| 臭氧和干旱交互作用对杨树叶片抗氧化酶活性的影响 |
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| 引用本文： | 周慧敏,李品,高峰,冯兆忠,张殷波.臭氧和干旱交互作用对杨树叶片抗氧化酶活性的影响[J].环境科学,2018,39(9):4359-4365. |
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| 作者姓名： | 周慧敏 李品 高峰 冯兆忠 张殷波 |
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| 作者单位： | 山西大学黄土高原研究所;中国科学院生态环境研究中心城市与区域生态国家重点实验室;中国科学院大学资源环境学院;山西大学环境与资源学院 |
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| 基金项目： | 国家自然科学基金项目（31500396，41771034） |
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| 摘 要： | 地表臭氧(O_3)污染和干旱成为严重威胁植物正常生长的主要环境胁迫因子.本文研究3种O_3浓度(CF:过滤空气O_3;NF:未经过滤的环境空气;NF40:NF+40 nmol·mol-1O_3)和2种水分处理(充分灌溉;干旱,60%灌溉)及其交互作用对敏感性杨树品种‘546’(Populus deltoids cv.55/56×P.deltoides cv.Imperial)叶片饱和光合速率、抗氧化酶活性及可溶性蛋白含量的影响.结果表明,O_3浓度升高显著降低饱和光合速率,干旱处理对饱和光合速率的影响不显著,O_3和干旱的交互作用显著.干旱显著降低过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性,且随着处理时间的延长CAT和SOD活性降低显著.处理时间的延长也显著降低抗坏血酸过氧化物酶(APX)活性,增加了可溶性蛋白含量.过氧化物酶(POD)不受O_3、干旱及O_3与干旱交互作用的显著影响.O_3处理以及O_3与干旱的交互作用均未对抗氧化酶活性产生显著影响.该研究结果为应对环境变化背景下O_3浓度升高与干旱加剧对杨树的伤害提供科学依据.
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| 关 键 词： | 杨树 臭氧 干旱 交互 抗氧化酶 |
| 收稿时间： | 2017/12/21 0:00:00 |
| 修稿时间： | 2018/3/4 0:00:00 |
Interactive Effects of Ozone and Drought on Antioxidant Enzyme Activities of Poplar Leaves |
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| ZHOU Hui-min,LI Pin,GAO Feng,FENG Zhao-zhong and ZHANG Yin-bo.Interactive Effects of Ozone and Drought on Antioxidant Enzyme Activities of Poplar Leaves[J].Chinese Journal of Environmental Science,2018,39(9):4359-4365. |
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| Authors: | ZHOU Hui-min LI Pin GAO Feng FENG Zhao-zhong and ZHANG Yin-bo |
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| Institution: | Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China;State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China,State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China,State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China,State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China and College of Environmental Science and Resources, Shanxi University, Taiyuan 030006, China |
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| Abstract: | |
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| Keywords: | poplar ozone drought interaction antioxidant enzymes |
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