Torbati S, Movafeghi A, Khataee A R
a Department of Plant Biology, Faculty of Natural Sciences , University of Tabriz , Tabriz , Iran.
Int J Phytoremediation. 2015;17(1-6):322-9. doi: 10.1080/15226514.2014.910165.
The present study was conducted to evaluate the potential of aquatic vascular plant, Nasturtium officinale, for degradation of C.I. Acid Blue 92 (AB92). The effect of operational parameters such as initial dye concentration, plant biomass, pH, and temperature on the efficiency of biological decolorization process was determined. The reusability of the plant in long term repetitive operations confirmed the biological degradation process. The by-products formed during biodegradation process were identified by GC-MS technique. The effects of the dye on several plant physiological responses such as photosynthetic pigments content and antioxidant enzymes activity were investigated. The content of chlorophyll and carotenoids was significantly reduced at 20 mg/L of the dye. The activities of superoxide dismutase and peroxidase were remarkably increased in the plant root verifying their importance in plant tolerance to the dye contamination.
本研究旨在评估水生维管束植物豆瓣菜对酸性蓝92（AB92）的降解潜力。测定了初始染料浓度、植物生物量、pH值和温度等操作参数对生物脱色过程效率的影响。该植物在长期重复操作中的可重复使用性证实了生物降解过程。采用气相色谱-质谱联用（GC-MS）技术鉴定了生物降解过程中形成的副产物。研究了该染料对植物几种生理反应的影响，如光合色素含量和抗氧化酶活性。在染料浓度为20mg/L时，叶绿素和类胡萝卜素的含量显著降低。植物根系中超氧化物歧化酶和过氧化物酶的活性显著增加，证实了它们在植物耐受染料污染中的重要性。
