Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15564 |
Reduced photosynthetic thermal acclimation capacity under elevated ozone in poplar (Populus tremula) saplings | |
Lulu Dai; Yansen Xu; Harry Harmens; Honglang Duan; Zhaozhong Feng; Felicity Hayes; Katrina Sharps; Alan Radbourne; Lasse Tarvainen | |
2021-03-11 | |
发表期刊 | Global Change Biology
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出版年 | 2021 |
英文摘要 | The sensitivity of photosynthesis to temperature has been identified as a key uncertainty for projecting the magnitude of the terrestrial carbon cycle response to future climate change. Although thermal acclimation of photosynthesis under rising temperature has been reported in many tree species, whether tropospheric ozone (O3) affects the acclimation capacity remains unknown. In this study, temperature responses of photosynthesis (light‐saturated rate of photosynthesis (Asat), maximum rates of RuBP carboxylation (Vcmax), and electron transport (Jmax) and dark respiration (Rdark) of Populus tremula exposed to ambient O3 (AO3, maximum of 30 ppb) or elevated O3 (EO3, maximum of 110 ppb) and ambient or elevated temperature (ambient +5°C) were investigated in solardomes. We found that the optimum temperature of Asat (ToptA) significantly increased in response to warming. However, the thermal acclimation capacity was reduced by O3 exposure, as indicated by decreased ToptA, and temperature optima of Vcmax (ToptV) and Jmax (ToptJ) under EO3. Changes in both stomatal conductance (gs) and photosynthetic capacity (Vcmax and Jmax) contributed to the shift of ToptA by warming and EO3. Neither Rdark measured at 25°C ( |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/318549 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Lulu Dai,Yansen Xu,Harry Harmens,et al. Reduced photosynthetic thermal acclimation capacity under elevated ozone in poplar (Populus tremula) saplings[J]. Global Change Biology,2021. |
APA | Lulu Dai.,Yansen Xu.,Harry Harmens.,Honglang Duan.,Zhaozhong Feng.,...&Lasse Tarvainen.(2021).Reduced photosynthetic thermal acclimation capacity under elevated ozone in poplar (Populus tremula) saplings.Global Change Biology. |
MLA | Lulu Dai,et al."Reduced photosynthetic thermal acclimation capacity under elevated ozone in poplar (Populus tremula) saplings".Global Change Biology (2021). |
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