Effects of elevated ozone on physiological, anatomical and ultrastructural characteristics of four common urban tree species in China

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

	Effects of elevated ozone on physiological, anatomical and ultrastructural characteristics of four common urban tree species in China
	Gao, Feng; Calatayud, Vicent; Garcia-Breijo, Francisco; Reig-Arminana, Jose; Feng, Zhaozhong
刊名	ECOLOGICAL INDICATORS
	2016-08
卷号	67 页码:367-379
关键词	Antioxidant system Ozone Photosynthesis Ultrastructure Urban greening species
英文摘要	Fast urbanization has led to ozone (O-3) being the main pollutant in summer in most of China. To assess future ground-level O-3 effects on the service of urban greening species and clarify the underlying mechanism of O-3 damage, four common urban greening species, Ailanthus altissima (AA), Fraxinus chinensis (FC), Platanus orientalis (PO) and Robinia pseudoacacia (RP) were exposed to non-filtered air (NF) and to elevated O3 (E-O-3) in open-top chambers. E-O-3 induced visible injury in all species as well as microscopic alterations such as collapse of the palisade parenchyma cells, callose accumulation, or chloroplast and mitochondrial accelerated senescence. E-O-3 significantly reduced light-saturated CO2 assimilation (A(sat)), the maximum activity of Rubisco (Vc(max)), the maximuni electron transport rate (U-max), and fluorescence parameters such as the quantum yield of noncyclic electron transport (phi(PSII)), and the quenching of photochemical efficiency of PSII (qP). It also increased total antioxidant capacity, phenolics and ascorbate contents. No significant interaction between O-3 and species was found in photosynthetic performance and antioxidant systems, suggesting that the four species selected were sensitive to O-3. Of all four species, AA was the most sensitive species due to a combination of earlier injury onset, anatomical features, lower antioxidant responses and higher stomatal conductance. The sensitivity of tree species to O-3 is a factor to be considered for urban greening. Ozone may affect important urban forest ecosystem services by reducing CO2 assimilation. (C) 2016 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/35569]
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	Gao, Feng,Calatayud, Vicent,Garcia-Breijo, Francisco,et al. Effects of elevated ozone on physiological, anatomical and ultrastructural characteristics of four common urban tree species in China[J]. ECOLOGICAL INDICATORS,2016,67:367-379.
APA	Gao, Feng,Calatayud, Vicent,Garcia-Breijo, Francisco,Reig-Arminana, Jose,&Feng, Zhaozhong.(2016).Effects of elevated ozone on physiological, anatomical and ultrastructural characteristics of four common urban tree species in China.ECOLOGICAL INDICATORS,67,367-379.
MLA	Gao, Feng,et al."Effects of elevated ozone on physiological, anatomical and ultrastructural characteristics of four common urban tree species in China".ECOLOGICAL INDICATORS 67(2016):367-379.