Stomatal response drives between-species difference in predicted leaf water-use efficiency under elevated ozone
文献类型：期刊论文
| 作者 | Xu, Yansen ; Shang, Bo; Peng, Jinlong; Feng, Zhaozhong; Tarvainen, Lasse
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| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2021-01-15 |
| 卷号 | 269页码:- |
| 关键词 | Ozone Photosynthesis Stomatal conductance Water use efficiency Leaf photosynthetic model |
| ISSN号 | 0269-7491 |
| 英文摘要 | Ozone-induced changes in the relationship between photosynthesis (A(n)) and stomatal conductance (g(s)) vary among species, leading to inconsistent water use efficiency (WUE) responses to elevated ozone (O-3). Thus, few vegetation models can accurately simulate the effects of O-3 on WUE. Here, we conducted an experiment exposing two differently O-3-sensitive species (Cotinus coggygria and Magnolia denudata) to five O-3 concentrations and investigated the impact of O-3 exposure on predicted WUE using a coupled A(n)-g(s) model. We found that increases in stomatal O-3 uptake caused linear reductions in the maximum rates of Rubisco carboxylation (V-cmax) and electron transport (J(max)) in both species. In addition, a negative linear correlation between O-3-induced changes in the minimal g(s) of the stomatal model (g(0)) derived from the theory of optimal stomatal behavior and light-saturated photosynthesis was found in the O-3-sensitive M. denudata. When the O-3 dose-based responses of V-cmax and J(max) were included in a coupled A(n)-g(s) model, simulated A(n) under elevated O-3 were in good agreement with observations in both species. For M. denudata, incorporating the O-3 response of g(0) into the coupled model further improved the accuracy of the simulated g(s) and WUE. In conclusion, the modified V-cmax, J(max) and g(0) method presented here provides a foundation for improving the prediction for O-3-induced changes in A(n), g(s) and WUE. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45574]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 作者单位 | 1.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Inst Ecol, Key Lab Agrometeorol Jiangsu Prov, Nanjing 210044, Peoples R Chin 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Univ Gothenburg, Dept Biol & Environm Sci, SE-40530 Gothenburg, Sweden |
| 推荐引用方式 GB/T 7714 | Xu, Yansen,Shang, Bo,Peng, Jinlong,et al. Stomatal response drives between-species difference in predicted leaf water-use efficiency under elevated ozone[J]. ENVIRONMENTAL POLLUTION,2021,269:-. |
| APA | Xu, Yansen,Shang, Bo,Peng, Jinlong,Feng, Zhaozhong,&Tarvainen, Lasse.(2021).Stomatal response drives between-species difference in predicted leaf water-use efficiency under elevated ozone.ENVIRONMENTAL POLLUTION,269,-. |
| MLA | Xu, Yansen,et al."Stomatal response drives between-species difference in predicted leaf water-use efficiency under elevated ozone".ENVIRONMENTAL POLLUTION 269(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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