Nonlinear responses of foliar phenylpropanoids to increasing O-3 exposure: Ecological implications in a Populus model system
文献类型：期刊论文
| 作者 | Li, Zhengzhen; Yang, Jian; Shang, Bo; Agathokleous, Evgenios; Rubert-Nason, Kennedy F.; Xu, Yansen ; Feng, Zhaozhong
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2021-05-01 |
| 卷号 | 767页码:- |
| 关键词 | Hormesis Poplar Air pollution Phenolic compounds Antioxidants Nitrogen availability |
| ISSN号 | 0048-9697 |
| 英文摘要 | Plant phenolic compounds (phenyl propanoids) act as defense chemicals against herbivores and can mediate ecosystem processes. Tropospheric ozone (O-3) pollution alters concentrations of plant phenolics; however, little is known about how these phytochemicals respond to different levels O-3 exposure. Here, we investigated the effects of five different O-3 exposure levels on foliar concentrations of phenylpropanoids (53 compounds in total) and antioxidative capacity in hybrid Populus (Populus euramericana cv. '74/76') saplings grown in the presence of high or low soil nitrogen (N) load. Increasing O-3 exposure initially increased and then deceased total concentrations of phenolic compounds, revealing a biphasic exposure-response profile (hormetic zone: 1.1-36.3 ppm h AOT40). This biphasic response pattern was driven by changes in a subset of phenylpropanoids with high antioxidative capacity (e.g. condensed tannins) but not in phenolics with low antioxidative capacity (e.g. salicinoids). The O-3 exposure-response relationships of some phenylpropanoids (e.g. flavonoids and chlorogenic acids) varied in response to soil N, with hormesis occurring in high N soil but not in low N soil. Collectively, our findings indicated that plant phenolic compounds exhibit nonlinear responses to increasing O-3 exposure, and that the responses vary in relation to phenolic compound class, antioxidative capacity, and soil nitrogen conditions. Our findings further suggest that the impact of O-3 on ecological processes mediated by phenolics will be concentration-dependent, highlighting the complexity of the ecological effects of ground-level O-3 pollution. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45519]  |
| 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.China Acad Chinese Med Sci, Natl Resource Ctr Chinese Mat Med, State Key Lab Breeding Base Dao Di Herbs, Beijing 100700, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Shuangqing Rd 18, Beijing 100085, Peoples R China 3.Univ Maine Ft Kent, Ft Kent, ME 04743 USA 4.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Inst Ecol, Key Lab Agrometeorol Jiangsu Prov, Nanjing 210044, Peoples R Chin |
| 推荐引用方式 GB/T 7714 | Li, Zhengzhen,Yang, Jian,Shang, Bo,et al. Nonlinear responses of foliar phenylpropanoids to increasing O-3 exposure: Ecological implications in a Populus model system[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,767:-. |
| APA | Li, Zhengzhen.,Yang, Jian.,Shang, Bo.,Agathokleous, Evgenios.,Rubert-Nason, Kennedy F..,...&Feng, Zhaozhong.(2021).Nonlinear responses of foliar phenylpropanoids to increasing O-3 exposure: Ecological implications in a Populus model system.SCIENCE OF THE TOTAL ENVIRONMENT,767,-. |
| MLA | Li, Zhengzhen,et al."Nonlinear responses of foliar phenylpropanoids to increasing O-3 exposure: Ecological implications in a Populus model system".SCIENCE OF THE TOTAL ENVIRONMENT 767(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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