Maamar Benchohra, Maatoug Mohamed, Iriti Marcello, Dellal Abdelkader, Ait hammou Mohammed
Laboratory of Agro-Biotechnology and Nutrition on Semi-arid Areas, Faculty of Natural and Life Sciences, Ibn khaldoun University of Tiaret, Tiaret, Algeria,
Environ Sci Pollut Res Int. 2015 Aug;22(16):12124-32. doi: 10.1007/s11356-015-4490-y. Epub 2015 Apr 17.
The sensitivity of two tomato (Solanum lycopersicum L.) cultivars, Rechaiga II and De Colgar, to 50, 80, and 100 ppb ozone (O3) 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.
在熏蒸室内，每天暴露于50、80和100 ppb臭氧（O₃）环境中4小时，持续7天，评估了两个番茄（Solanum lycopersicum L.）品种Rechaiga II和De Colgar的敏感性。结果表明，Rechaiga II品种对50 ppb的剂量敏感，在叶片正面出现褪绿斑点，并伴有一些生理参数的变化。在为期1周的熏蒸过程中，臭氧导致气孔导度、叶绿素a和b、总叶绿素以及类胡萝卜素含量下降，不过与对照相比，熏蒸处理的植株中可溶性糖含量和膜完整性显著增加。熏蒸中使用的三种污染物剂量呈现出相似的趋势。De Colgar番茄未出现症状。
