title: [Changes of Peroxidase, Catalase, and Superoxide Dismutase Activities in Ozone-fumigated Spinach Leaves].
abstract: A sensitive spinach variety, cultivated on nutrient solution, was exposed to lethal and sublethal ozone concentrations for 4 hours. Peroxidase, catalase, and superoxide dismutase (SOD) activities were measured immediately and after one, two, four, and seven days. A significant peroxidase stimulation was observed for seven days at 250 and 125 p.p.b. ozone. Catalase activity increased with the lethal concentration and decreased with the sublethal ones. A superoxide dismutase stimulation still occured after two, four, and seven days, at 60-70, 125, and 250 p.p.b. respectively. In our present experiments, an SOD activity higher than 30 U/g leaves may be considered as a indicator of atmospheric pollution.
authors.affiliation: Institut de Recherches Chimiques, Tervuren, Belgique.
authors.forename: M
authors.initials: M
authors.lastname: Decleire
authors.forename: W
authors.initials: W
authors.lastname: De Cat
authors.forename: L
authors.initials: L
authors.lastname: De Temmerman
authors.forename: H
authors.initials: H
authors.lastname: Baeten