Elevated ozone negatively affects photosynthesis of current-year leaves but not previous-year leaves in evergreen Cyclobalanopsis glauca seedlings
文献类型：期刊论文
| 作者 | Zhang, Weiwei ; Feng, Zhaozhong ; Wang, Xiaoke ; Niu, Junfeng |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2014 |
| 卷号 | 184期号:1页码:676-681 |
| 关键词 | Chlorophyll a fluorescence Evergreen tree Leaf position Gas exchange Ozone |
| ISSN号 | 0269-7491 |
| 中文摘要 | To assess the effects of leaf age/layer on the response of photosynthesis to chronic ozone (O-3), Cyclobalanopsis glauca seedlings, a dominant evergreen broadleaf tree species in sub-tropical regions, were exposed to either ambient air (AA) or elevated O-3 (AA + 60 ppb O-3, E-O-3) for two growing seasons in open-top chambers. Chlorophyll content, gas exchange and chlorophyll a fluorescence were investigated three times throughout the 2nd year of O-3 exposure. Results indicated that E-O-3 decreased photosynthetic parameters, particularly light-saturated photosynthesis rate, stomatal conductance and effective quantum yield of PSII photochemistry of current-year leaves but not previous-year leaves. Stomata! conductance of plants grown under ambient conditions partially contributed to the different response to E-O-3 between leaf layers. Light radiation or other physiological and biochemical processes closely related to photosynthesis might play important roles. All suggested that leaf ages or layers should be considered when assessing O-3 risk on evergreen woody species. (C) 2013 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000329419200086 |
| 公开日期 | 2015-03-23 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9152]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang, Weiwei,Feng, Zhaozhong,Wang, Xiaoke,et al. Elevated ozone negatively affects photosynthesis of current-year leaves but not previous-year leaves in evergreen Cyclobalanopsis glauca seedlings[J]. ENVIRONMENTAL POLLUTION,2014,184(1):676-681. |
| APA | Zhang, Weiwei,Feng, Zhaozhong,Wang, Xiaoke,&Niu, Junfeng.(2014).Elevated ozone negatively affects photosynthesis of current-year leaves but not previous-year leaves in evergreen Cyclobalanopsis glauca seedlings.ENVIRONMENTAL POLLUTION,184(1),676-681. |
| MLA | Zhang, Weiwei,et al."Elevated ozone negatively affects photosynthesis of current-year leaves but not previous-year leaves in evergreen Cyclobalanopsis glauca seedlings".ENVIRONMENTAL POLLUTION 184.1(2014):676-681. |
入库方式： OAI收割
来源：生态环境研究中心
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