Elevated CO2 ameliorated oxidative stress induced by elevated O-3 in Quercus mongolica

doi:10.1007/s11738-009-0415-z

	Elevated CO2 ameliorated oxidative stress induced by elevated O-3 in Quercus mongolica
	Yan, Kun 2,3; Chen, Wei 2; Zhang, Guoyou 2,3; Xu, Sheng 2; Liu, Zhouli 2,3; He, Xingyuan 2; Wang, Lanlan 1
刊名	ACTA PHYSIOLOGIAE PLANTARUM
	2010-03-01
卷号	32 期号:2 页码:375-385
关键词	Antioxidative Systems Co2 O-3 Oxidative Stress Quercus Mongolica
ISSN号	0137-5881
DOI	10.1007/s11738-009-0415-z
英文摘要	Using open top chambers, the effects of elevated O-3 (80 nmol mol(-1)) and elevated CO2 (700 mu mol mol(-1)), alone and in combination, were studied on young trees of Quercus mongolica. The results showed that elevated O-3 increased malondialdehyde content and decreased photosynthetic rate after 45 days of exposure, and prolonged exposure (105 days) induced significant increase in electrolyte leakage and reduction of chlorophyll content. All these changes were alleviated by elevated CO2, indicating that oxidative stress on cell membrane and photosynthesis was ameliorated. After 45 days of exposure, elevated O-3 stimulated activities of superoxide dismutase (SOD, EC 1.15.1.1) and ascorbate peroxidase (APX, EC 1.11.1.11), but the stimulation was dampened under elevated CO2 exposure. Furthermore, ascorbate (AsA) and total phenolics contents were not higher in the combined gas treatment than those in elevated O-3 treatment. It indicates that the protective effect of elevated CO2 against O-3 stress was achieved hardly by enhancing ROS scavenging ability after 45 days of exposure. After 105 days of exposure, elevated O-3 significantly decreased activities of SOD, catalase (CAT, EC 1.11.1.6) and APX and AsA content. Elevated CO2 suppressed the O-3-induced decrease, which could ameliorate the oxidative stress in some extent. In addition, elevated CO2 increased total phenolics content in the leaves both under ambient O-3 and elevated O-3 exposure, which might contribute to the protection against O-3-induced oxidative stress as well.
WOS研究方向	Plant Sciences
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000274655000018
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/121641]
专题	中国科学院沈阳应用生态研究所
通讯作者	He, Xingyuan
作者单位	1.Shenyang Normal Univ, Coll Chem & Life Sci, Shenyang 110034, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Dept Urban Forest, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yan, Kun,Chen, Wei,Zhang, Guoyou,et al. Elevated CO2 ameliorated oxidative stress induced by elevated O-3 in Quercus mongolica[J]. ACTA PHYSIOLOGIAE PLANTARUM,2010,32(2):375-385.
APA	Yan, Kun.,Chen, Wei.,Zhang, Guoyou.,Xu, Sheng.,Liu, Zhouli.,...&Wang, Lanlan.(2010).Elevated CO2 ameliorated oxidative stress induced by elevated O-3 in Quercus mongolica.ACTA PHYSIOLOGIAE PLANTARUM,32(2),375-385.
MLA	Yan, Kun,et al."Elevated CO2 ameliorated oxidative stress induced by elevated O-3 in Quercus mongolica".ACTA PHYSIOLOGIAE PLANTARUM 32.2(2010):375-385.