRSINIFOLIA ; PHYSIOLOGICAL-RESPONSES ; SECONDARY METABOLITES ; ADAPTIVE RESPONSES ; DROUGHT STRESS ; CLIMATE-CHANGE ; GAS-EXCHANGE ; ELEVATED CO2 ; PLANT ; GROWTH |
| 收录类别 | SCI |
| 原文出处 | http://onlinelibrary.wiley.com/doi/10.1111/ppl.12126/full |
| 语种 | 英语 |
| WOS记录号 | WOS:000340253700006 |
| 公开日期 | 2013-12-19 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/6645]  |
| 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, Chengdu Inst Biol, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Lihua,Jiang, Hao,Zhang, Yuanbin,et al. Sexual differences in defensive and protective mechanisms of Populus cathayana exposed to high UV-B radiation and low soil nutrient status[J]. PHYSIOLOGIA PLANTARUM,2014,151(4):434-445. |
| APA | Feng, Lihua,Jiang, Hao,Zhang, Yuanbin,&Zhang, Sheng.(2014).Sexual differences in defensive and protective mechanisms of Populus cathayana exposed to high UV-B radiation and low soil nutrient status.PHYSIOLOGIA PLANTARUM,151(4),434-445. |
| MLA | Feng, Lihua,et al."Sexual differences in defensive and protective mechanisms of Populus cathayana exposed to high UV-B radiation and low soil nutrient status".PHYSIOLOGIA PLANTARUM 151.4(2014):434-445. |
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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