Research output: Contribution to Journal/Magazine › Journal article
Research output: Contribution to Journal/Magazine › Journal article
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TY - JOUR
T1 - Effects of ozone on growth and gas exchange of Eucalyptus globulus seedlings.
AU - Pearson, Mark
PY - 1994
Y1 - 1994
N2 - To study the effects of a low concentration of ozone on growth and gas exchange in Eucalyptus globulus Labill. seedlings, ozone was applied for 37 days at a concentration of 50 ppb for 7 h daily under conditions of low light (250 µmol m–2 s–1 (PAR)) and controlled temperature (20 °C). The seedlings exhibited extreme sensitivity to ozone. The ozone treatment reduced total plant biomass but had no effect on the partitioning of assimilate. Photosynthesis, stomatal conductance and internal CO2 concentration were all reduced by ozone. The decline in photosynthesis was partly the result of direct effects of ozone on the stomata.
AB - To study the effects of a low concentration of ozone on growth and gas exchange in Eucalyptus globulus Labill. seedlings, ozone was applied for 37 days at a concentration of 50 ppb for 7 h daily under conditions of low light (250 µmol m–2 s–1 (PAR)) and controlled temperature (20 °C). The seedlings exhibited extreme sensitivity to ozone. The ozone treatment reduced total plant biomass but had no effect on the partitioning of assimilate. Photosynthesis, stomatal conductance and internal CO2 concentration were all reduced by ozone. The decline in photosynthesis was partly the result of direct effects of ozone on the stomata.
KW - air pollution
KW - biomass
KW - stomata
KW - stomatal conductance.
M3 - Journal article
VL - 15
SP - 207
EP - 210
JO - Tree Physiology
JF - Tree Physiology
SN - 1758-4469
ER -