中药废水胁迫对菖蒲生理特性的影响

以活力、大小一致的菖蒲小植株为试材,在小型模拟人工湿地系统中,研究中药废水胁迫对菖蒲(Acorus calamus)生理生化特性的影响,为其在水体环境植物修复中的应用提供科学依据。结果表明,中药废水胁迫下,菖蒲叶绿素和脯氨酸含量显著下降,MDA和可溶性糖含量显著上升,根系活力先增后降;同时,菖蒲的SOD和CAT活性在中药废水胁迫下显著下降,而POD活性在高质量浓度胁迫下成倍增长。因而,菖蒲通过调节各种生理生化特性以增强对废水胁迫的抗逆力和耐受力,可作为人工湿地处理中药废水的备选植物之一。

Effects of Traditional Chinese Medicine Wastewater on Physiological Characters of Acorus calamus

Effects of traditional Chinese medicine wastewater treatment on the physiological and biochemical index (including chlorophyll, soluble sugar, TTC, Pro, MDA, SOD, POD and CAT) of Acorus calamus were investigated in simulated constructed wetlands using A.calamus plants with the same of activity and size. The results showed that under the stress of traditional Chinese medicine wastewater, the contents of chlorophyll and Pro decreased significantly in the leaves of Acorus calamus. Meanwhile, with the increasing concentration of medicine wastewater, the contents of MDA and soluble sugar increased significantly, and the activities of TTC firstly increased and then decreased. In addition, SOD and CAT reduced significantly under the stress of medicine wastewater, but the activity of POD increased significantly. Therefore, it can be concluded that Acorus calamus has good adaptability and pollution resistance ability to medicine wastewater by the adjustments of different physiological and biochemical index, and it is one of the elected plants in the treatments of traditional Chinese medicine wastewater in constructed wetlands.