title: Phenolic compounds and antioxidant ability responses to experimental free-air ozone exposure in two wheat cultivars.
abstract: Effects of elevated ozone concentrations [O3] on two wheat (Triticum aestivum L.) cultivars [Yangmai16 (Y16) and Yannong19 (Y19)] were investigated to determine the different metabolic mechanisms of phenolic compounds under O3-FACE (free-air controlled enrichment) condition. This study specifically investigated changes of phenolic compounds content, secondary metabolism related enzymes activities, lipid peroxidation extent and reactive oxygen species (ROS) content in the leaves of two wheat cultivars. Results indicated that elevated [O3] (1.5 × ambient [O3]) induced different regulation mechanisms of secondary metabolism in different wheat cultivars. Lipid peroxidation and ROS content increased under O3 stress, and these results were more pronounced in the leaves of Y19 than in those of Y16, suggesting that Y19 is more sensitive to O3 than Y16.
authors.affiliation: State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing, 210008, Jiangsu, People's Republic of China.
authors.forename: JunLi
authors.initials: J
authors.lastname: Wang
authors.forename: JianGuo
authors.initials: J
authors.lastname: Zhu
authors.forename: Qing
authors.initials: Q
authors.lastname: Zeng
authors.forename: Gang
authors.initials: G
authors.lastname: Liu
mesh_terms: D000388:Air / Q000032:analysis*; D000393:Air Pollutants / Q000494:pharmacology; D000975:Antioxidants / Q000378:metabolism*; D004780:Environment, Controlled; D015227:Lipid Peroxidation / Q000187:drug effects; D018384:Oxidative Stress / Q000187:drug effects; D010126:Ozone / Q000494:pharmacology*; D010636:Phenols / Q000378:metabolism*; D018515:Plant Leaves / Q000187:drug effects / Q000378:metabolism; D017382:Reactive Oxygen Species / Q000378:metabolism; D014908:Triticum / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism*
chemical_list: D000393:Air Pollutants; D000975:Antioxidants; D010636:Phenols; D017382:Reactive Oxygen Species; D010126:Ozone