title: Regulatory Effects of Elevated Carbon Dioxide on Growth and Biochemical Responses to Ozone Stress in Chinese Pine (Pinus tabulaeformis Carr.).
abstract: This study examined whether carbon dioxide (CO2) might alleviate ozone (O3) injury to the dominant coniferous forest species of northern China, Pinus tabulaeformis Carr. After 90 days O3exposure, biomass and net photosynthetic rate (Pn) decreased significantly by 24.44 % and 42.89 % compared with the control. A significant increase in malondialdehyde (MDA) was shown, suggesting cell membrane damage and oxidative stress. However, the positive responses of biomass dry weight, antioxidative enzymes and soluble sugar contents under elevated CO2alone and the combination of elevated CO2and O3were observed, indicating that CO2could ameliorate O3-induced injury. The study provided increasing evidence that moderately elevated CO2levels may have a beneficial effect on the forest ecosystem to respond to global climate change.
authors: CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, 110016, China.
authors: Zhouli
authors: Z
authors: Liu
authors: CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, 110016, China.
authors: Wei
authors: W
authors: Chen
authors: CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, 110016, China. forestry83@hotmail.com.
authors: Xingyuan
authors: X
authors: He
authors: CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, 110016, China.
authors: Shilei
authors: S
authors: Fu
authors: CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning, 110016, China.
authors: Tao
authors: T
authors: Lu
mesh_terms: D018533:Biomass; D002245:Carbon Dioxide / Q000378:metabolism*; D002681:China; D057231:Climate Change; D017753:Ecosystem; D065928:Forests; D010126:Ozone / Q000633:toxicity*; D010788:Photosynthesis / Q000187:drug effects; D028223:Pinus / Q000502:physiology
chemical_list: D002245:Carbon Dioxide; D010126:Ozone
keywords: Carbon dioxide; Ozone; Pinus tabulaeformis Carr.; Response