Response of Ginkgo biloba growth and physiological traits to ozone stress

• DOI: 10.1016/j.gecco.2022.e02020
• Publication Date: 2022-01-20T04:19:29Z
• Authors: Bo Chen; Jingjing Xu; Donghuan Liu; Xinbing Yang
• Keywords: Stomatal Conductance

Ginkgo biloba, the main greening tree species in Beijing, was used to study effects of elevated ozone (O3) concentrations on physiology and ecology using an open-top air chamber (OTC). We set three O3 concentration gradients (NF: normal atmospheric concentration; NF40: plus 40 nmol/mol; NF80: 80 nmol/mol). Based theoretical basis coupling transpiration through stomata, uptake from leaf surface G. biloba studied under artificial control. The results showed that with increased, leaves were damaged, stomatal density, aperture, size, net photosynthetic rate, conductance, chlorophyll content decreased, while intercellular CO2 relative conductivity increased. monthly daily variations liquid flow density decreased increase concentration. Similarly, water consumption rate (FO3) concentration: Water by entire NF40 NF80 compared NF, rates decline 68.77% 78.38%, respectively. FO3 decrease 15.48% 31.04%,