Articles
EFFECTS OF OZONE ON PHOTOSYNTHESIS OF MEDITERRANEAN URBAN ORNAMENTAL PLANTS
Article number
496_41
Pages
335 – 338
Language
Abstract
Measurements of leaf gas exchange under saturating light were performed on plants of six species during and after a short-term treatment with ozone (200 ppb, 5 h). Reductions of photosynthetic activity were observed in all the species; they were associated to stomatal closure and/or mesophyll limitations. Laurus nobilis and Hedera canariensis var. azorica showed a quick reduction of stomatal conductance, with a consequential limitation of photosynthetic activity; this species was able to fully recover before the end of the fumigation. Nerium oleander and Hedera helix also showed a significant reduction of photosynthetic activity, associated to a partial stomatal closure.
Photosynthetic efficiency of Viburnum tinus and Arbutus unedo was affected only after the end of the treatment, the main effects being non-stomatal.
Photosynthetic efficiency of Viburnum tinus and Arbutus unedo was affected only after the end of the treatment, the main effects being non-stomatal.
Publication
Authors
G. Lorenzini, C. Nali, G. Ligasacchi, R. Ambrogi
Keywords
air pollution, Arbutus, Hedera, Laurus, Nerium, Viburnum
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