期刊
ENVIRONMENTAL POLLUTION
卷 173, 期 -, 页码 85-96出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.09.026
关键词
Ozone; Stomatal conductance; Light; CO2 concentration; VPD
资金
- French National Research Agency, ANR, project VMCS Vulnoz
- ANR
- Lorraine Region
The effect of ozone (O-3) on stomatal regulation was studied in three Euramerican poplar genotypes (Populus deltoides x Populus nigra: Carpaccio, Cima and Robusta). The impact of O-3 on stomatal conductance responses to variations in blue light, red light, CO2 concentration and vapour pressure deficit (VPD) was studied. Upon O-3 exposure, a sluggish response of stomatal movements was observed, characterized by slower reactions to increases in blue light intensity, CO2 concentration and VPD, and lower amplitude of the response to variations in light intensity. That sluggish response should be taken into account in stomatal conductance models for phytotoxic ozone dose (PODY) calculations. The speed of the response to variations in environmental parameters appears as a determining factor of genotype-related sensitivity. (C) 2012 Elsevier Ltd. All rights reserved.
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