Effects of Elevated Carbon Dioxide and Ozone on Foliar Flavonoids of Ginkgo Biloba
To investigate the effect of elevated CO2 and O3 on the accumulation of flavonoids in Ginkgo Biloba leaves,four-year-old trees were exposed in open-top chambers with ambient and twice ambient CO2 and O3 concentrations singly and in combination in 2006.The results show that elevated CO2 reduce the concentrations of keampferol aglycon (-10％),isorhamnetin aglycon (-15％).Elevated O3 reduce the concentrations of the isorhamnetin aglycon (-7％),but increase the concentration of quercetin aglycon (+6％).Under elevated CO2 and O3 in combination,03-derived effects on flavonoids concentrations are changed by elevated CO2,which are similar to that under the elevated CO2 alone.In conclusion,the concentrations of flavonoids are influenced by the changes in leaf dry mass induced by elevated CO2 and elevated O3.Furthermore,some flavonoids may not respond as antioxidant under ozone stress in ginkgo leaves.
Ginkgo Biloba Foliar flavonoids Elevated CO2 Elevated O3 Leaf dry mass
Wei Huang Xinyuan He Changbing Liu Dewen Li
Tianjin Research Institute for Water Transport Engineering,2618＃,Xingang road No.2,Tanggu,Tianjin,Ch Institute of Applied Ecology,Chinese Academy of Science,Shenyang 110016,China Tianjin Research Institute for Water Transport Engineering,2618＃,Xingang road No.2,Tanggu,Tianjin,Ch Institute of Applied Ecology,Chinese Academy of Science,Shenyang 110016,China Key Laboratory of Fore
国际会议
哈尔滨
英文
165-169
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）