Modifications in photosynthetic pigments and chlorophyll fluorescence in 20-year-old pine trees after a four-year exposure to carbon dioxide and temperature elevation
文献类型：期刊论文
| 作者 | Wang, KY ; Kellomaki, S ; Zha, T |
| 刊名 | PHOTOSYNTHETICA
 |
| 出版日期 | 2003 |
| 卷号 | 41期号:2页码:167_175 |
| 关键词 | carotenoids diurnal course environment chambers irradiance leaf temperature photosynthetic photon flux density photosystem 2 Pinus sylvestris seasonal course specific leaf area |
| ISSN号 | 0300-3604 |
| 通讯作者 | Wang, KY, Univ Joensuu, Fac Forestry, POB 111, FIN-80101 Joensuu, Finland. |
| 中文摘要 | Changes in pigment composition and chlorophyll (Chl) fluorescence parameters were studied in 20 year-old Scots pine (Pinus sylvestris L.) trees grown in environment-controlled chambers and subjected to ambient conditions (CON), doubled ambient CO2 concentration (EC), elevated temperature (ambient +2-6 degreesC, ET), or a combination of EC and ET (ECT) for four years. EC did not significantly alter the optimal photochemical efficiency of photosystem 2 (PS2; F-v/F-m), or Chl a+b content during the main growth season (days 150-240) but it reduced F-v/F-m and the Chl a+b content and increased the ratio of total carotenoids to Chl a+b during the 'off season'. By contrast, ET significantly enhanced the efficiency of PS2 in terms of increases in F-v/F-m and Chl a+b content throughout the year, but with more pronounced enhancement in the 'off season'. The reduction in Fv/Fm during autumn could be associated with the CO2-induced earlier yellowing of the leaves, whereas the temperature-stimulated increase in the photochemical efficiency of PS2 during the 'off season' could be attributed to the maintenance of a high sink capacity. The pigment and fluorescence responses in the case of ECT showed a similar pattern to that for ET, implying the importance of the temperature factor in future climate changes in the boreal zone. |
| 学科主题 | Plant Sciences |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2011-07-08 |
| 源URL | [http://210.75.237.14/handle/351003/21420]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Wang, KY,Kellomaki, S,Zha, T. Modifications in photosynthetic pigments and chlorophyll fluorescence in 20-year-old pine trees after a four-year exposure to carbon dioxide and temperature elevation[J]. PHOTOSYNTHETICA,2003,41(2):167_175. |
| APA | Wang, KY,Kellomaki, S,&Zha, T.(2003).Modifications in photosynthetic pigments and chlorophyll fluorescence in 20-year-old pine trees after a four-year exposure to carbon dioxide and temperature elevation.PHOTOSYNTHETICA,41(2),167_175. |
| MLA | Wang, KY,et al."Modifications in photosynthetic pigments and chlorophyll fluorescence in 20-year-old pine trees after a four-year exposure to carbon dioxide and temperature elevation".PHOTOSYNTHETICA 41.2(2003):167_175. |
入库方式： OAI收割
来源：成都生物研究所
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