Exogenous application of melatonin protects bean and tobacco plants against ozone damage by improving antioxidant enzyme activities, enhancing photosynthetic performance, and preventing membrane damage.

Ozone (O) pollution is harmful to plants and ecosystems. Several chemicals have been evaluated to protect plants against O deleterious effects. However, they are not adequately efficient and/or the environmental safety of their application is questioned.

Application and further characterization of the snap bean S156/R123 ozone biomonitoring system in relation to ambient air temperature.

Increased mixing ratios of ground-level ozone (O) threaten individual plants, plant communities and ecosystems. In this sense, O biomonitoring is of great interest. The O-sensitive S156 and the O-tolerant R123 genotypes of snap bean (Phaseolus vulgaris L.