6533b854fe1ef96bd12af28e
RESEARCH PRODUCT
Similar Effects of Ozone on Four Cultivars of Lettuce in Open Top Chambers During Winter
ÁNgeles CalatayudJ.w. AlvaradoE. Barrenosubject
PollutantOzonebiologyPhysiologyfood and beveragesLactucaPlant Sciencebiology.organism_classificationPhotosynthesischemistry.chemical_compoundHorticulturechemistryvisual_artChlorophyllBotanyvisual_art.visual_art_mediumCultivarCharcoalChlorophyll fluorescencedescription
Ozone is the major phytotoxic air pollutant that reduces the yield of several agricultural crops in the Spanish Mediterranean area. We studied four lettuce cultivars (Lactuca sativa L.) for the effects of different O3 concentrations during the winter on chlorophyll (Chl) a fluorescence, lipid peroxidation, and root length in outdoor open-top chambers. Under O3 the photosynthetic quantum conversion declined while heat emissions increased in all cultivars; these results provide more evidence of non-filtered air with additional ozone (NFA+O3) treatment compared with non-filtered air (NFA) and charcoal filtered ozone-free air (CFA). Changes in the Chl a fluorescence may be associated with an increase in membrane lipid peroxidation as well as with observed reduction of root length under O3 stress.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-06-01 | Photosynthetica |