Impacts of elevated ozone on growth and photosynthesis of Metasequoia glyptostroboides Hu et Cheng
文献类型：期刊论文
| 作者 | Zhang, Weiwei ; Feng, Zhaozhong ; Wang, Xiaoke ; Niu, Junfeng |
| 刊名 | PLANT SCIENCE
 |
| 出版日期 | 2014 |
| 卷号 | 226期号:1页码:182-188 |
| 关键词 | Growth Metasequoia glyptostroboides Ozone Photosynthesis Living fossil species |
| ISSN号 | 0168-9452 |
| 中文摘要 | One-year-old Metasequoia glyptostroboides seedlings were exposed to non-filtered ambient air (NF) and elevated ozone (E-O-3, NF+ 60 ppb) in open-top chambers for two years. E-O-3 accelerated leaf senescence, as indicated by significant decreases in photosynthetic pigment contents with the elongation of O-3 exposure. E-O-3 significantly affected gas exchange and carboxylation, inducing reductions in light-saturated photosynthesis (A(sat)), the maximum activity of Rubisco (V-c,V-max) and the maximum electron transport rate (J(max)). Chl a/b, V-c,V-max/J(max) and stomatal limitation (l) were not affected. Stomatal conductance (g(s)) was significantly decreased by E-O-3 in the first year, but remained unchanged in the second year. It can be inferred that the decrease in A(sat) by E-O-3 was mainly attributed to the changes in non-stomatal factors. After two years' exposure, E-O-3 caused significant decreases in canopy photosynthesis and leaf mass per area, and a significant increase in the number of branches, but induced slight, not significant decreases in growth and biomass. Therefore, it can be concluded that the carbon accumulation of the species M. glyptostroboides could be negatively affected after long-term exposure to high O-3 concentration. (C) 2014 Elsevier Ireland Ltd. All rights reserved. |
| WOS记录号 | WOS:000340983000020 |
| 公开日期 | 2015-03-23 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9177]  |
| 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. Impacts of elevated ozone on growth and photosynthesis of Metasequoia glyptostroboides Hu et Cheng[J]. PLANT SCIENCE,2014,226(1):182-188. |
| APA | Zhang, Weiwei,Feng, Zhaozhong,Wang, Xiaoke,&Niu, Junfeng.(2014).Impacts of elevated ozone on growth and photosynthesis of Metasequoia glyptostroboides Hu et Cheng.PLANT SCIENCE,226(1),182-188. |
| MLA | Zhang, Weiwei,et al."Impacts of elevated ozone on growth and photosynthesis of Metasequoia glyptostroboides Hu et Cheng".PLANT SCIENCE 226.1(2014):182-188. |
入库方式： OAI收割
来源：生态环境研究中心
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