Interactions between drought, ABA application and supplemental UV-B in Populus yunnanensis
文献类型：期刊论文
| 作者 | Duan, BL ; Xuan, ZY ; Zhang, XL ; Korpelainen, H ; Li, CY |
| 刊名 | PHYSIOLOGIA PLANTARUM
 |
| 出版日期 | 2008 |
| 卷号 | 134期号:2页码:257_269 |
| ISSN号 | 0031-9317 |
| 通讯作者 | Li, CY, Chinese Acad Sci, Chengdu Inst Biol, Ctr Ecol Studies, POB 416, Chengdu 610041, Peoples R China. |
| 中文摘要 | To test whether drought and ABA application alter the effects of enhanced UV-B on the growth and biomass allocation of Populus yunnanensis Dode, cuttings were grown in pots at two ABA levels, two watering regimes and two UV-B levels for one growth season. Exposure to enhanced UV-B radiation significantly decreased plant growth and photosynthesis under well-watered conditions, but these effects were obscured by drought, which alone caused growth reduction. Drought may contribute to masking the effects of UV-B radiation. The accumulation of UV-B absorbing compounds and the increase of the ABA content induced by drought could reduce the effectiveness of UV-B radiation. ABA application did not have large direct effects on biomass accumulation and allocation. Evidence for interactions between UV-B and ABA was detected for only a few measured traits. Therefore, there was little evidence to support a pivotal role for ABA in regulating a centralized whole plant response to enhanced UV-B. Yet, we recorded an ABA-induced decrease in stomatal conductance (g(s)) and increase in UV-B absorbing compounds and carbon isotope composition (delta C-13) in response to enhanced UV-B. The allometric analysis revealed that regression models between root and shoot biomass in response to enhanced UV-B are different for plants under well-watered and drought conditions. Enhanced UV-B led to a significant displacement of the allometric regression line under well-watered condition, while allometric trajectories for both UV-B regimes did not differ significantly under drought condition. |
| 学科主题 | Plant Sciences |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China [30525036]; Chinese Academy of Sciences [KSCX2-YW-N-064] |
| 语种 | 英语 |
| 公开日期 | 2011-07-08 |
| 源URL | [http://210.75.237.14/handle/351003/22184]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Duan, BL,Xuan, ZY,Zhang, XL,et al. Interactions between drought, ABA application and supplemental UV-B in Populus yunnanensis[J]. PHYSIOLOGIA PLANTARUM,2008,134(2):257_269. |
| APA | Duan, BL,Xuan, ZY,Zhang, XL,Korpelainen, H,&Li, CY.(2008).Interactions between drought, ABA application and supplemental UV-B in Populus yunnanensis.PHYSIOLOGIA PLANTARUM,134(2),257_269. |
| MLA | Duan, BL,et al."Interactions between drought, ABA application and supplemental UV-B in Populus yunnanensis".PHYSIOLOGIA PLANTARUM 134.2(2008):257_269. |
入库方式： OAI收割
来源：成都生物研究所
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