Effects of ozone on stomatal responses to environmental parameters (blue light, red light, CO2 and vapour pressure deficit) in three Populus deltoides × Populus nigra genotypes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environmental Pollution Année : 2013

Effects of ozone on stomatal responses to environmental parameters (blue light, red light, CO2 and vapour pressure deficit) in three Populus deltoides × Populus nigra genotypes

Résumé

The effect of ozone (O3) on stomatal regulation was studied in three Euramerican poplar genotypes (Populus deltoides Populus nigra: Carpaccio, Cima and Robusta). The impact of O3 on stomatal conductance responses to variations in blue light, red light, CO2 concentration and vapour pressure deficit (VPD) was studied. Upon O3 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 genotyperelated sensitivity.

Dates et versions

hal-01268444 , version 1 (04-02-2016)

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Jennifer Dumont, Fabien Spicher, Pierre Montpied, Pierre Dizengremel, Yves Jolivet, et al.. Effects of ozone on stomatal responses to environmental parameters (blue light, red light, CO2 and vapour pressure deficit) in three Populus deltoides × Populus nigra genotypes. Environmental Pollution, 2013, 173, pp.85-96. ⟨10.1016/j.envpol.2012.09.026⟩. ⟨hal-01268444⟩
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