Large variability in ambient ozone sensitivity across 19 ethylenediurea-treated Chinese cultivars of soybean is driven by total ascorbate
文献类型：期刊论文
| 作者 | Jiang, Lijun; Feng, Zhaozhong; Dai, Lulu; Shang, Bo; Paoletti, Elena |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 64页码:10-22 |
| 关键词 | Ground-level ozone Glycine max Cultivar Ozone sensitivity Antioxidants Gas exchange Biomass Total ascorbate |
| ISSN号 | 1001-0742 |
| 文献子类 | Article |
| 英文摘要 | The sensitivity of Chinese soybean cultivars to ambient ozone (O-3) in the field is unknown, although soybean is a major staple food in China. Using ethylenediurea (EDU) as an O-3 protectant, we tested the gas exchange, pigments, antioxidants and biomass of 19 cultivars exposed to 28 ppm.hr AOT40 (accumulated O-3 over an hourly concentration threshold of 40 ppb) over the growing season at a field site in China. By comparing the average biomass with and without EDU, we estimated the cultivar-specific sensitivity to O-3 and ranked the cultivars from very tolerant (<10% change) to highly sensitive (>45% change), which helps in choosing the best-suited cultivars for local cultivation. Higher lipid peroxidation and activity of the ascorbate peroxidase enzyme were major responses to O-3 damage, which eventually translated into lower biomass production. The constitutional level of total ascorbate in the leaves was the most important parameter explaining O-3 sensitivity among these cultivars. Surprisingly, the role of stomatal conductance was insignificant. These results will guide future breeding efforts towards more O-3-tolerant cultivars in China, while strategies for implementing control measures of regional O-3 pollution are being implemented. Overall, these results suggest that present ambient O-3 pollution is a serious concern for soybean in China, which highlights the urgent need for policy-making actions to protect this critical staple food. (C) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/40595]  |
| 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 | Jiang, Lijun,Feng, Zhaozhong,Dai, Lulu,et al. Large variability in ambient ozone sensitivity across 19 ethylenediurea-treated Chinese cultivars of soybean is driven by total ascorbate[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2018,64:10-22. |
| APA | Jiang, Lijun,Feng, Zhaozhong,Dai, Lulu,Shang, Bo,&Paoletti, Elena.(2018).Large variability in ambient ozone sensitivity across 19 ethylenediurea-treated Chinese cultivars of soybean is driven by total ascorbate.JOURNAL OF ENVIRONMENTAL SCIENCES,64,10-22. |
| MLA | Jiang, Lijun,et al."Large variability in ambient ozone sensitivity across 19 ethylenediurea-treated Chinese cultivars of soybean is driven by total ascorbate".JOURNAL OF ENVIRONMENTAL SCIENCES 64(2018):10-22. |
入库方式： OAI收割
来源：生态环境研究中心
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