Elevated ozone decreases the activity of Rubisco in poplar but not its activation under fluctuating light
文献类型：期刊论文
| 作者 | Xu, Yansen2; Feng, Zhaozhong2; Peng, Jinlong3; Tarvainen, Lasse1 |
| 刊名 | TREE PHYSIOLOGY
 |
| 出版日期 | 2022-04-21 |
| 页码 | 14 |
| ISSN号 | 0829-318X |
| 关键词 | dynamic photosynthesis elevated O-3 fluctuating light poplar rubisco activation |
| DOI | 10.1093/treephys/tpac043 |
| 通讯作者 | Feng, Zhaozhong(zhaozhong.feng@nuist.edu.cn) |
| 英文摘要 | Increasing tropospheric ozone (O-3) is well-known to decrease leaf photosynthesis under steady-state light through reductions in biochemical capacity. However, the effects of O-3 on photosynthetic induction and its biochemical limitations in response to fluctuating light remain unclear, despite the rapid fluctuations of light intensity occurring under field conditions. In this study, two hybrid poplar clones with different O-3 sensitivities were exposed to elevated O-3. Dynamic photosynthetic CO2 response measurements were conducted to quantify the impact of elevated O-3 and exposure duration on biochemical limitations during photosynthetic induction. We found that elevated O-3 significantly reduced the steady-state light-saturated photosynthetic rate, the maximum rate of carboxylation (V-cmax) and Rubisco content. In addition, elevated O-3 significantly decreased the time constants for slow phases and weighting of the fast phase of the V-cmax induction in poplar clone '546' but not in clone '107'. However, elevated O-3 did not affect the time, it took to reach a given percentage of full V-cmax activation or photosynthetic induction in either clone. Overall, photosynthetic induction was primarily limited by the activity of Rubisco rather than the regeneration of ribulose-1,5-biphosphate regardless of O-3 concentration and exposure duration. The lack of O-3-induced effects on the activation of Rubisco observed here would simplify the simulation of impacts of O-3 on nonsteady-state photosynthesis in dynamic photosynthetic models. |
| WOS关键词 | NET PRIMARY PRODUCTIVITY ; TEMPERATURE RESPONSE FUNCTIONS ; TROPOSPHERIC OZONE ; PHOTOSYNTHETIC INDUCTION ; STATE PHOTOSYNTHESIS ; STOMATAL CLOSURE ; SIEBOLDS BEECH ; CLIMATE-CHANGE ; MODEL ; EXPOSURE |
| 资助项目 | National Natural Science Foundation of China[41771034] ; National Natural Science Foundation of China[42061160479] |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:000804168500001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/177898]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Feng, Zhaozhong |
| 作者单位 | 1.Univ Gothenburg, Dept Biol & Environm Sci, POB 461, SE-40530 Gothenburg, Sweden 2.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing 210044, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Yansen,Feng, Zhaozhong,Peng, Jinlong,et al. Elevated ozone decreases the activity of Rubisco in poplar but not its activation under fluctuating light[J]. TREE PHYSIOLOGY,2022:14. |
| APA | Xu, Yansen,Feng, Zhaozhong,Peng, Jinlong,&Tarvainen, Lasse.(2022).Elevated ozone decreases the activity of Rubisco in poplar but not its activation under fluctuating light.TREE PHYSIOLOGY,14. |
| MLA | Xu, Yansen,et al."Elevated ozone decreases the activity of Rubisco in poplar but not its activation under fluctuating light".TREE PHYSIOLOGY (2022):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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