Physiological effects of ozone exposure on De Colgar and Rechaiga II tomato (Solanum lycopersicum L.) cultivars

• Published in: Environmental science and pollution research international Vol. 22; no. 16; pp. 12124 - 12132
• Main Authors: Maamar, Benchohra, Maatoug, Mohamed, Iriti, Marcello, Dellal, Abdelkader, Ait hammou, Mohammed
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2015; Springer Nature B.V
• Subjects: Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Carotenoids; Carotenoids - analysis; Carotenoids - metabolism; Chlorophyll - analysis; Chlorophyll - metabolism; Cultivars; Earth and Environmental Science; Ecotoxicology; Environment; Environmental Chemistry; Environmental Health; Experiments; Flowers & plants; Fumigation; Leaves; Lycopersicon esculentum; Lycopersicon esculentum - drug effects; Lycopersicon esculentum - metabolism; Ozone; Ozone - chemistry; Ozone - pharmacology; Physiology; Plant Leaves - drug effects; Plant Leaves - metabolism; Pollutants; Research Article; Software; Solanum; Solanum lycopersicum; Stomata; Stomatal conductance; Tomatoes; Waste Water Technology; Water Management; Water Pollution Control; Algeria; Physiological parameters; Tropospheric ozone; Fumigation; Chlorotic spots; L
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-015-4490-y

The sensitivity of two tomato ( Solanum lycopersicum L.) cultivars, Rechaiga II and De Colgar, to 50, 80, and 100 ppb ozone (O 3 ) exposures was assessed in fumigation chamber, during 4 h per day over a period of 7 days. The Rechaiga II variety was shown to be sensitive to the dose of 50 ppb, showing chlorotic spots on the adaxial leaf surface and alterations of some physiological parameters. During 1-week fumigation, ozone caused a decrease in stomatal conductance, chlorophylls a and b , total chlorophylls, and carotenoids, although soluble sugars and membrane integrity were significantly increased in fumigated plants compared to controls. This trend was similar for the three pollutant doses used in fumigation. The De Colgar tomato remained asymptomatic.