Reduction of air pollution stress of plant using scavengers of reactive oxygen species

研究了赤松、矮牵牛、番茄、草莓、茄子、菜豆等大气污染物对臭氧、硫酸、亚硝酸和多环芳烃的暴露1~3个月。在开顶室或温室中，单一或多种污染物暴露在植物上。测定了植物样品在这些污染物处理前后的光合作用活性、视觉损伤和生长速率。甘露醇等活性氧类清除剂的喷雾处理显著减轻了上述空气污染物对植物的负面影响。使用甘露醇可能是一种很有前途的保护高等植物免受空气污染的技术。

Air pollutants such as ozone, sulfuric acid, nitrous acid and polycyclic aromatic hydrocarbons were exposed to Japanese red pine, petunia, tomato, strawberry, eggplant and kidney bean for 1-3 months. Single or multiple pollutants were exposed on the plants in open top chambers or greenhouse. Photosynthetic activities, visual injuries and growth rates of the plant samples were measured before and after the treatments with these pollutants. Pre-treatment with sprays of scavengers of reactive oxygen species such as mannitol has significantly mitigated negative effects of abovementioned air pollutants on plants. The use of mannitol may be a promising technique to protect higher plants from air pollutants.