Ethylenediurea (EDU) pretreatment alleviated the adverse effects of elevated O-3 on Populus alba Berolinensis in an urban area

CORC > 生态环境研究中心 > 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

	Ethylenediurea (EDU) pretreatment alleviated the adverse effects of elevated O-3 on Populus alba Berolinensis in an urban area
	Xu, Sheng ; He, Xingyuan ; Burkey, Kent 1; Chen, Wei ; Li, Pin 2; Li, Yan ; Li, Bo ; Wang, Yijing
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2019-10-01
卷号	84 页码:42-50
关键词	Ground-level O-3 Foliar visible injury Open top chambers (OTCs) Poplar VOC emission
ISSN号	1001-0742
英文摘要	Ethylenediurea (EDU) has been used as a chemical protectant against ozone (O-3). However, its protective effect and physiological mechanisms are still uncertain. The present study aimed to investigate the changes of foliar visible injury, physiological characteristics and emission rates of volatile organic compounds (VOCs) in one-year-old Populus alba Berolinensis saplings pretreated with EDU and exposed to elevated O-3 (EO, 120 mu g/m(3)). The results showed that foliar visible injury symptoms under EO were significantly alleviated in plants with EDU application (p < 0.05). Under EO, net photosynthetic rate, the maximum photochemical efficiency of PSII and the photochemical efficiency of PSII of plants pretreated with 300 and 600 mg/L EDU were similar to unexposed controls and significantly higher compared to EO-stressed plants without EDU pretreatment, respectively. Malondialdehyde content was highest in EO without EDU and decreased significantly by 14.9% and 21.3% with 300 and 600 mg/L EDU pretreatment, respectively. EDU pretreatment alone increased superoxide dismutase activity by 10-fold in unexposed plants with further increases of 88.4% and 37.5% in EO plants pretreated with 300 and 600 mg/L EDU pretreatment, respectively (p < 0.05). Abscisic acid content declined under EO relative to unexposed controls with the effect partially reversed by EDU pretreatments. Similarly, VOCs emission rate declined under EO relative to unexposed plants with a recovery of emission rate observed with 300 and 600 mg/L EDU pretreatment. These findings provided significant evidence that EDU exerted a beneficial effect and protection on the tested plants against O-3 stress. (C) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42411]
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.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Liaoning, Peoples R China 2.USDA ARS, Plant Sci Res Unit, Raleigh, NC 27616 USA 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Xu, Sheng,He, Xingyuan,Burkey, Kent,et al. Ethylenediurea (EDU) pretreatment alleviated the adverse effects of elevated O-3 on Populus alba Berolinensis in an urban area[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2019,84:42-50.
APA	Xu, Sheng.,He, Xingyuan.,Burkey, Kent.,Chen, Wei.,Li, Pin.,...&Wang, Yijing.(2019).Ethylenediurea (EDU) pretreatment alleviated the adverse effects of elevated O-3 on Populus alba Berolinensis in an urban area.JOURNAL OF ENVIRONMENTAL SCIENCES,84,42-50.
MLA	Xu, Sheng,et al."Ethylenediurea (EDU) pretreatment alleviated the adverse effects of elevated O-3 on Populus alba Berolinensis in an urban area".JOURNAL OF ENVIRONMENTAL SCIENCES 84(2019):42-50.